catamaran gros plan

Gros Plan, Madagascar

• 8.5 Fabulous 3 Verified Reviews
• from ₽ 15,606 / day

Excellent crew and service “exchange of experience between the guests all dives corals, whale shark, sharks, turtle” Nathalie S, France

• Caters to just 8 guests
• World-class diving in Madagascar
• Visits Mitsio and Radama archipelagos

Experience world-class diving in Madagascar aboard the comfortable Gros Plan liveaboard. Catering to just 8 guests to offer more personalized service, the Gros Plan catamaran has 4 cozy cabins. Each has a double bed, reading lights, and an en-suite bathroom with a hot-water shower. Social areas include an indoor salon, outdoor terrace, dining area, and sunbathing areas around the boat. The onboard chef freshly prepares delicious cuisine.

The Gros Plan catamaran departs from Nosy Be, Madagascar, for sensational diving in the Indian Ocean. Itineraries are 6 days long and explore either the southern Radames archipelago or the northern Mitsio islands. Divers can get up close with leopard sharks, turtles, whale sharks, whales, Spanish dancers, stunning coral reefs, swim-throughs, and wrecks. The 4 crew onboard are on hand to ensure a smooth and relaxing trip.

Join the Gros Plan catamaran for a fantastic dive liveaboard in Madagascar. Book online today.

Choose your departure date

Included: VAT, Fuel Surcharge, Drinking Water, Soft drinks, Tea & Coffee, Welcome Cocktails, Full-Board Meal Plan (All meals), Snacks, Diving Package, Private Dive Guide, Land Excursions, Snorkel Gear, Snorkeling Guide, Cabin Towels, Complimentary Toiletries, Deck Towels.

Required Extras: Park, Port and Fuel Fees (60 EUR per trip).

Optional Extras: Gratuities, Airport Transfer (27 EUR per activity), Hotel Transfer (27 EUR per activity), Alcoholic Beverages, Wine with Dinner, Rental Gear (50 EUR per trip) .

Book now, pay later: You can easily place your booking online. We will then hold the spaces for you and you can confirm with a payment later.

* Extra fees are shown per person.

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Boat features

• Indoor Saloon
• Non-Diver (Snorkeler) Friendly
• Warm Water Showers
• Outdoor Dining
• Custom built for diving
• Non-Smoking Rooms
• Outside Showers
• Separate Rinse for u/w Camera
• Dedicated Local & International Crew
• Observation Deck
• Available for Charter

Food & Drinks

• Vegetarian Options
• Beer available
• Vegan Options
• Free Soft Drinks
• Wine Available
• Welcome Cocktails

If you have any specific dietary requirements whilst on-board your cruise, you can add this to your special requests on step 2 of the booking form. We advise limiting these requests to religious beliefs or food allergies.

• DIN Adaptors
• Tenders for diving
• Shaded Diving Area

The crew speaks English and French.

Gear Rental

There is diving gear available on this boat. Please provide your rental needs on the booking form. See below for further details on inclusions and pricing. Show prices .

Drawings & Vessel Layouts

Accommodation.

Double Cabins

Boat specifications.

• Year built 2015
• Length 45 feet
• Deck area 84M2
• Top speed 12 knots
• Cruising speed 8 knots
• Engines 2 x 40 CV
• Max guests 8
• Number of cabins 4
• Number of bathrooms 4
• Water capacity 2X150L
• Fuel capacity 600 L
• Freshwater maker yes

Boat Navigation and Safety

• Depth Sounder
• Radio VHF/DSC/SSB
• Emergency Rafts
• Fire Alarm & Fire Extinguishers
• First Aid Kits
• Satellite & mobile phones
• Search light
• Crew trained in first aid
• Emergency flares

Gros Plan Reviews

• 8.5 Fabulous
• 3 Verified Reviews
• 8.4 Very good

wonderful. Magic

exchange of experience between the guests all dives corals, whale shark, sharks, turtle

• 8.8 Fabulous

Very good diving trip

Sharks and turtles

Tauchsafari auf dem Katamaran

Eine abwechslungsreiche Tour mit ca. 2 Tauchgänge pro Tag, möglichkeit zum Schnorcheln und Landgänge auf einsamen Inseln. Besonders die maximal Belegung von 8 Personen und die kleine Crew von 4 Personen sorgt für eine familiäre Stimmumg. Es ist von Vorteil gute Französischkenntnisse zu haben.

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There is diving gear available on this boat. Please provide your rental needs on the booking form. See below for further details on inclusions and pricing.

• Full Equipment (with: BCD, Dive Computer, Dive Light, Fins, Mask, Regulator, SMB, Snorkel Gear, Wetsuit) 50 EUR per week

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• 1 double bed
• No fan or aircon
• Shared Bathroom
• Max 2 guests

Each cabin is equipped with bathroom and WC, as well as hot water.

Rental Gear Prices

Enquiry - charters and groups.

Catamaran Gros Plan

• Croisière plongée

Si vous souhaitez connaitre le prix de ce produit merci de nous contacter

Croisière plongée 7 nuits

Le Gros Plan est un catamaran de 15 m aménagé pour la plongée sous-marine. Il vous permettra d’explorer les archipels des îles Mitsio et des Radames sur des itinéraires de 6 jours et 5 nuits.

Le catamaran Gros Plan est un bateau construit par les chantiers Beneteau en France. Il accueille 8 passagers dans 4 cabines doubles. Toutes les cabines disposent d’un lit double, de rangement, et d’une salle de bains privée.

Vous prendrez vos repas, soit dans le grand carré central à l’intérieur, soit dans le salon extérieur. Vous pourrez profiter de moments de détente au soleil sur les matelas posés sur le trampoline à l’avant.

Activités et services

Tous les repas sont inclus et préparés avec soin par le cuisinier à bord. L’eau minérale est à volonté et un apéritif au coucher de soleil est offert tous les soirs. Les boissons alcoolisées sont en supplément.

L’équipage comprend 1 instructeur de plongée, 1 skipper, 1 marin et 1 cuisinier.

Le bateau dispose d’un kit médical de secours, mais il est fortement recommandé de prévoir vos propres médicaments (mal de mer, maux de tête etc…). Il est conseillé d’apporter des vêtements légers, avec toutefois un vêtement plus chaud pour les soirées, chapeau ou casquette et de la crème solaire.

Le programme comprend 10 plongées sur la durée de la croisière. Vous ferez aussi de nombreuses escales afin d’apprécier les merveilles de chaque île. Du matériel de plongée est disponible à la location.

Les croisières sont accessibles à tous les niveaux de plongée et aussi aux snorkeleurs.

Le programme alterne entre les croisières aux Îles Mitsio ou aux Îles Radames.

Croisière Iles Mitsio

Une croisière plongée dans les Mitsio vous permettra de combiner toutes les îles et de plonger sur des sites plus éloignés comme Nosy Lava. L’isolement de ces 5 îles leur confère une authenticité et une préservation sans pareil. Les récifs sont en excellente santé, avec beaucoup de coraux durs et de coraux mous, et de belles tables d’acropora. La faune est très présente partout.

Galerie photos

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Plus d’informations

Le catamaran Gros Plan vous fera découvrir les plus beaux sites de Madagascar au cours d’une croisière de 6 jours et 5 nuits. Les Mitsio offrent aux plongeurs de tout niveau un cadre idéal en raison de la diversité de leurs fonds marins. Les profondeurs varient de 2 m (idéal pour le snorkeling) à 35 m. Vous plongerez la plupart du temps entre 5 et 15 m. Vous pourrez observer une grande variété de coraux, y compris d’étonnantes gorgones géantes. Les récifs sont très poissonneux et vous aurez la chance de croiser des bancs de barracudas, carangues, raies manta, et pour les plus chanceux, le requin-baleine.

Le Gros Plan ne suit pas un itinéraire fixe jour par jour. Le capitaine décide de l’itinéraire et des plongées en fonction des conditions météorologiques et de navigation. Le bateau part et revient depuis la plage d’Ambatoloaka.

La croisière est accessible à tous les niveaux de plongée ainsi qu’aux snorkeleurs.

Premier jour : L’équipe vous accueillera au centre de plongée avant de monter à bord du Gros Plan. L’embarquement se fait vers 14 h 00 sur la plage d’Ambatoloaka. Une fois installé dans vos cabines, le bateau mettra les voiles pour rejoindre le premier mouillage. Vous pourrez apprécier un cocktail de bienvenue en admirant un magnifique coucher de soleil.

Jours suivants : Vous ferez 2 plongées par jour, soit une le matin et une l’après-midi, soit deux le matin. En fin d'après-midi, le bateau mouillera dans la baie protégée d’une île au large. Il sera possible de descendre à terre. Les repas sont pris à bord et sont préparés par le cuisinier. Au menu, poissons pêchés pendant la croisière, crevettes, crabes, zébu et même du sanglier selon les arrivages.

Voici quelques sites de plongée que vous aurez l’occasion de découvrir pendant votre croisière : Vous naviguerez autour des îles de Nosy Lava, d’Ankarea, de Tsarabajina, de Ratapenjiky et de Sakatia.

Les Tétons , site coloré et très poissonneux, avec une profondeur de 5 à 20 m, comprend 2 pitons rocheux émergeant. L’architecture est très intéressante avec des arches et grottes abritant des balistes bleues, des gaterins, des poissons-hachettes. Vous aurez l’occasion de découvrir les incroyables orgues basaltiques lors de votre plongée sur le site de La Casquette (Betalinjona). C’est un rocher en forme de casquette surgissant de la surface et abritant de nombreux oiseaux. Sa partie immergée atteint les 20 m et les fonds sont recouverts de coraux mous où les hippocampes se cachent.

Les 4 Frères Au fur et à mesure que l’on monte au Nord vers les Mitsio, on aperçoit d’abord les 4 Frères puis, tout près, deux roches qui émergent de 2 à 5 m suivant la marée. Sous la surface, elles se poursuivent jusqu’à 15 ou 20 m suivant les endroits. Les murs sont couverts d’une très grande variété de coraux abritant une multitude de crevettes nettoyeuses, et de nombreuses murènes rubans. Les poissons-hachettes se regroupent en masse dans les failles et crevasses des tombants. Les pélagiques fréquentent les lieux, vous pourrez apprécier les passages de barracudas, raies mobula, requins pointes blanches. 2 plongées seront réalisées sur le site accessible à tout niveau avec des mises à l’eau différentes à chaque fois.

