THE F16 WAS FOUNDED IN 2001 AND THERE ARE NOW A NUMBER OF FULLY OPTIMISED DESIGNS. LEARN MORE ABOUT THE BOATS. FIND OUT WHAT'S HAPPENING ON THE CALENDAR OR THROUGH YOUR CLASS ASSOCIATION.
Designer: hans geissler.
Manufacturer : G-Cat Mulitihulls, LLC
The G-cat line of beach catamarans is well known to the older generation of cat sailors among us. These boat have always been boardless, but they were considered very fast just the same. During the last decade the G-cat line moved out of view but the company is planning a full come-back ! And the new F16 model is the first to arrive at the market place.
The stirdy boardless design is especially attractive to recreational sailors who seek high performance combined with practical family use. The hull shape is unique in the way that it has alot of rocker and reaches deep in the water to give the boat good upwind performance. With this setup the boat is expected to do well in competitive F16 class racing.
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- Sailboat Guide
G-Cat 5.0 is a 16 ′ 8 ″ / 5.1 m catamaran sailboat designed by Hans Geisler and built by G-Cat oultihulls starting in 1975.
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)
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Engineering:G-Cat 5.0
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The G-Cat 5.0 is an American catamaran sailing dinghy that was designed by Hans Geissler as a one-design racer and first built in 1975. [1] [2]
The G-Cat 5.0 design was developed into the slightly longer G-Cat 5.7 in 1980. [1] [3]
- 1 Production
- 3 Operational history
- 5 References
The design was built by G-Cat Multihulls in Saint Petersburg, Florida, United States , but it is now out of production. The company produced over 2,000 examples of the 5.0 and the 5.7 combined. [1] [2] [4]
The G-Cat 5.0 is a recreational sailboat , built predominantly of fiberglass . It has a fractional sloop rig with a fully battened mainsail , a rotating mast and all- aluminum spars. The symmetrical hulls have raked stems, vertical transoms and transom-hung, kick-up rudders controlled by a tiller . The boat has a trampoline for the crew, with an optional second one forward of the mast that can be used as the base for a tent for overnight accommodation. The design has no centerboards or daggerboards, relying instead on deep V-shaped hulls with a rockered shape to prevent leeway . The boat displaces 340 lb (154 kg). [1] [2]
The boat has a draft of 1.08 ft (0.33 m), allowing beaching or ground transportation on a trailer . [1]
For sailing the design is equipped with a outhaul , downhaul and a mainsheet traveler that is mounted on the aft crossbeam. [2]
The design has a Portsmouth Yardstick racing average handicap of 76.0 and is normally raced with a crew of two sailors . [2]
Operational history
In a 1994 review Richard Sherwood wrote that the "G-Cat is an unusual catamaran with symmetrical hulls and without daggerboards. Also unusual is the trampoline forward of the mast, upon which an optional tent may be pitched for cruising, (To avoid pitch-poling, remove the forward trampoline in heavy weather.) The hulls are a deep vee section to resist leeway. The boat has substantial rocker that puts lateral resistance well below the center of effort, making the boat pivot easily about the middle." [2]
- List of sailing boat types
- List of multihulls
Related development
- ↑ 1.0 1.1 1.2 1.3 1.4 McArthur, Bruce (2020). "G-Cat 5.0 sailboat" . sailboatdata.com . https://sailboatdata.com/sailboat/g-cat-50 .
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Sherwood, Richard M.: A Field Guide to Sailboats of North America, Second Edition , pages 78-79. Houghton Mifflin Company, 1994. ISBN :0-395-65239-1
- ↑ McArthur, Bruce (2020). "G-Cat 5.7 sailboat" . sailboatdata.com . https://sailboatdata.com/sailboat/g-cat-57 .
- ↑ McArthur, Bruce (2020). "G-Cat Multihulls" . sailboatdata.com . https://sailboatdata.com/builder/g-cat-multihulls .
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The G-Cat 5.0 is an American catamaran sailing dinghy that was designed by Hans Geissler as a one-design racer and first built in 1975. The G-Cat 5.0 design was developed into the slightly longer G-Cat 5.7 in 1980. Production. The design ...
LENGTH: Traditionally, LOA (length over all) equaled hull length. Today, many builders use LOA to include rail overhangs, bowsprits, etc. and LOD (length on deck) for hull length. That said, LOA may still mean LOD if the builder is being honest and using accepted industry standards developed by groups like the ABYC (American Boat and Yacht Council).
U.S.Sailing's portsmouth #'s list G Cat 5.7 as 73.2, H-18 71.4 & Nacra 5.2 72.1 indicating G Cat as slower. There are variations for different wind conditions, but it is slower in all variations. Pete.
