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- Sailboat Guide
Sigma 36 (S&S)
Sigma 36 (S&S) is a 35 ′ 11 ″ / 11 m monohull sailboat designed by Sparkman & Stephens and built by Cheoy Lee Shipyard starting in 1968.
Rig and Sails
Auxilary power, accomodations, calculations.
The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.
Classic hull speed formula:
Hull Speed = 1.34 x √LWL
Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL
Sail Area / Displacement Ratio
A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.
SA/D = SA ÷ (D ÷ 64) 2/3
- SA : Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
- D : Displacement in pounds.
Ballast / Displacement Ratio
A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.
Ballast / Displacement * 100
Displacement / Length Ratio
A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.
D/L = (D ÷ 2240) ÷ (0.01 x LWL)³
- D: Displacement of the boat in pounds.
- LWL: Waterline length in feet
Comfort Ratio
This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.
Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )
- D: Displacement of the boat in pounds
- LOA: Length overall in feet
- Beam: Width of boat at the widest point in feet
Capsize Screening Formula
This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.
CSV = Beam ÷ ³√(D / 64)
S&S design #1710.8. Similar to GAIA CLASS (S&S #1710) and the SWAN 36(S&S #1710.58).
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Yacht Database
- Marine Projects
Sigma 36 - 362
Sigma 36 - 362 - Marine Projects / STW003853
The Sigma 362 is the cruising version of the Sigma 36, produced since 1983 it was also proposed with a fin keel, which reduced the draft. Two or three types of interior layouts.
Technical data
cabin cruiser
cruising/regatta
Volvo MD11 33HP
overall length
hull length
waterline length
standard draft
minimum draft
displacement
diesel tank
mast height
Accomodation layouts
standard version
Charter version
DOCUMENTS: Sigma 36 - 362
Sigma 36 sales brochure
pdf middle resolution, 4 pages of pictures and descriptions, english language.
Sigma 362 test by Practical Boat Owner magazine
pdf middle resolution, single page, english language
If you find some wrong or lacking data of this boat, you can propose an update.
Technical forum: sigma 36 - 362.
Would you know where I would find drawings for the 362 hull with measurements? 30/08/2023 by stw-7182
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Sigma 36 (Thomas) - Sailboat Data, Parts & Rigging
Sailboat data, rig dimensions and recommended sail areas for Sigma 36 (Thomas) sailboat. Tech info about rigging, halyards, sheets, mainsail covers and more.
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Sigma Yachts Sigma 36
General Data
Shipbuilder:, see also: boats for sale.
- Bavaria Yachtbau Bavaria 36 Cruiser
- BENETEAU FIRST 36.7
- Dehler 36 SQ
- Jeanneau SUN ODYSSEY 37
- Jeanneau Sun Fast 37
Overall length:
Maximum beam:, displacement:, straightening:, construction materials:, sail details mq, transmission:.
SIGMA 36 (THOMAS) Detailed Review
If you are a boat enthusiast looking to get more information on specs, built, make, etc. of different boats, then here is a complete review of SIGMA 36 (THOMAS). Built by undefined and designed by David Thomas, the boat was first built in 1979. It has a hull type of Fin w/spade rudder and LOA is 10.97. Its sail area/displacement ratio 18.18. Its auxiliary power tank, manufactured by Volvo, runs on Diesel.
SIGMA 36 (THOMAS) has retained its value as a result of superior building, a solid reputation, and a devoted owner base. Read on to find out more about SIGMA 36 (THOMAS) and decide if it is a fit for your boating needs.
Boat Information
Boat specifications, sail boat calculation, rig and sail specs, auxillary power tank, contributions, who designed the sigma 36 (thomas).
SIGMA 36 (THOMAS) was designed by David Thomas.
When was SIGMA 36 (THOMAS) first built?
SIGMA 36 (THOMAS) was first built in 1979.
How long is SIGMA 36 (THOMAS)?
SIGMA 36 (THOMAS) is 8.76 m in length.
What is mast height on SIGMA 36 (THOMAS)?
SIGMA 36 (THOMAS) has a mast height of 13.72 m.
Member Boats at HarborMoor
The Sigma 362 is a 36.0ft masthead sloop designed by David Thomas and built in fiberglass since 1983.
The Sigma 362 is a moderate weight sailboat which is a reasonably good performer. It is very stable / stiff and has a good righting capability if capsized. It is best suited as a coastal cruiser.
Sigma 362 for sale elsewhere on the web:
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40 to 50 indicates a heavy bluewater boat; over 50 indicates an extremely heavy bluewater boat. Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam^1.33), where displacement is expressed in pounds, and length is expressed in feet. Capsize Screening Formula (CSF): Designed to determine if a boat has blue water capability.
The Sigma 36 thomas is a 36.0ft fractional sloop designed by David Thomas and built in fiberglass since 1979. The Sigma 36 thomas is a moderate weight sailboat which is a good performer. It is reasonably stable / stiff and has a good righting capability if capsized.