L’île d’Ankarea abrite une magnifique baie et les fonds marins offrent un beau spectacle aux plongeurs. Vous plongerez sur un plateau corallien entre 12 et 25 m où les bancs de fusiliers, les poissons-licornes, les tortues, les thazards, les carangues, les requins pointes blanches et les gris ont élu domicile. Ankarea est une plongée où l’on admire le corail noir le long du tombant. Dans le mur, vous trouverez de nombreuses crevasses où les crabes et les langoustes se cachent. Des rencontres inoubliables peuvent avoir lieu sur ce site avec des requins-baleines ou des baleines à bosse, sans oublier les raies manta. Ici aussi, vous effectuerez 2 plongées et explorerez à chaque fois une partie différente du récif.

Le Petit Castor est un site avec une profondeur de 9 à 60 m, on plonge sur des hauts-fonds sous forme de dôme d'un diamètre de 500 m. Il y a tellement à voir sur ce site que 2 plongées seront faites. En profondeur, on trouve des crevasses et cavités dans la roche couverte de gorgones géantes. Ce récif est peu fréquenté malgré ses fonds marins exceptionnels et ses magnifiques coraux. Les pélagiques, carangues, thons, passent le long du tombant. On y rencontre régulièrement des requins pointes blanches, des gris de récif et requins-baleines durant les mois d’octobre et novembre.

Banc intermédiaire est un haut-fond situé à mi-chemin entre Nosy Be et l’archipel des Mitsio. On y plonge sur le trajet retour à Nosy Be. Le dessus du plateau corallien est à 18 m et le tombant atteint les 60 m. Au cours de cette plongée dérivante, vous découvrirez des tortues se nourrissant de patates de corail et d’éponges, des poissons-perroquets, des mérous, des langoustes, du requin gris juvénile.

Vous aurez l’occasion de découvrir la forêt de baobabs de Nosy Ankarea et de vous balader le long de la magnifique plage de sable blanc lors d’une escale dans la baie.

Dernier jour : Après les 2 dernières plongées, vous débarquerez sur la plage d'Ambatoloaka vers 15 h 00.

Croisière non privative. Départ garanti avec minimum 4 personnes. Maximum 8 personnes à bord. Départ le samedi vers 14 h 00 et retour le jeudi vers 15 h 00.

Croisière Iles Radames

L’archipel des Radames comprend 4 îles : Nosy Kalakajoro, Nosy Ovy, Nosy Antany Mora et Nosy Valhia. Cet archipel paradisiaque se découvre idéalement en croisière. Vous aurez l’occasion de plonger sur de magnifiques sites avec une superbe architecture sous-marine et une incroyable faune.

À bord du Gros Plan , vous aurez l’occasion de découvrir les magnifiques sites autour de l’archipel au cours d’une croisière de 6 jours et 5 nuits. Vous effectuerez 10 plongées plus une de nuit si vous le souhaitez. Tous les sites sont concentrés sur le canal du Mozambique, à environ 3 minutes des îles. Ce sont principalement des tombants où la profondeur varie entre 12 et 80 m. Le spectacle est impressionnant et vertigineux grâce aux gorgones géantes, grottes et crevasses. Rencontres régulières avec des bancs de thons, barracudas et carangues, requins pointes blanches, loches géantes, parfois requins-marteaux, etc.

Voici quelques sites de plongée que vous aurez l’occasion de découvrir pendant votre croisière :

Le Pain de sucre est une toute petite île en forme de dôme et son point culminant est à 30 m. Étant inhabitée, beaucoup d’oiseaux endémiques de la région y ont élu domicile. La base immergée de ce gros rocher est à 20 m de fond. La zone est très poissonneuse et abrite la langouste porcelaine.

Les sites de Nosy Iranja : Un grand tombant, qui marque la fin du platier continental et parallèle à la côte de Madagascar, passe juste derrière Nosy Iranja à environ 1 mille nautique. Au Sud de l’île à environ 2 ou 3 milles, on trouve une grande faille sous-marine de 3 ou 4 kilomètres de long. La majorité des sites de plongée se trouvent sur ces 2 endroits. Banc Gege est un très joli tombant sur la face Nord de Nosy Iranja dans les 20 m de profondeur. Il faut être attentif pendant la plongée, car il est commun d’entendre les dauphins et le chant des baleines à bosse en saison. Sur le dessus du mur, vous trouverez un joli plateau corallien habité par les tortues. Roche Gaby : Le long de la faille, il est possible de faire une plongée profonde. Vous observerez de grandes gorgones et du corail de feu. Ce site est très poissonneux avec beaucoup de requins, des bancs de raies mobula et de vivaneaux, des mérous et des murènes. Le tombant Sud Canyon est un plateau en forme de main. Les espaces entre chaque doigt créent un canyon. Le haut du plateau est à 17 m et le fond à 24 m. La faune est intense et les rencontres sont nombreuses. Vous trouverez des perroquets à bosse, des bancs de barracudas et de thazards, des gros mérous, et si vous êtes chanceux des raies aigles, des requins léopards et gris. Tombant black se situe à la limite du plateau continental au large de Nosy Kalakajoro. Vous effectuerez une plongée dérivante et trouverez des passages ouverts dans la roche remontant vers le plateau abritant une large faune et flore, créant un véritable garde-manger pour les pélagiques. Tombant Kalakajoro a une architecture très intéressante, plusieurs plateformes sont posées sur le plateau principal à 20 m de fond. Le tombant joint les 40 m et tout le long du mur vous pourrez observer les crevasses où sont nichées les langoustes. Dans le bleu, il est commun d’apercevoir le passage de pélagiques. Tombant Ouest Iranja est un large plateau de corail très poissonneux abritant des requins et autres pélagiques, ainsi que beaucoup de fusiliers et de raies.

Les sites des Radames : Cet archipel paradisiaque n’est accessible qu’en croisière. Les sites sont nombreux et certains offrent une superbe architecture sous-marine.

La Nurserie est un site qui se trouve face à l’île de Nosy Antany Mora. C’est un joli plateau dans les 20 m, recouvert de coraux et d’éponges. Au bout du plateau, vous trouvez un mur en pente douce joignant les 35 m. Le lieu abrite une grande variété de poissons, carangues bleues, thazards, bonites, mérous, perroquets à bosse, requins gris, raies pastenagues. Greg Wall est le site incontournable de la région. C’est un superbe tombant recouvert de corail et de gorgones. Le haut du mur se trouve à 15 m et descend à pic à 65 m. Vous pourrez emprunter un long tunnel creusé dans la roche. Face à ce mur, se trouve un imposant pinacle de 40 m de haut avec une large grotte. L’endroit est peuplé d’une multitude de poissons colorés, de larges bancs de lutjans et de platax. Le Banc du Cyclone , plus au Sud, est une belle plongée où l’on observe des pélagiques, des mérous, des thons, etc. C’est un tombant à la forme très découpée, percé de petites arches et fleuri de gorgones entre 18 à 35 m de profondeur. De grands bancs de fusiliers y circulent pendant l’hiver austral. On peut y voir aussi quelques requins pointes blanches de corail ainsi que des requins-léopards, des raies manta et des requins-baleines (octobre-novembre). Le site 3 roches présente une architecture très particulière. Comme son nom l’indique, vous évoluerez entre 3 gros pinacles tout au long de votre plongée entre 40 et 20 m. De nombreux pélagiques arpentent la zone, tels que les raies manta, les requins gris, les requins pointes blanches. Le récif est recouvert de belles gorgones, de coraux et d’éponges. La marche est une succession de mini-tombants commençant dans les 15 m et atteignant les 60 m. La zone est peuplée de thazards, de thons, de carangues, de napoléons, de tortues. Au détour d’une grosse éponge barrique, vous rencontrerez peut-être le requin-léopard chassant les crustacés.

Vous aurez l’occasion de faire escale et de visiter l’île de Nosy Iranja. Vous irez à la rencontre des habitants du village de pêcheurs d’Antany Mora. Le bateau mouillera à l’embouchure de la rivière de Baramahmay. Elle offre un complexe de mangroves abritant une faune exceptionnelle. Un après-midi sera dédié à sa visite.

Départ garanti avec minimum 4 personnes. Maximum 8 personnes à bord. Départ le samedi vers 14 h 00 et retour le jeudi vers 15 h 00.

Hébergement

Hôtel Gérard et Francine

Hôtel 2* - Nosy Be - Madagascar

Dans le village d’Ambatoloaka, à 30 minutes de l'aéroport, ce petit hôtel de charme à l’ambiance familiale est implanté dans un beau jardin tropical au bout de la grande plage. L’hôtel Gérard et Francine invite à la détente, les propriétaires sont aux petits soins avec leurs hôtes. Il est blotti contre la falaise verdoyante du cratère et fait face au lagon de Nosy Be.

Voir la carte

L’hôtel Gérard et Francine est directement sur la plage d’Ambatoloaka, à la fois proche du village et loin de l’agitation. Vous pourrez ainsi découvrir en toute quiétude ce petit village sympathique et accueillant, et découvrir l’artisanat local. L’hôtel Gérard et Francine dispose de 9 chambres, toutes décorées avec l’artisanat malgache et construites avec des matériaux locaux. Tout le mobilier est fabriqué à l’hôtel ou sur l’île de Nosy Be. Les chambres sont équipées de ventilateurs, d’un coffre-fort individuel, d’un minibar, d’une salle de bains privative avec eau chaude solaire. Toutes sont équipées de moustiquaires aux portes et aux fenêtres. 7 chambres sont dans le Bungalow et la Grande Maison avec Véranda, une chambre se trouve dans la Grande maison avec une salle de douche mais des toilettes communes. Une autre chambre se trouve dans la Grande maison, mais n’a pas la vue mer. La maison est construite selon l’architecture malgache et créole avec une large varangue qui invite au farniente et qui permet de garder la fraîcheur à l’intérieur.

Il n’y a pas de restaurant à l’hôtel, uniquement un service de petit-déjeuner. Ce copieux petit-déjeuner est constitué de café et thé, de fruits frais, d’une pâtisserie maison et d’une omelette. Tout autour de l’hôtel, des petits restaurants typiques vous attendent pour vous faire déguster des spécialités malgaches. Le soir, le bar lounge, est l’endroit préféré des clients. Au milieu des senteurs et des jardins, on vous servira des cocktails maison délicieux.

L’activité principale de l’hôtel c’est la superbe plage et le lagon à proximité, et l’observation des oiseaux et des lémuriens dans le jardin. L’équipe se fera un plaisir de vous organiser des excursions dans l’île et tout autour, comme des sorties pêche ou la découverte d’une réserve de lémuriens.

Le Wi-Fi est gratuit ainsi que l’assistance pour la reconfirmation de vos billets d’avion. L’hôtel dispose d’un service de blanchisserie.

Snorkeling et plongée

Le snorkeling est possible devant l’hôtel. Vous pourrez admirer de superbes patates de corail, pleines de vie.