At the RACE AGAINST HUNGER at Dunedin Causeway, Florida. The Regatta stages from April 21st - 23rd, and will the kick-off introduction of the G-Cat 16ft and the G-Cat 36, most likely the Power Cat 36 version. Morning Star Fishermen, Inc. will be hosting this Fundraising Regatta for all classes of Catamarans and Mono Hull Sailboats.
GCat preowned sailboats for sale by owner. GCat used sailboats for sale by owner.
The G-cat line of beach catamarans is well known to the older generation of cat sailors among us. These boat have always been boardless, but they were considered very fast just the same. During the last decade the G-cat line moved out of view but the company is planning a full come-back ! And the new F16 model is the first to arrive at the ...
G-Cat Multihulls. Founded by Hans Geissler, owner of a catamaran dealership in St. Peterburg, FL USA, who decided to design and build his own line of multihulls. More than 2000 G-Cats have been built. Years in Business: 1975 - present.
About five minutes of solo sailing a G-Cat 5.7 just south of the Dunedin Causeway in Florida.Please like us on Facebook:https://www.facebook.com/CatriderTV/F...
G-Cat Owners and Enthusiast's. 490 likes · 1 talking about this. Welcome to G-Cat Owners and Enthusiasts. A Place created by Hans Geissler, Founder and designer of G-Cat to share info, tips and stories
Founded by Hans Geissler, owner of a catamaran dealership in St. Peterburg, FL USA, who decided to design and build his own line of multihulls. More than 2000 G-Cats have been built. Email: [email protected]. Great choice! Your favorites are temporarily saved for this session. ... G-Cat 5.7. 1980 • 18 ...
G-Cat 5.0 is a 16′ 8″ / 5.1 m catamaran sailboat designed by Hans Geisler and built by G-Cat oultihulls starting in 1975. Great choice! Your favorites are temporarily saved for this session.
Video shot as "notes" while I showed the new owners how to rig my 5.7 meter G-Cat catamaran. These are not complete, and there are other quirks of the boat ...
Saturday April 6th 2019 G-Cat setup on Dunedin Causeway.Please like us on Facebook:https://www.facebook.com/CatriderTV/Follow us on Twitter:https://twitter.c...
GCat Catamaran 5.7 meter/ 18 foot, 1983 Trailer: ShoreLander galvanized trailer with brand new tires, working lights, and is included in the price. ... Includes two hiking trapeze wires per side with three "G-Cat" hiking harnesses. I do have the title for this boat. Hi Alison, Thank you for posting our boat for sale. It sold in about 3 weeks ...
The G-Cat 5.0 is an American catamaran sailing dinghy that was designed by Hans Geissler as a one-design racer and first built in 1975.. The G-Cat 5.0 design was developed into the slightly longer G-Cat 5.7 in 1980.
just a place for G-Cat owners to share their knowledge of G-Cat catamarans. Selling and buying parts (G-Cat parts or parts that can help get a G-Cat back on the water) is ok in this group.
The New 36' G-Cat PowerCat Catamaranwww.g-catmultihulls.comHans Geissler352-206-1999
Catamaran G-Cat 36 boats for sale 1 Boats Available. Currency $ - USD - US Dollar Sort Sort Order List View Gallery View Submit. Advertisement. Save This Boat. Catamaran G-Cat 36 . New Port Richey, Florida. 2008. $59,995 Seller Landmark Yacht Sales 30. 1. Contact. 813-714-7784. ×. Advertisement. Request Information. Contact Seller ...
Find 1 Catamaran G Cat 36 Boats boats for sale near you, including boat prices, photos, and more. For sale by owner, boat dealers and manufacturers - find your boat at Boat Trader!
Catamaran sailing repair tips, pictures, forums and classified ads catamarans for sale by owner Hobie, Nacra, AHPC, Solcat, Aqua Cat for sale. Home; Forums ++ ... G-Cat 5.7 Pictures, specs, and manuals for Gcat 5.7 Date: 11/04/2010 Owner: havliii Size: 12 items (29 items total) Views: 7246 G-Cat 6.1 20 foot G-Cat
GCat Multihulls preowned sailboats for sale by owner. GCat Multihulls used sailboats for sale by owner.
What Catamaran model is the best? Some of the best-known Catamaran models currently listed include: Diamond Yachts P55 Power Catamaran, 24, 38, Axcell 650 and Bamba 50. Specialized yacht brokers, dealers, and brokerages on YachtWorld have a diverse selection of Catamaran models for sale, with listings spanning from 1987 year models to 2025.