Sigma 36 (Thomas) is a 35′ 11″ / 11 m monohull sailboat designed by David Thomas and built by Marine Projects Ltd. (UK) starting in 1979. ... The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more. Formula. D/L = (D ÷ 2240) ÷ (0.01 x LWL)³ D: Displacement of the boat in ...
The Sigma 36 ss is a 36.0ft masthead sloop designed by Sparkman & Stephens and built in fiberglass by Cheoy Lee Shipyard since 1968. The Sigma 36 ss is a moderate weight sailboat which is slightly under powered. It is very stable / stiff and has an excellent righting capability if capsized. It is best suited as a bluewater cruising boat.
Sigma 36 (S&S) is a 35′ 11″ / 11 m monohull sailboat designed by Sparkman & Stephens and built by Cheoy Lee Shipyard starting in 1968. ... The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more. Formula. D/L = (D ÷ 2240) ÷ (0.01 x LWL)³ D: Displacement of the boat in pounds ...
The Sigma 36 was designed as a fast cruiser-racer in the days when racers were also expected to be comfortable (but fast) cruisers. Sigma 36s tend to be cheaper than the cruising Sigma 362s based on the same hull, mostly because many have had a hard racing life. The main differences between the 36 and 362 are that the 362 has a door to the aft ...
Sigma 36 - 362 - Marine Projects / STW003853. Sigma 36 - 362. - Marine Projects. Edit Print Favorite sailboats. The Sigma 362 is the cruising version of the Sigma 36, produced since 1983 it was also proposed with a fin keel, which reduced the draft. Two or three types of interior layouts.
The capsize screening value for Sigma 36 is 1.98, indicating that this boat could - if evaluated by this formula alone - be accepted to participate in ocean races. Immersion rate. The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Sigma 36 is about 255 kg/cm, alternatively 1432 lbs/inch.
The Sigma 36 - 362 produced by the builder Marine Projects and designed by David Thomas, is a cabin cruiser for cruising/regatta, rigged Sloop ... read more on Sailing The Web, the ultimate sailboat database
Sailboat data, rig dimensions and recommended sail areas for Sigma 36 (Thomas) sailboat. Tech info about rigging, halyards, sheets, mainsail covers and more.
General Data. Category: Sailing boat; Country: GB; Shipbuilder: Sigma Yachts; Model: Sigma 36; Designer: David Thomas; See also: boats for sale. Bavaria Yachtbau Bavaria 36 Cruiser BENETEAU FIRST 36.7 Dehler 36 SQ Jeanneau SUN ODYSSEY 37 Jeanneau Sun Fast 37 Boat Files General Data. Overall length: 10.97 m; Maximum beam: 3.48 m; Draught: 2 m ...
The 362 was launched in the mid 1980s, with a smaller masthead rig, a new deck moulding and a more conventional two-double cabin interior. Asking prices range from around £27,000 for a lightly equipped 36 up to around £50,000 for a well maintained and equipped 362. See Sigma 36s currently for sale here. The Rustler 36 features a long keel.
If you are a boat enthusiast looking to get more information on specs, built, make, etc. of different boats, then here is a complete review of SIGMA 36 (THOMAS). Built by undefined and designed by David Thomas, the boat was first built in 1979. It has a hull type of Fin w/spade rudder and LOA is 10.97.
SailboatData.com …is a database that contains information on over 9000 production and semi-production sailboats dating back to the late 1800's. COMPARE BOATS To compare up to three boats at one time, click the (+) Remove a compared boat by clicking (-)
1984 Sigma 36. £32,950. boatpoint | Portland, Dorset. Request Info. <. 1. >. * Price displayed is based on today's currency conversion rate of the listed sales price. Boats Group does not guarantee the accuracy of conversion rates and rates may differ than those provided by financial institutions at the time of transaction.
The Sigma 362 is a 36.0ft masthead sloop designed by David Thomas and built in fiberglass since 1983. The Sigma 362 is a moderate weight sailboat which is a reasonably good performer. It is very stable / stiff and has a good righting capability if capsized. It is best suited as a coastal cruiser.
1984 Sigma 36. US$37,821. Ancasta Mylor | Mylor, Falmouth, United Kingdom. Request Info. <. >. 3 listings. Find Sigma 36 boats for sale in your area & across the world on YachtWorld. Offering the best selection of Sigma boats to choose from.
View a wide selection of Sigma 36 boats for sale in your area, explore detailed information & find your next boat on boats.com. #everythingboats Sigma 36 boats for sale - boats.com Explore
S&S design #1710.31. Based on the GAIA CLASS (1965, 19 were built by Benello of Italy.) There were a number of other variants of this particular design including the SIGMA 36 by Cheoy Lee. Originally designed to the RORC handicap rule, the rig was changed in order to rate more favorably under the newly adopted IOR. This was the first 'Swan'.