Le prix comprend : - le vol Paris/Nosy Be aller et retour avec Air Austral via La Réunion en classe économique, - les transferts aéroport-hôtel aller et retour, - 2 nuits avec petit-déjeuner à l'hôtel Gérard et Francine, - 5 nuits de croisière sur le catamaran Gros Plan, - un forfait de 10 plongées , - les bouteilles et les plombs, - les taxes aéroport et surcharges carburant (sous réserve de modifications). Attention : Les prix sont basés sur les tarifs aériens les moins chers. Selon les disponibilités, nous serons peut-être amenés à vous proposer une solution avec un supplément. Le prix ne comprend pas : - les pourboires.

Avis clients

Madagascar - Date de départ 06/10/2023

Croisière plongée : Oceane's Dream - Mitsio - Gros Plan Séjour Nosy Be : Jardin Vanille - Plongée : Nosy Komba Plongée

Madagascar est une destination pleine d'intérêt et de surprises (bonnes), tout s'est très bien passé et nous avons vu tout ce qui était annoncé et au delà

Le + : plongées magnifiques, iles et plages aussi

Le - : rien

Madagascar - Date de départ 07/10/2023

Gros Plan : Une révision plomberie ferait du bien au Gros Plan. L'équipage aux petits soins, au top !

Madagascar est une ile à découvrir avec des plongées magnifiques à réaliser : couleurs, coraux, et belles rencontres assurées ! Gros Plan : Accueil très cordial. Bateau à mon sens petit pour 8 personnes. Cela s' est très bien passé car on se connaissait tous. Equipage parfait et qualité du cuisinier Ahmed à souligner !

Le + : Les plongées sur Nosy Komba dans la réserve. La disponibilité de l' équipage et leurs réponses à notre attente ( mise à l' eau avec les dauphins par exemple)

Le - : Certaines plongées d' un niveau moins intéressant.

Je suis vraiment en confiance avec Ultramarina, ils se sont occupés de tout et je n’avais qu'à profiter de mes vacances ???? Gros Plan : Manque une bonne révision du bateau ; Une salle de bain pour l’équipage ; Un tabouret pour la table extérieur ; Cuisinier exceptionnel Jardin Vanille : Accueil chaleureux ; Cadre idyllique ; Prestation haut de gamme

Le + : Très dur à dire : Le dépaysement ; la population; les paysages; les plongées; la faune et la flore

Le - : Les moustiques ????

Madagascar - Date de départ 18/10/2019

Séjour Nosy Be : L'Heure bleue - Plongée Tropical Diving Croisière plongée : Oceane's Dream - Mitsio Séjour Nosy Be : Jardin Vanille - Plongée : Nosy Komba Plongée

Briefing sur la securite a board incomplet, pharmacie de board à completer

Le + : La liberté qu'on ma laisse pour les plongées que ce soit en sorties journalières ou en croisiere

Le - : L'inconstance des règles aux contrôles de sécurité aéroportuaire

Madagascar - Date de départ 02/10/2019

Séjour Nosy Be : Hôtel Gérard et Francine Croisière plongée : Oceane's Dream - Mitsio Séjour Nosy Be : L'Heure bleue - Plongée Tropical Diving

Je recommanderai mais avec réserves pour Ocean’s Dream en raison du manque d’eau douce. L’Heure Bleue est un bon Hôtel à conseiller. Hôtel Gérard et Francine : Correct mais sans plus. Staff agréable. Cela compense la patronne qui ne sait dire ni bonjour ni au revoir. Oceane's Dream : Staff très bien et sympathique Cuisine très bonne Plongée correcte mais j’ai vu mieux. Il manque un desalinisateur. Nous avons passé 6 jours à l’eau de mer diluée... cela aurait dû être précisé. L'Heure bleue : Excellent tant au niveau service que situation. Bonne cuisine. Tropical Diving : Connaît bien les sites. Un couac au RV du premier jour. Chose curieuse, ils remontent sans parachute en signalant de faire attention aux bateaux.....

Le + : Les plongées des 3 derniers jours. L’Heure Bleue La gentillesse de tous les salariés quel que soit le prestataire.

Le - : Le manque d’eau douce sur le bateau.

Madagascar - Date de départ 17/04/2019

Séjour Nosy Be : Ecolodge Le Grand Bleu - Plongée Sakalav' Diving Croisière plongée : Oceane's Dream - Mitsio

Le bateau n'est pas vraiment fait pour la plongée ! heureusement que nous n'étions que 4 sur 8 possibles... On ne sais pas où nous aurions mis toutes nos affaires.

Le - : Les porteurs dans les ports qui nous arrachaient presque les valises !

Madagascar - Date de départ 28/11/2018

Séjour Nosy Be : Hôtel Gérard et Francine Croisière plongée : Oceane's Dream - Mitsio

Oceane's Dream : Très beau bateau, spacieux, propre et bien entretenu. Equipe locale compétente et très sympathique. Accueil personnalisé et vie sur le bateau en petit comité Hôtel Gérard et Francine : Disponibilité au top, personnel aux petits soins, souriant, agréable et toujours prêt à rendre service. Le tout dans un petit coin de verdure très appréciable et reposant, dans le respect de l'environnement, protégé des effets du tourisme de masse. je recommande chaudement !

Le + : la sérénité de l’hôtel Gérard et Francine La vie sur un bateau à voile, en petit comité (3 touristes pour 4 personnels), isolé avec des vues à couper le souffle Les sites de plongées pour nous tout seuls ! Le beau temps, très peu de pluie (ou uniquement en soirée/nuit)

Le - : Plongées sur les Radames avec souvent une visibilité moindre. Peu de "gros" observé malgré la saison, la qualité et la beauté des sites. Mais la mer n'étant pas un zoo, les plongées n'ont pas été gâchées pour autant.

Madagascar - Date de départ 14/11/2018

Séjour Nosy Be : Hôtel Gérard et Francine Croisière plongée : Oceane's Dream - Radames Extension séjour "Aux Alentours de Nosy Be"

Oceane's Dream : Une tres belle croisiere. Il serait préférable de disposer d’oxygène à bord du catamaran en cas d'ADD plutôt que de nitrox! Hôtel Gérard et Francine : Un petit coin de paradis paisible à l'écart de la ville! jardin vanille : Superbe écolodge dans un endroit magique. la bouteille d'eau/rafraîchissement aurait été bienvenue à l'arrivée. Une tres bonne table. Super excursion avec l'équipe de Nestor à la découverte de la flore et faune de l'ile.

Le + : nager avec un requin baleine

Le - : cette ville côtière de Nosy Be est un haut lieu du tourisme sexuel... choqaunt!!

Madagascar - Date de départ 16/08/2018

Croisière Plongée : Oceane's Dream - Radames - Belize 43 Séjour NOsy Be : Hôtel Gérard et Francine - Plongée Oceane's Dream Séjour Sainte Marie : Princess Bora Lodge & Spa - Plongée : Bora Dive and Research

Croisière Oceane's Dream : Beaucoup d'humidité dans le lit. Petits déjeuner très léger (biscote). Juste assez de nourriture, mais bon. Pas de gros poisson en plongée, rare requin, raie et tortue Hôtel Gérard et Francine : C'est vraiment très bien et orienté Eco Lodge Princess Bora Lodge & Spa : Hôtel magnifique, accueil top et repas excellents. Ambiance, bars difficile de faire mieux Bora Dive and Research : Peut faire mieux sur les sites de plongées. Visibilité très moyenne Baleines top ! Pas de gros poisson en plongée, pas de requin, raie et tortue

Le + : Princess Bora Lodge et les baleines

Le - : Lit du catamaran

Madagascar - Date de départ 13/06/2018

Croisière Plongée : Oceane's Dream - Radames - Belize 43 Séjour NOsy Be : Hôtel Gérard et Franine - Plongée Oceane's Dream

très bonne organisation

Le + : visites et plongées au cours de la croisière

Le - : la profondeur des plateaux coraliens

Madagascar - Date de départ 20/11/2017

Séjour Nosy be : Nosy Lodge - Plongée Oceane's Dream Croisière Plongée : Oceane's Dream - Radames - Belize 43 Séjour NOsy Be : Hôtel Gérard et Franine - Plongée Oceane's Dream

Nosy Lodge : Hotel tres bruyant, pratique le tourisme sexuel. Nous avons eu 2 chambres sur"jardin" qui et en fait sur rue.chambres très spartiates.pour la première sans rangement ni mobilier.nous avons donné a l'hotelier ces commentaires de vive voix. Celui-ci nous à confirmé que nous n'étions pas dans la meilleure des chambre et qu'elle correspondait à notre budget.ce qui nous a fortement étonné.

Le + : La croisière malgré ces aléas liés à la nourriture, le teck sur Noisy lombard et le séjour chez Gérard et Francine

Le - : Séjour à Nosy lodge

Madagascar - Date de départ 18/08/2017

Croisière plongée : Oceane's Dream - Radames

Le + : Belles plongées avec Baleines et baleineaux. Bonne ambiance sur le bateau. Responsable plongées sympa et compétent.

Le - : Salle de bain sur le bateau un peu juste. Le hublot de la cabine donne sur le pont,a la vertical du lit . Il y a mieux pour l'intimité.

Madagascar - Date de départ 05/04/2017

Croisière plongée : Oceane's Dream - Mitsio Séjour Nosy Be : Gérard et Francine - Plongée Oceane's Dream

Oceane's Dream : Club convivial avec un réel sens de l'accueil. Toujours disponible pour faire de notre séjour le plus adaptée à nos attentes qu'elles soient axées sur la plongée ou d'autres activités.

Le + : l'authenticité et l'exclusivité des spots où nous étions seuls. C'est un réel privilège sur des sites encore sauvages.

Le - : Nous étions toutes les deux seules sur le Catamaran qui pouvait aller jusqu'à 8 plongeurs. Peut être un autre binôme aurait animé davantage notre croisière.

Madagascar - Date de départ 15/10/2016

Croisière plongée : Oceane's Dream - Mitsio

Même si le voyage s'est bien déroulé dans l'ensemble et que les poissons ont égaillé notre croisière, il est clair que le club de plongée n'était pas en capacité de gérer 2 bateaux. Malheureusement, c'est notre bateau qui a été sacrifié. Au final la prestation est bien en dessous de ce qui nous a été vendue.

Le + : Les plongées et le fin de sejour à terre.

Le - : Manque de sécurité pour les plongées. Manque de nourriture. Bateau non adapté à la plongée.

Madagascar - Date de départ 10/10/2015

Croisière plongée : Oceane's Dream

Des moments magiques, plongée avec un requin baleine

Le + : les plongées et la croisière seuls sans autres touristes, la variété des sites, le carpaccio fraichement péché Et la cerise: plongée 1h10 avec un requin baleine !

Le - : 2 plongées par jour le matin, pourquoi pas une 3ème l'après midi?

Madagascar - Date de départ 05/05/2015

Croisière plongée : Oceane's Dream Séjour Nosy Be : Hôtel Gérard et Francine - Plongée : Tropical Diving

à part la compagnie aérienne air Madagascar catastrophique ,le voyage c'est bien déroulé ,les guides sont compétents et très sympathiques ,les hôtel correctes ,les prestations sur le bateau sont à la hauteur ,après c'est de la chance ou pas de voir pleins de poissons et d'avoir des conditions de temps idéales.

Le + : l'ensemble des préstations

Le - : le voyage

Madagascar - Date de départ 20/09/2014

Séjour : Constance Tsarabanjina - Plongée : Akios diving Croisière plongée : Oceane's Dream

Croisière Oceane's Dream 6/10 : Bateau bien trop petit pour 8 plongeurs+skipper et 3 marins. Heureusement que le temps était beau car le carré intérieur aurait été inaccessible.Le cockpit (extérieur) ne reçoit pas 9 personnes(8clients+skipper) à table...Le matériel de plongée est disposé tant bien que mal est reste d'accès difficile et parfois risqué. Pas de rangement , salle de bains de 1 m2 maxi... Personnel et skipper irréprochables.

Le + : Le calme, absence de nuisances sonores, pas de musique inutile ou trop forte. L'exposition et la position du bungalow.Le mini bar toujours bien approvisionné.La qualité et la fraicheur des produits utilisés en cuisine (poissons ,légumes absolument délicieux,et même un foie frais parfaitement préparé!..)

Le - : Le relief de l'île fait que l'accès au bar -restaurant comporte de nombreuses marches à gravir +sieurs fois par jour, on s'y fait mais c'est un peu fatiguant. Heureusement un accès de la plage sud, par les rochers était souvent possible. Accessoirement, l'aéroport de Nosy Bé que nous connaissions déjà n'a pas évolué.La police et autres préposés ont toujours le culot de réclamer des pourboires et font ouvrir les bagages à de multiples reprises sans d'ailleurs y regarder à tel point que Air Austral procède in fine à un contrôle de bagage et au corps sur la piste avant de monter dans l'avion.Je pense que pour cette dernière raison je vais éviter MADA. un bon moment car ces gens font du mal à leur peuple et à leur pourtant magnifique pays.

Madagascar - Date de départ 01/05/2014

Croisière plongée : Oceane's dream Circuit : Circuit 6j/5n Nord Oceane Aventures

Circuit Nord très dépaysant, de multiples paysages différents, une population très gentille et avenante malgré la pauvreté apparente. Croisière Oceane's dream 7/10 : Catamaran petit avec des cabines très petites. Pas de matériel de plongée de secours si détérioration en cours de croisière. Cuisinier à bord remarquable. Circuit Oceane Aventures 10/10 : Guide très disponible, connaissant bien son pays et excellent conducteur sur les pistes et routes très endommagées.

Le + : Les randonnées dans les parcs naturels.

Le - : les deux soirées passées à Nosy Be sur terre (Ambatoloaka), tourisme sexuelle exposé à la vue de tous. nous ne sommes pas allés diner le second soir à cause de ce spectacle affligeant.

Disponibilités

We like to highlight

• Accommodates up to 8 guests in 4 cabins
• Dive trips in Madagascar to the Southern Radames Archipelago & the Northern Mitsio Islands
• 5 night itineraries are available
• Crew that speaks English and French

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• DIN Adaptors
• Nitrox available
• Tenders for diving

Languages Spoken

Boat amenities, boat facilities.

• Air Conditioned saloon
• Aircon Cabins
• Indoor Saloon
• Non-Diver (Snorkeler) Friendly
• Warm Water Showers
• Outdoor Dining
• Custom built for diving

Onboard payments

Food and drink.

• Vegetarian Options
• Beer available
• Vegan Options

If you have specific diet requests you can add this to your special requests on step 2 of the booking form. We advise limiting these requests to religious beliefs or food allergies. The liveaboard serves great food and you will be hungry after a full day of diving!

Accommodation

Double Cabins

Vessel Layout

Fine Prints

Booking process.

Select a dive itinerary that suits your date preferencs and a cabin of your choice and enter your personal information. Submit the booking request. Once the booking is processed, you will receive an email notification with all booking details conveniently laid out in PDF.

Payment and cancellation

• More than 60 days out = 100 % refund
• Between 30 and 60 days out = 70 % refund
• Less than 30 days out = no refund

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Cabin details

• No Fan or Aircon
• Max 2 guests

Diving facilities

Boat description

Food and Drink availability

Gear rental.

Gear Rental

Rental gear prices.

There is diving gear available to rent on this boat. Please provide your rental needs on the booking form. You will need to pay for the rental gear on board of the boat.

• Full Equipment (with: BCD, Dive Computer, Dive Light, Fins, Mask, Regulator, SMB, Snorkel Gear, Wetsuit) 50 EUR per week
• 25% of the total booking amount is due at the time of booking and 75% (balance) is due 70 days prior to arrival.
• 100% cancellation fee of contracted room rate for cancellation received 60 days or less prior to date of arrival.
• 100% cancellation fee of contracted room rate for cancellation received 45 days or less prior to date of arrival.
• 100% cancellation fee of contracted room rate for cancellation received 30 days or less prior to date of arrival.

EXPLORE THE BEST CATAMARAN CRUISES IN THE NOSY BE ISLANDS

Sail with SESAME and uncover the hidden gems of Madagascar’s Northwest region.

Dreaming of exceptional underwater vistas, pristine white beaches, radiant sunsets, and an ever-present embrace of nature?

Embark on a 16-meter catamaran and live an extraordinary adventure in one of the world’s most beautifully preserved areas.

Embark on a journey around Nosy Be, where every adventure, both on sea and land, is included in your initial package, ensuring your trip is filled with activities to remember.

observation

Gift yourself a unique stay among the islands of Nosy Be aboard a spacious and comfortable catamaran.

Sea turtles, multicolored fish inhabiting coral reefs, dolphin ballets, or whale encounters.

Don’t wait to indulge - book your cruise now .

If you're keen and depending on our location during your cruise, you have the opportunity to observe the underwater world and the wonders it shelters!

We work closely with dive clubs based in Nosy Be, made up of highly qualified and passionate divemasters, committed to protecting the Malagasy environment.

Feel free to ask for more information when making your reservation.

Top Destinations

Your eyes will be glued to the stunning landscapes unfolding before you on our cruises.

From idyllic tropical islands to heavenly waterfalls in the midst of the untouched wilderness, each destination offers a sensory feast that guarantees you’ll depart with a heart full of satisfaction!

Click to explore articles penned by the tourist office.

Over 75 5⭐ reviews!

Don't just take our word for it! Check out testimonials from customers around the world on our TripAdvisor page and our Google Business page.

Cécile C.

Nous avons passé plusieurs jours à bord avec Hervé et son équipage. Des paysages splendides, personnel adorable [...].

I had one of the most unforgettable moment on this boat. You can feel that the team is there for you [...].

Riantsoa R.

One of my best experiences on a boat !! Amazing crew, and the food was out of this world !!

Francisco S.

Hemos tenido la fortuna de pasar seis días inolvidables en el Sesame, gracias a una tripulación excelente y a un barco grande [...].

Valérie L.

Belle croisière inoubliable, un accueil chaleureux du capitaine Hervé et son équipage. [...]

Thorsten H.

Wir hatten das Glück, die atemberaubenden Inseln im Süden von Nosy Be zu erkunden, und die Erfahrung war schlichtweg fantastisch.

Our Itineraries

Find your perfect journey with cruises ranging from 3 to 10 days.

From exploring the wonders of Nosy Hara Marine National Park to unveiling the history of Nosy Lava, once home to an old Malagasy penal colony, we'll guide you through the marvels hidden within these 300km of coastline.

Plus, we're more than happy to tailor any itinerary to match your preferences – here are a few examples.

From 3 to 5 days

From 5 to 7 days

From 7 to 10 days

Finding it hard to commit without a sneak peek of what awaits you? We understand.

Here’s a little taste of our cruises in pictures just for you.

WHAT IS THE BEST TIME TO SAIL IN NOSY BE ?

While the weather is suitable all year round (except for the cyclone season from January to March), the best time is from early April to the end of October.

CAN WE TRAVEL WITH YOUNG CHILDREN ?

Absolutely! Life on board is gentle and the sailing smooth. However, supervising children and wearing armbands (not provided) is mandatory on deck. Also, remember to bring some toys.

HOW LONG DOES IT TAKE TO VISIT THE ISLANDS AROUND NOSY BE ?

Ideally, plan at least 4 days to have time to reach the different archipelagos. Allow 10 to 15 days for a more in-depth visit.

DO YOU ACCOMMODATE YOUR CLIENTS' DIETARY REQUIREMENTS ?

Dietary requirements are respected as far as the available food in local stores allows.

WHAT EXPENSES SHOULD BE ANTICIPATED IN ADDITION TO THE CRUISE PRICE ?

Everything is included on board except for spirits and sparkling wines.

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MIKE WALLER 

Yacht design.

WE SPECIALIZE IN BOAT PLANS FOR AMATEUR BUILDERS

We provide stock boat plans for both monohull and multihull sailing vessels, including sailing skiffs and sharpies. Our designs mainly feature timber construction, in plywood or cedar strip plank composite construction, using the W.E.S.T. system (wood epoxy saturation technique). Our designs are intended mainly as cruising boats, although several have done well in racing. All designs are suitable for amateur boat builders.

 MONOHULLS

 multihulls  , photos from our builders.

Photo galleries are provided on each design page where available

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DIY Cruising Catamaran: Complete Building Guide

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A brand-new cruising catamaran can set you back a hefty amount of money. However, a DIY cruising catamaran provides a more affordable way to own your own boat. While building a large boat can be an extremely challenging and time-consuming experience, nothing beats the pleasure of bringing your own boat to life. 

To build a DIY cruising catamaran, buy good design plans, determine your budget and find a working space. Next, choose your hull material, buy supplies and start building the mast beam. Build and sheathe the hull, install bulkheads, the interior, and finally, launch the catamaran boat.

In this article, you will find a complete guide to building your own catamaran. You will also find detailed information on why you may want to consider building your catamaran and approximately how much this project would cost. Finally, we will explore the advantages and disadvantages of building a catamaran from scratch.

Why You Might Want To Build Your Own Catamaran

Most people might think that purchasing a used boat to repair and fix it up would be cheaper than a DIY cruising catamaran. But while building your own catamaran could be an enormous undertaking, it also comes with many advantages over buying something used. 

Other than the unique opportunity to create beautiful memories and experiences while cruising, sailing, and exploring beautiful coastlines, there are a number of benefits that come along with the DIY approach.  

Knowing Your Boat

Building your own catamaran provides you with intimate knowledge of your boat. You will know every corner, including where to find every bolt, wire, bulkhead, rib, hose, and support as you installed them yourself. This knowledge will enhance your confidence while at sea since you will have entrusted your life to a boat whose history you are aware of and deeply connected to.

Pride of Ownership

The satisfaction you get from crafting something with your own hands is immense. As a result, the knowledge that you built your boat from scratch will fill you with absolute pride and an immense sense of achievement. Furthermore, as an owner-builder, you get to keep and enjoy the boat for as many years as you wish.

Substantial Cost Savings

Building your catamaran will work out cheaper than buying a new or even gently used boat. Though you will likely require some additional labor since doing some things will require an extra pair of hands, if you are particularly good at DIY, you will save a significant amount of money on labor costs as a whole. 

Freedom To Create Your Own Designs

If you decide to buy a catamaran boat, it might not be easy to find one that meets your unique needs. However, instead of choosing from production boats that bear traditional and outdated designs, you can come up with an ultra-modern design or style for your catamaran. You also get to pick your layout, size, and equipment based on your taste and budget.

Great Learning Experience

Building your own boat will help you pick up numerous skills that will come in handy later when sailing your boat. As much as you might still require an expert to help you with specialized skills like carpentry or wiring, your new skills will serve you well. This will also be beneficial when it comes to your boat’s maintenance and fixing things for yourself. 

What To Look For in Catamaran Boat Designs

When deciding on the type of catamaran boat to build, you may want to choose a design that’s simple and easy to build. This is because doing so will allow you to spend a shorter time building the boat. 

You also need to have a set of requirements to guide you in choosing your design or what you might call an ideal cruising catamaran wish list. This is essential because, ultimately, you want to build a boat that offers outstanding qualities such as:

• Delivers good speed
• Affordable to own and operate
• Agile, strong, and easy to maintain
• Has a high resistance to capsizing
• Great for sailing and cruising
• Delivers a comfortable and easy motion underway
• Good handling ability and high performance under sail
• User-friendly embarking and disembarking
• Provides ample living and accommodation space 
• Presents a reasonable resale value

It’s worth noting that, in general, catamaran boats tend to offer a fair resale value mainly because of scarcity and the high price accorded to production models. So, if you build a well-constructed catamaran, you are bound to get a return that’s much higher than the cost of materials upon resale.

It’s also good to consider whether the design you settle on is from an established designer. This is significant because documentation of the building process is just as valuable when it comes to selling the boat.

How Much Would It Cost To Build Your Own Catamaran?

The cost of building your cruising catamaran will depend heavily on the size of the boat you plan to build and the skills you bring to the table. To give you an idea of probable costs, a professionally built 40 foot (12.1 m) long cruising catamaran could go for up to $300,000. 

Though building it yourself will undoubtedly be cheaper, most DIY boatbuilders tend to underestimate the expected costs. Your final costs should cover not only the cost of material and equipment but also the labor and time it would take to come up with the final product. 

If you were to build a 40-foot (12.1-meter) catamaran, your cost of materials would range between 20-30% of the total cost. Therefore, for $300,000 total, the boat’s materials would range between $60,000 and $90,000. The hull tends to range between 15-35% of the total build. Again, this depends on the finish and furniture.

But before you even start working on the DIY project, you will need to figure out where to do the work. If your home has ample space, then you can opt for a backyard building. But if you live in a small apartment, then you might want to consider renting a small garage at first and then move on to a boatyard later. This is one of the significant costs involved in building your multi-haul.  

What You Will Need

To get a clearer picture of how much the entire project would cost, let’s have a look at what else you will need to purchase.

• Good design plans
• Working space
• Ground tackle
• Matting and roving
• Equipment such as the engine, windows, rudders, deck fittings, mast, and rigging

In addition to the above, you also need to install plumbing and electricals. You may also want to consider going electric rather than using diesel. Not only will this drastically reduce your maintenance costs, but you get to use the regenerated power for all of your housing needs while sailing. 

Some catamaran boat designs help you save costs by advocating the use of less expensive corpus materials. Most of the material goes directly into making the boat, which means there is hardly any wastage on vacuum bagging . With this method, there are few molds and temporal building forms and fewer fillers to grind off as waste. All these factors reduce the time and cost it takes to build your catamaran boat.

That said, building a boat of any kind is a huge financial undertaking. As such, you still need to have the financial ability to keep building; otherwise, your project will stall or take much longer than anticipated. Instead of enjoying yourself and making memories cruising to faraway lands, you might end up spending all your time building a seemingly never-ending boat.

To reiterate, this project is more of a labor of love, given that it involves a tremendous amount of manual work. Calculating an hourly rate on the time spent building the boat and adding this cost to that of materials may make it seem a very pricey exercise. However, it is vital to understand that your time matters, and every hour you spend working for “free” should be included. 

With that in mind, you need to ensure that you are fully devoted to the boat construction project and are sure you want to do it before you begin. Stopping halfway because it seems like too much work would be incredibly costly.

How To Build a Catamaran

When it comes to building a cruising catamaran, you have 3 main options:

• You can buy an old boat and refurbish it.
• Purchase a bare hull plus deck molding for a home-boat building.
• Start from scratch and build everything, including the hull, on your own. 

As mentioned above, renovating an existing boat may end up being more costly than starting from scratch. To build a catamaran boat from scratch, follow the below step-by-step guide.

Prepare the Essentials

Before you jump into such a large project, there are several important aspects to consider:

• Buy your plans from an established catamaran designer. You can also get inexpensive, easy-to-build catamaran designs online.
• Get access to a large working space or build a shed . Depending on your climate, you may need to opt for climate control to avoid an excess of moisture in humid areas. 
• Decide on your choice of hull material. This could be fiberglass, aluminum, steel, wood, or ferroconcrete. 
• Start working on a bill of materials estimate. Include everything that you think you need to get a better idea of the initial costs.

Build the Mast Beam

Using wood and epoxy, cut and glue together the pieces of wood that will form the mast beam. Most of the work at this stage can occur in a garage since it involves building small parts. Still, the work could take up to 4 months, so be prepared to put in long hours.

Build the Boat Hull

Now, it’s time to build the boat’s hull. A catamaran comprises two hulls which are connected with a deck. Below is a short video showing how to build a hull mold:

This work requires a larger facility, so you might need to move out of the garage and into a boatyard. If you don’t have access to a larger workshop, consider building a shed where you can work as you do the construction. Make sure there’s enough room to fit the boat and also allow you to work comfortably. To cover the shed, you can use opaque white tarps. 

Sheathe the Hull

Get all the materials you require for this stage in the construction, such as lots of resin, fiberglass, and foam for use in the hull cores. You’ll also require matting and glass roving to sheath the hull . 

Sheathing helps to make the hull impervious to water and other marine borers. But first, you need to prepare the hull using a rotary sander. To make it as smooth as possible, use light, sweeping strokes. This is a very dusty task so be prepared to wear a facemask and safety goggles. 

Install the Bulkheads

Next is installing the plywood bulkheads . You might need to call in friends to help turn the hulls or use a crane. In this step, you will need to laminate the hull sides on the molded hull panels and bond them above the bulkheads. Ensure the bulkheads are snug and sealed in place.

Construct the Interior Structure

Over the next couple of months, the boat work will involve joining the hulls together with the beams that you had made back in the garage. Then, install the cuddy cabin, decks , and the cockpit . Soon the boat will start to take the shape of a catamaran.

Next, proceed to construct the major structural components such as stairs, hatches, mini-keels, and the interior. Then comes the work of fairing the boat, which is quite labor-intensive. 

Finally, it’s time to apply primer on the catamaran boat and start the paintwork. Before painting the boat, you will need to do additional sanding to finish off the two layers of primer as well as fill all the pinholes. Since it’s a large boat, the catamaran has lots of surface area; thus, the sanding could get extremely exhausting—mentally and physically—at this point.

The painting can take a while, too. The hulls are the easiest to paint, but the topsides, non-skid, as well as masking and prepping could seem never-ending. 

The final stretch involves working on the center bridge deck cabin and other final touches like installing the engines, electricals, and plumbing. This is also the time to fix the rudders, rigging, mast, windows, and deck fittings.

Launch Your Cruising Catamaran

After many months or years of hard work, your cruising catamaran is finally ready to test the waters. After lowering the boat into the water, check carefully in case there are leaks. If none, you can set up the sails and take your catamaran out for your first cruise. 

Below is a short video that takes you through the entire boat-building process:

If you don’t have deep pockets, don’t despair. It’s also possible to build an inexpensive catamaran boat, as shown in this post from the coastal passage .

The Pros of Building a Catamaran

Though it will be a costly endeavor, there are so many things to look forward to should you decide to build your own catamaran:

• It can be lots of fun.
• You get to have a new boat.
• It’s an excellent hobby for DIY enthusiasts.
• The effort is rewarding.
• It offers a great learning experience.
• You get the exact kind of boat you want.
• You can alter building plans and tailor the boat to suit your specific needs.
• It might be cheaper than buying a new boat.

The Cons of Building a Catamaran

Though there are a number of positive aspects to a DIY build, it is just as important to keep in mind that it won’t always be easy:

• Maintenance costs can be quite high.
• It’s both mentally and physically exhausting.
• It might require some technical know-how.
• It can take many months or even years to complete.
• It requires a lot of commitment to finish the DIY project.
• It might be challenging as well as expensive to get insurance.  
• You will spend almost all your free time building the boat. 

DIY Cruising Catamaran Tips and Tricks

If you are new to boat building, it would be a good idea to build a small boat first. This would give you a good indication as to whether you’d enjoy tackling a more extensive project like building a catamaran. Again, if you are the handy type, fixing your own electronics could also save you a significant amount of money. 

Here are more tips and tricks to get the most out of your DIY cruising catamaran:

• Lower your costs. Bring down your costs even further by sourcing for parts and supplies at marine surplus outlets, Craigslist, eBay, or wholesale suppliers. 
• Enhance your resale value. Most home-built boats are not easy to sell since they tend to be too customized. To enhance your resale value, it’s advisable to work with a standard design from a well-established naval architect.
• Follow the design instructions. Make sure to follow the designer’s instructions regarding the type of materials and tools to use during the build to avoid making costly mistakes.
• Maintain your original budget. Avoid any additional customizations once you have started building the boat. Using good plans and sticking to them ensures that your budget doesn’t spiral out of control.

Final Thoughts

Building a catamaran is about more than saving money. It’s fun, exciting, fulfilling, and can be a great learning experience. While it might take many months of back-breaking work, comparative shopping and sourcing for materials will help you save a lot of money. Still, at the end of it all, you’ll have a beautiful catamaran boat, all ready for your first cruising adventure.

However, if you have neither the time nor the energy to build your own catamaran from scratch, refurbishing an existing hull might prove faster and easier. It also works out much cheaper than buying a new boat.

Owner of CatamaranFreedom.com. A minimalist that has lived in a caravan in Sweden, 35ft Monohull in the Bahamas, and right now in his self-built Van. He just started the next adventure, to circumnavigate the world on a Catamaran!

One thought on “ DIY Cruising Catamaran: Complete Building Guide ”

Hello, I am a French Quebecer who is original, imaginative, creative and who finds that all boats and catamarans have a huge flaw and a very big lack of logic. I would have a brand new concept…. I am sending this message to any catamaran creator – designer to make those who have the opportunity and the intelligence to want to know about my innovative idea which will finally upset the market much richer. An idea that will totally change the concept of sailing, navigation and save so much worry!! All I would ask for is a small percentage of each sale of the new product. To be able to make me produce one when I have enough!! It is certain that like that, you just want to tell me: come on Mr. Lessard give us your idea but do not take your word to help me in return! But, if you are the kind of man to have only one word and maybe have a proof of your good faith if the realization of the project would make it… I will be very happy!! Giving it to everyone wouldn’t bother me either…. all I would like is to be able to find flax fiber (too expensive carbon) to be able to try to make my catamaran myself. Because not rich! Have a nice day and looking forward to having a message!!

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Catamaran Hull Design

• Post author By Rick
• Post date June 29, 2010
• 2 Comments on Catamaran Hull Design

Part 1: Notes from Richard Woods

Since the America’s Cup experimented with going multihull, there’s been a lot of interest in catamaran performance and the catamaran hull designs that define performance. Many guys are investigating whether to buy a catamaran or design and build their dream boat. Let it be said here that building a large catamaran is not for the faint of heart. People begin building 100s of boats a year, yet few are ever completed, as life always seems to have a way of interfering with a good boat build. 

Never the less, since the rest of this website is about selecting and buying a boat , it only seems fair to have at least one webpage that covers catamaran design. This page contains notes on boat hull design goals and an accompanying page from Terho Halme has mathematical formulas used in actual catamaran hull design. It has become a popular research stop and an important reference to the catamaran design community.

The content of this page was reproduced from the maestro of Catamaran designs, renown British naval architect, Richard Woods, who not only designs catamarans, he sails them across oceans…. repeatedly. He has a lot to say on the subject of catamaran hull design.

“…When it’ all said and done, the performance of a sailing catamaran is dependent on three primary specs: length, sail area and weight. If the boat is longer it generally means it’ a faster boat. If she has more sail area, it means she’ a faster boat and if she’ light it means she’ a faster boat.  Of course, there are limits: Too much sail area capsizes the boat in brisk winds. If the boat is designed too light, she will not take any kind of punishment. Too slim a hull design and the boat becomes a large Hobie Cat capable of only carrying your lunch. Of course, too long and large and you’d have to be Bill Gates to afford one. Then there are lot of additional and very important factors like underwater hull shape, aspect ratios of boards and sails, wet deck clearance, rotating or fixed rigging and so on….” Richard Woods

All Catamarans are not equal, but all sailboats have two things in common: They travel on water and they’re wind powered, so the Catamaran design equations in the 2nd part should apply to every catamaran from a heavy cruising Cat to a true ocean racer.

Richard Wood’s comments on catamaran design:

We all know that multihulls can be made faster by making them longer or lighter or by adding more sail. Those factors are the most important and why they are used as the basis of most rating rules. However using just those figures is a bit like determining a cars performance just by its hp and curbside weight. It would also imply that a Tornado would sail as fast forwards as backwards (OK, I know I just wrote that a Catalac went faster backwards than forwards)

So what next?? Weight and length can be combined into the Slenderness Ratio (SLR). But since most multihulls have similar Depth/WL beam ratios you can pretty much say the SLR equates to the LWL/BWL ratio. Typically this will be 8-10:1 for a slow cruising catamaran (or the main hull of most trimarans), 12-14:1 for a performance cruiser and 20:1 for an extreme racer.

So by and large faster boats have finer hulls. But the wetted surface area (WSA) increases proportionately as fineness increases (for a given displacement the half orange shape gives the least WSA) so fine hulls tend to be slower in low wind speeds.

The most important catamaran design hull shape factor, is the Prismatic Coefficient (Cp). This is a measure of the fullness of the ends of the hull. Instinctively you might think that fine ends would be faster as they would “cut through the water better”. But in fact you want a high Cp for high speeds. However everything is interrelated. If you have fine hulls you can use a lower Cp. Most monohulls have a Cp of 0.55- 0.57. And that is about right for displacement speeds.

However the key to Catamaran design is you need a higher Cp if you want to sail fast. So a multihull should be at least 0.61 and a heavy displacement multihull a bit higher still. It is difficult to get much over 0.67 without a very distorted hull shape or one with excessive WSA. So all multihulls should have a Cp between 0.61 and 0.65. None of this is very special or new. It has been well known by naval architects for at least 50 years.

There are various ways of achieving a high Cp. You could fit bulb bows (as Lock Crowther did). Note this bow is a bit different from those seen on ships (which work at very specific hull speeds – which are very low for their LOA). But one problem with them is that these tend to slam in a seaway. 

Another way is to have a very wide planing aft section. But that can increase WSA and leads to other problems I’ll mention in a minute. Finally you can flatten out the hull rocker (the keel shape seen from the side) and add a bustle aft. That is the approach I use, in part because that adds displacement aft, just where it is most needed.

I agree that a high Cp increases drag at low speeds. But at speeds over hull speed drag decreases dramatically on a high Cp boat relative to one with a low Cp. With the correct Cp drag can be reduced by over 10%. In other words you will go 10% faster (and that is a lot!) in the same wind and with the same sails as a boat with a unfavorable Cp. In light winds it is easy to overcome the extra drag because you have lots of stability and so can fly extra light weather sails.

The time you really need a high Cp boat is when beating to windward in a big sea. Then you don’t have the stability and really want to get to your destination fast. At least I do, I don’t mind slowly drifting along in a calm. But I hate “windward bashing”

But when you sail to windward the boat pitches. The sea isn’t like a test tank or a computer program. And here I agree with Evan. Immersed transoms will slow you down (that is why I use a narrower transom than most designers).

I also agree with Evan (and why not, he knows more about Volvo 60 design than nearly anyone else on the planet) in that I don’t think you should compare a catamaran hull to a monohull, even a racing one. Why chose a Volvo 60/Vendee boat with an immersed transom? Why not chose a 60ft Americas Cup boat with a narrow out of the water transom?? 

To be honest I haven’t use Michelet so cannot really comment. But I have tested model catamarans in a big test tank and I know how inaccurate tank test results can be. I cannot believe that a computer program will be better.

It would be easy to prove one way or the other though. A catamaran hull is much like a frigate hull (similar SLR, L/B ratios and Froude numbers) and there is plenty of data available for those. There is also a lot of data for the round bilge narrow non planing motorboats popular in the 1930’-50’s which again are similar to a single multihull hull.

One of the key findings I discovered with my tank test work was just how great the drag was due to wave interference between the hulls. Even a catamaran with a modern wide hull spacing had a drag increase of up to 20 % when compared to hulls at infinite spacing. One reason why just flying a hull is fast (the Cp increases when you do as well, which also helps). So you cannot just double the drag of a single hull and expect to get accurate results. And any speed prediction formula must include a windage factor if it is to give meaningful results.About 25 years ago we sailed two identical 24ft Striders next to each other. They were the same speed. Then we moved the crew of one boat to the bow. That boat IMMEDIATELY went ½ knot faster. That is why I now arrange the deck layout of my racing boats so that the crew can stay in front of the mast at all times, even when tacking or using the spinnaker.

I once raced against a bridge deck cabin catamaran whose skipper kept the 5 crew on the forward netting beam the whole race. He won.

Richard Woods of Woods Designs www.sailingcatamarans.com

• Tags Buying Advice , Catamaran Designers

Owner of a Catalac 8M and Catamaransite webmaster.

2 replies on “Catamaran Hull Design”

I totally agree with what you say. But Uli only talk sailing catamarans.

If only solar power. You need the very best. As limited watts. Hp.

The closer to 1-20 the better.

Closing the hulls to fit in cheaper marina berth. ?

You say not too close. But is that for sailing only.

Any comment is greatly appreciated

Kind regards Jeppe

Superb article

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Category: Our Catamaran Build Kits

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The schionning team have a lot of contact with equipment suppliers and manufacturers, and hear feedback on certain brands or systems from our many customers. there are many schionnings cruising the world and testing products longevity and the customer service offered by the manufacturer., on this page we will list products and companies that we know to provide above average quality and service. it is always growing, and if your company provides equipment used on our designs and you would like to be included - please contact us., engines & drive systems.

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Technical Information

The technical information page is a collection of documents (mostly in pdf format) on the materials and systems used in schionning catamarans. including data sheets, engineering information, strength comparisons of each core material and informative articles from jeff outling the design of certain system such as engine choices and main sheet systems., detailed engineering data for your research, we understand that getting your head around the process of building your own boat, or having one built, can take a little while. to gain a greater understanding of the materials used in our designs, the below data sheets have been supplied by atl composites, and contain all of the technical data you could need regarding the composites we use. in addition are articles or documents written by jeff about certain systems used on our designs and why., all technical information and data sheets on west system/duflex/durakore provided courtesy of atl composites. for more information please see the atl composites website here., documents library.

Information Sheet – CE CERTIFICATION PROCESS

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Kit Materials Contents

Kit materials' contents, so if you order a schionning kit, what exactly is going to arrive see an overview of the materials you will receive, and what each is used for during the build process. fibreglass cloth or tapes microspheres, microballoons or microfibers take a closer look and you can answer these questions., our schionning kits are a no nonsense, common-sense approach to building a boat. we offer great service, fast delivery and access to anything you could need for your boat straight from the supplier to your door. our construction plans and kits are sold with 100% professional boatbuilder support via phone and email, any time you're unsure or just need a second opinion, we're here..

Our kits contain all of your basic materials to build your boat to a faired shell stage, ready for painting and fit-out. We have sail-away costing estimates available for all of our standard designs, and this will give you an accurate idea of the overall cost of your project. This costing varies depending on your level of finish, as you can imagine different options vary greatly in price.

Below is a quick glance at what your Schionning Kit will include and what each item is primarily used for, we hope this is helpful and if you should require more detailed information please don’t hesitate to contact our office.

What do I actually receive?

DUFLEX PRE-LAMINATED PANELS

DuFlex pre-laminated panels are the main and most important material used in our kits, predominantly in the flat panel designs, however they are used in Strip-planked designs also, though to a lesser extent. These panels are 2400mm x 1200mm and are CNC routed to speed up build time on our Wildernes X Series, as well as some of our power designs. For internal furniture, a paper honeycomb core is used instead of the end-grain balsa wood core that is used for main structural areas. The use of this is purely to save weight in the shell and therefore produce a faster, more responsive catamaran.

KINETIX LAMINATING RESIN & HARDENER

WEST SYSTEM EPOXY RESINS

FIBREGLASS TAPES (DOUBLE BIAS)

CARBON FIBRE CLOTH

FIBREGLASS CLOTH

The kit process, building your own boat can be a daunting prospect, however to demonstrate each step in the kit assembly process, we've created this guide for you to study. as you can see our kits are the ultimate in building efficiency and have been streamlined over 30+ years to ensure that you're on the water faster and with less effort., how does it all go together.

The first step to building your dream catamaran begins with a strongback – this is a square frame used to position the temporary frames that will be used to form the hull shape. This frame will be set up and must be square and accurate, a string or laser level can be used to achieve this.

The forebeam is now installed along with the striker attachment fitting, as shown above. The bridgedeck is installed shortly after and taped onto the bulkheads with webs installed, this now completes what is a quite stiff and strong platform to work on.

Now that the bridgedeck is in place, the forward webs and dash will be fitted. At this stage, all furniture and internal work begins, with the main panels left off for ease of access when working.

Material Choices

Schionning material choices, solutions that work best for catamarans & why, our designs are based on cored composite construction techniques using west system epoxy resin and knitted fabrics. but given the range of today's composite technologies, which solution works best for catamarans and why written by jeff schionning, selecting the correct materials, resin choices.

It also fully protects the boat against water absorption and it can not develop the dreaded Osmosis.

We choose ATL Composite’s resin systems for their superior quality, reliability and value for money.

Having worked closely with the ATL Composites team and their products for many years, we know we can stand by their material solutions, and rely on great service should something unexpected happen.

This may not seem important but when working with a material for an extended period of time, the small things make all the difference.

CORES Which One to Use?

• End-Grain Balsa – 150kg per cubic metre
• Superlight Balsa – 94kg per cubic metre
• Western Red Cedar – 360-380kg per cubic metre
• Foam – 80kg per cubic metre

BALSA END GRAIN (150 kg/cubic metre)

Balsa  has very good values and we can produce a shell using a very light laminate. It will be very stiff and very resilient to fatigue.

It has exceptional qualities including very high compression strength, extremely good sheer capabilities and fantastic sheer stiffness.

Compressive strength is the resistance to collapsing when pressure is applied perpendicular to the surface as when pushing directly onto the material with the point of your finger. Balsa is far stronger than Foam (80kg/cubic metre) in compression.

Balsa is also very strong in shear. This is when the core sample is held flat between your hands, one hand slid one way and the other slid the opposite way, when the core tears through the middle the core has failed in sheer. The amount of stretch you feel before the core shears is shear stiffness. To compensate for sheer weakness the core is made thicker. So 13mm Balsa may be equal in sheer to 19mm Foam.

(80 to 200 kg/m³)

There are many boats sailing that are built from foam as it’s mechanical properties are good for boat building.

• Initially one would expect this cat shell to be lighter as it is ½ the weight of Balsa. We do have to compensate for its weaknesses and will then add to the reinforcement the reinforcement on the outside to spread that compression load over more core and need a triaxial type weave to compensate for the veneer content that runs fore and aft on the Durakore.
• Secondly, we need to increase the Core thickness to compensate for the shear value, usually neutralizing the weight advantage.
• We only use structural foam core that is closed-cell and cross-linked.

The end result using foam core amounts to a very similar total boat weight. Professional builders can achieve a good result but usually use vacuum bagging and very good molds to achieve this.

Secondary Issues

Balsa can absorb water. It needs extreme neglect to rot (very unusual). Water soaks along the end grain quickly. It travels very slowly across the grain. We use balsa under the waterline especially because of it’s high compression strength for beaching etc. any core type must be sealed. Damage to all cores results in the same sort of repair. Notice a damp spot remaining when drying out to anti-foul… simply grind back the surface glass exposing the core, dry it out and re-glass – it’s that easy.

Timber cores are cheaper than Foam in most cases.

A light, high tech cat returns a far better (often 2 – 3 times) re-sale than lower tech materials. Often saving $10,000 on materials initially, loses $200,000 on re-sale – a serious reality.

Our boats can be built using Balsa, Foam or Western Red Cedar. Combine strength, stiffness, lightness and cost, with ease of use – it just makes good sense!

How To Build A Catamaran? (A Step-By-Step Guide)

Are you excited about the prospect of building your own catamaran? With a little research, planning, and the right tools, you can turn your vision into reality in no time.

In this step-by-step guide, well show you how to make the most of this incredible boatbuilding project.

From selecting the materials and planning the design to constructing the hulls and deck and outfitting the boat, well walk you through everything you need to know to build a catamaran of your own.

So, grab your tools and lets get started!

Table of Contents

Short Answer

Building a catamaran requires careful planning and a lot of patience.

The first step is to decide on the design and the materials you will use.

You will need plans for the project, along with lumber and other materials such as fiberglass and epoxy.

The next step is to build the catamaran frame, which involves cutting and fitting the wood pieces together to form the hulls and decks.

Finally, you will need to attach the decking, add the rig and sails, and finish the project with paint and varnish.

Benefits of Building a Catamaran

Building a catamaran can be a very rewarding experience.

Not only will you have the satisfaction of creating something with your own hands, but you will also have a boat that is uniquely yours.

Catamarans offer many benefits over traditional monohull boats, making them an ideal choice for those looking for a reliable and efficient ride.

These benefits include greater stability, more space, improved fuel efficiency, and greater speed.

Stability is one of the biggest advantages of catamarans.

The two hulls provide a wider base that helps to keep the boat from rocking and rolling in rough waters.

This makes for a much smoother and safer ride, even in choppy waters.

Additionally, the two hulls create an open area between them that is perfect for storing equipment, making it ideal for longer trips.

Catamarans are also more fuel efficient than monohulls.

This is because the two hulls provide lift, allowing the boat to glide through the water more easily.

This means you won’t need to use as much fuel to power your boat, allowing you to save money in the long run.

Finally, catamarans are faster than monohulls.

This is due to the increased surface area of the two hulls, which allows the boat to move more easily through the water.

This makes them ideal for those who want to travel quickly and efficiently.

Overall, building a catamaran can be a fun and rewarding experience.

With the right materials and tools, you can create a boat that is unique to you and offers many benefits over traditional monohull boats.

With the right planning and construction process, you can create a catamaran that will be the envy of your peers.

Selecting the Materials

Selecting the right materials is a crucial step in building a catamaran.

The type of material you choose will depend on the size and type of catamaran you are building, as well as your budget and experience.

Catamarans are typically constructed from wood, aluminum, or fiberglass.

Each of these materials has unique advantages, so it is important to research the pros and cons of each before making a decision.

Wood is the traditional material used to build catamarans and is often the most cost-effective option.

Wooden catamarans are strong and stable, and they can be custom-built to any size or shape.

However, wood requires a lot of maintenance and can be susceptible to rot and water damage.

Aluminum is a great option for larger catamarans, as it is lightweight and resistant to corrosion.

It is also relatively easy to work with and can be welded together to create a strong and durable structure.

However, aluminum is a more expensive material and is not as flexible as wood or fiberglass.

Fiberglass is the most popular material for building catamarans, as it is lightweight, strong, and resistant to corrosion.

Fiberglass is also relatively easy to work with and can be shaped to create unique designs.

However, fiberglass is also the most expensive option and can be difficult to repair if damaged.

Once you have selected the material, it is important to purchase the right amount for the project.

Make sure to measure the catamaran carefully and purchase enough material to account for any mistakes or waste.

It is also important to purchase high-quality materials that will last for years.

With the right materials, you can build an amazing catamaran that you will enjoy for years to come.

Planning the Design

When planning the design of your catamaran, youll need to consider a variety of factors, including the size, shape, and type of material youll be using.

Consider the size and weight of the catamaran and the type of water it will be used in.

Youll also need to think about how the catamaran will be used, such as for recreational or commercial purposes.

When it comes to the shape of the catamaran, the most common design is the two-hulled V-shape.

This shape is ideal as it offers stability and is easy to maneuver.

However, depending on the type of use, other shapes, such as the three-hulled catamaran, may be better suited.

The material you choose for your catamaran will also play a role in the design process.

Common materials used to build catamarans are wood, fiberglass, aluminum, and composites.

Each material has its own advantages and disadvantages, so its important to research and select the best material for your project.

Finally, when planning the design, youll need to consider the outfitting of the boat.

This includes items such as decking, seating, and a helm station.

Make sure to think about the type of equipment youll need for your catamaran, and consider how it will be installed.

By taking the time to plan the design of your catamaran, you can ensure that you get the best possible outcome.

Doing your research, selecting the right materials, and choosing the right outfitting will all help you create an amazing catamaran that will last for years to come.

Constructing the Hulls and Deck

Constructing the hulls and deck of a catamaran is perhaps the most important and time-consuming step in building a catamaran.

You will need to plan the design of the hulls and deck carefully to ensure that your catamaran is strong, stable, and seaworthy.

When constructing the hulls, you will need to use strong and light materials that are suitable for marine environments.

Fiberglass is a good choice for this, as it is strong and lightweight.

You will need to cut and shape the fiberglass to fit the shape of the hulls, and you will need to use a strong adhesive to bond the pieces together.

The deck of the catamaran will need to be strong and stable enough to support the weight of the passengers and cargo.

You will need to construct the deck out of marine-grade plywood, and you will need to use a strong adhesive to bond the pieces together.

You may also need to add extra support beams to the deck for added strength.

Once the hulls and deck have been constructed, you will need to sand and finish them to ensure a smooth and watertight surface.

You may need to use a sealer or primer to protect the wood and fiberglass from the elements.

Finally, you will need to attach the hulls and deck together.

This can be done with bolts, screws, or other fasteners.

You may also need to use a water-resistant sealant to ensure a watertight connection between the hulls and deck.

Outfitting the Boat

Outfitting a catamaran is an essential part of the build process.

Once the hulls and deck are constructed, you’ll need to ensure that all the necessary components are in place for a successful voyage.

This includes items such as masts, sails, rudders, and outriggers.

It is critical to ensure that the boat is outfitted with the right components for its size and purpose.

For example, if you are building a small catamaran for speed and agility, you’ll need to outfit it with a light and responsive mast and sail.

If you are building a larger craft for comfort and luxury, you’ll need to outfit it with a heavier and more resistant mast and sail.

Additionally, you’ll need to select the right outriggers and rudders for the catamaran’s size and purpose.

Outfitting a catamaran can be a complex process, and it is important to do the research and plan ahead.

Taking the time to select the right materials and components will ensure that your boat is outfitted for success.

Additionally, it is important to use quality materials and components to ensure a safe and successful voyage.

With careful planning and quality components, you can outfit your catamaran for a successful journey.

Acquiring the Right Tools

When it comes to building a catamaran, having the right tools can make all the difference.

To get started, you’ll need a variety of hand tools, including saws, drills, sanders, and screwdrivers.

You’ll also need power tools like routers, biscuit joiners, and angle grinders.

It’s also important to have safety equipment like safety glasses, ear protection, and respirators.

You’ll also need a variety of measuring tools, such as rulers, calipers, and tape measures.

Finally, you’ll need a selection of glues, adhesives, epoxies, and sealants.

With the right tools, you’ll be able to complete your catamaran project safely and efficiently.

Researching and Planning Your Build

Researching and planning your build are essential steps in the process of building a catamaran.

The first step is to become familiar with the design and construction of catamarans.

Start by researching different types of catamarans, from the small and lightweight recreational boats to the larger and more luxurious cruising vessels.

Learn about the advantages and disadvantages of the different types of catamarans and determine which type is best suited to your needs.

Once you have a good understanding of the different types of catamarans, you can begin researching the materials and tools you will need for your project.

You will need to choose the type of wood you will use for the boats hulls and deck, as well as the type of fiberglass and resin you will use for the hulls and deck.

You will also need to choose the type of engine you will use and the type of rigging and sail you will use.

Once you have selected the materials and tools you will need for your project, you will need to create a plan for the construction of your catamaran.

You will need to determine the size and shape of your boat, the types of joints you will use to construct the hulls and deck, and the type of engine and rigging you will need.

You should also plan out the sequence of construction steps, so that you can build the catamaran in the most efficient way.

Finally, you will need to research the best ways to protect your catamaran from the elements.

You will need to determine what type of paint or varnish to use on the hulls and deck, and you will need to research the most effective ways to protect your boat from the sun, wind, and water.

By taking the time to research and plan your build, you will be able to create a catamaran that is well-built, efficient, and beautiful.

With the right research and planning, you can create an amazing catamaran that will be the envy of your friends.

Final Thoughts

Building a catamaran is a rewarding experience that can be achieved with the right approach and materials.

With a clear plan, the right tools, and a good understanding of woodworking and fiberglass techniques, you can build an amazing catamaran to share with your family and friends.

So what are you waiting for? Get started on your own catamaran build today and all the rewards that come with it!

James Frami

At the age of 15, he and four other friends from his neighborhood constructed their first boat. He has been sailing for almost 30 years and has a wealth of knowledge that he wants to share with others.

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Cat 22 Boat Plans…

$ 325.00 – $ 350.00

Cat 22 Boat Plans (CT22)

[CT22] Boat plans for a 22′ modern catamaran for twin outboards.

Description

Additional information.

• Reviews (0)

This design sat on our drafting table for almost 20 years. It started with somebody showing me the lines of a cat used by the Australian Coast Guard and asking for an epoxy-plywood version. We did not go very far. A catamaran cost more in material and labor than a monohull and after a quick estimate, the project went on the back burner.

Over the years, the same request came back regularly and as many of our builders have proven that they can successfully tackle elaborate projects, I went back to the drawing board and here is the result, our Cat 22 (CT22).

Click here to see study plans

Related kits:, cnc kit  –  marinepoxy kit  –  silvertip epoxy kit.

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• Aluminum Boat Plans

35 FT Catamaran Workboat (616)

This design (plan) is a 35 FT aluminum catamaran. Power is two (2) Volvo D4-225 DP I/O at 189 HP each.

Gross weight and speed dependent on final arrangement.

*The above price is for the construction plans and a onetime use of the CAD cutting files.

Weight in table above is the weight of the uncut aluminum sheet and plate.

Stock hull is the flush deck shown on the included PDF drawing. Cabin and bullwork are available options.

Cabin and bullwork is not included in the aluminum sheet and plate weight calculations.

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Open Source 13-15m Catamaran Plans

Discussion in ' Projects & Proposals ' started by archie1492 , Jan 3, 2018 .

archie1492 Junior Member

Dear all, I want to create a detailed building information model for a 13 - 15 meter catamaran that is capable of being CNC cut and assembled. I need some help finding plans I can use as a basis of design. Specifically, I need the hull profile information. Section cuts through the hull will give me the ideal contours for a boat of this size. Can someone help? After weeks of searching, I still cannot find these online. For now, this is merely an exercise in my 3d modeling capability. I'd like to share my drawing work with the forum if I can get some assistance to start off. There are future possibilities I am also considering. I'm an experienced Architect & construction designer with a strong background in computer aided design. Once I've modeled the boat in 3d, I would like to flatten the various parts and create plans for the individual boat parts to be CNC cut. I would like to build a small scale model first (1:2o or perhaps 1:10) with the ultimate goal of building the boat full scale.  

TANSL Senior Member

This is a very simple catamaran which, if you are interested, I can give you a lot of information. It is not a spectacular boat but it can help you in your first steps with boats. LOA = 16 m, Lbp = 14.6 m  

Thanks I really appreciate it. The hull lines for the motor cat you've provided are not quite what i'm looking for. I'm specifically looking for the hull lines for a 14m catamaran sail boat. I guess there is some standard for these contours especially the area below the waterline. Check the attached document as well if anyone is interested in this.  

Attached Files:

catdimension.pdf

I'm sorry, you never specified that it was a sailing catamaran. I thought that to carry out your purposes, " For now, this is merely an exercise in my 3d modeling capability ", any model was valid. Apparently, you have different purposes than, in addition to, to practice with 3D models. The better you clarify what you are really looking for, the better someone can help you.  

Hi all, Here's an example of what kind of information I need to get started. Optimising Hull Lines for Performance https://www.graingerdesigns.net/the-lab/optimising-hull-lines-for-performance/ The boat shown here is a 8.5m cat sailboat. I'm looking for something a bit larger in the 14m range. Also, the images only show one of the hull profiles. I'd like profile lines for the entire boat. I will post some other images I've found online showing profile lines for smaller boats. I still cannot find any 14m hull lines. Can anyone help?  

grainger_1488019480.jpg

Grainger_1488019410.jpg, grainger_1488019333.jpg, grainger_1488019265.jpg, grainger_1488019219.jpg.

Here are some other hull lines I've found online. Hope this is useful to anyone else looking for this information. Thanks!  

Evergreen Lines small.jpg

Hull-lines.jpg, shark-20.jpg.

You could take any of those boats and scaleb the lines to get the desired length. Since it is only a 3D modeling exercise, you do not have to worry about anything else. You could even make a mix of 2 or 3 of those models to get the one you are looking for.  

Thanks Tansl, I'd like to make the boat drawings accurate for the 14m size. Perhaps one day I will develop this into something worth building full scale. The more accurate I can draw the boat, the more I will learn about the boat design.  

Maybe it does not look like it but I would like to help you. If you do not find what you want on the Internet I could draw a lines plan, strictly following your instructions, which would help you to make the 3D model. Or, if you find something similar on the internet I can adapt it to your needs and fill in the information that you indicate you need for your work. I insist that starting from the shapes of a 10 m boat you can get the shapes of a boat of 14 m, with total accuracy.  

Dolfiman Senior Member

archie1492 said: ↑ I'd like to make the boat drawings accurate for the 14m size. Perhaps one day I will develop this into something worth building full scale. The more accurate I can draw the boat, the more I will learn about the boat design. Click to expand...

Cata 14m with Gene-Hull UE Catamaran 2.3_2018 01 15.ods

Gene-Hull Catamaran 2.3 User Guide_2018 01 16.pdf

Hull for cata 14m with Gene-Hull UE Catamaran 2.3_2018 01 16.pdf

Dolfiman, thanks so much! This is exactly what I was looking for. It's very interesting and probably a bit over my head at this point. I think this should work for modeling the basic hull shape. For the bridge deck and all of the stuff above the hull I can model this with a bit more creativity. Although, I'd like to learn more about understanding the center of gravity for the boat and the proper location of the mast. Are there any rules of thumb about this? Thanks again!  

archie1492 said: ↑ I think this should work for modeling the basic hull shape. Click to expand...

Cata 14m V2 with Gene-Hull UE Catamaran 2.3_2018 01 15.ods

In complement to illustrate this first approach, my good friend Alain did some 3D views here attached of the hull V2 version with Multisurf (using fit for purpose ouput data in section 5. of the above file). To inspire you , some other examples of cata, more sport/day sailer oriented than the Saona 47 : - R/P 45 (Reichel-Pugh) : multihull http://reichel-pugh.com/tag/multihull/ - Dazcat 1295 : in this video, from 1:45 the launch, you can see the hulls from various angles https://www.youtube.com/watch?v=0BZF4Udda5E - SIG 45 (VPLP design) : from 1:20 you can see the winward hull fully lifted ​  

dean 1962 New Member

archie1492 said: ↑ Dear all, I want to create a detailed building information model for a 13 - 15 meter catamaran that is capable of being CNC cut and assembled. I need some help finding plans I can use as a basis of design. Specifically, I need the hull profile information. Section cuts through the hull will give me the ideal contours for a boat of this size. Can someone help? After weeks of searching, I still cannot find these online. For now, this is merely an exercise in my 3d modeling capability. I'd like to share my drawing work with the forum if I can get some assistance to start off. There are future possibilities I am also considering. I'm an experienced Architect & construction designer with a strong background in computer aided design. Once I've modeled the boat in 3d, I would like to flatten the various parts and create plans for the individual boat parts to be CNC cut. I would like to build a small scale model first (1:2o or perhaps 1:10) with the ultimate goal of building the boat full scale. Click to expand...

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Archie, I have been looking to do the same thing. Where are you at on the project? Very interested in hearing all about it. Thanks.  

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Catamaran Cruisers Houseboats

A Catamaran Cruisers Houseboat Floorplan for Every Need

8x22 Scat Cat

Catamaran Cruisers introduces the 8'x22' Scat Cat. The Scat Cat is a smaller verison of the Party Cat Deck Boat and features our classic multi-chambered fiberglass hulls with deluxe seating.

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