Ganbare 35
Description
The Ganbare 35 is a classic IOR One Ton class racer-cruiser designed by American naval architect Doug Peterson (his breakthrough design that launched his renowned career in 1973). The original "Ganbare" was a custom-built prototype that finished 2nd at the 1973 One Ton Cup in Sardinia (despite a protest issue), proving exceptionally fast and light for its time—sparking demand for production versions. Built by Cooper Enterprises (later associated with Martin Yachts) in Canada from 1973 onward in fiberglass, with a total of 35 hulls produced (a limited run, making survivors relatively rare today). It features a fin keel with spade rudder, masthead sloop rig, and light displacement for lively, responsive performance—quick acceleration, excellent upwind pointing in a narrow "groove," strong reaching/running, but potentially tender in heavy air (requiring crew on the rail or reefing early due to IOR hull shape influences like a fine bow and flatter garboards for longer effective keel). While race-oriented, many were adapted for cruising with added amenities (e.g., larger tanks, fridge, heater), offering a practical interior (V-berth forward, saloon settees, galley, head, quarter berths sleeping 5–6) and solid build quality.
Construction Details
| Designer | Doug Peterson |
|---|---|
| Builder | Cooper Boatworks Ltd. |
| Length | 35.000 ft |
| LOA | 35.400 ft |
| LWL | 28.500 ft |
| Beam | 11.250 ft |
| Displacement | 13200 lb |
| Ballast | 6500 lb |
| Max Draft | 6.250 ft |
| Year Built | 1973 |
The standard boat dimensions
| i | 47.40 ft |
|---|---|
| j | 14.80 ft |
| p | 41.70 ft |
| e | 13.20 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 47.40 ft | 14.80 ft | 41.70 ft | 13.20 ft | - | - | - | - |
Sails
Ganbare 35 - MAINSAIL
| Luff | * 41.7 ft - (12710 mm) |
|---|---|
| Foot | * 13.2 ft - (4023 mm) |
| Leech | * 43.15 ft - (13152 mm) |
| Tack Angle | * 88.01 ° |
| Diagonal | * 43.3 ft - (13198 mm) |
| Head (inches) | * 6 in - (152 mm) |
| Area | 274.92 ft² |
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Ganbare 35 - JIBSAIL
| Luff | * 39.73 ft - (12110 mm) |
|---|---|
| Foot | * 19.52 ft - (5950 mm) |
| Leech | * 34.63 ft - (10555 mm) |
| Percentage LP | * 115 % |
| Length Perpendicular | * 17.02 ft - (5188 mm) |
| Deck Angle | * 12 ° |
| Area | 337.99 ft² |
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Ganbare 35 - GENOA
| Luff | * 47.17 ft - (14377 mm) |
|---|---|
| Foot | * 23.83 ft - (7263 mm) |
| Leech | * 44.44 ft - (13545 mm) |
| Percentage LP | * 150 % |
| Length Perpendicular | * 22.2 ft - (6767 mm) |
| Deck Angle | * 4 ° |
| Area | 523.51 ft² |
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Ganbare 35 - SPINNAKER
| Stays | * 47.17 ft - (14377 mm) |
|---|---|
| MidGirth | * 26.64 ft - (8120 mm) |
| Foot | * 26.64 ft - (8120 mm) |
| Perc LP | * 180 % |
| Area | 1068.12 ft² |
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Disclaimer. Boats are not all the same -- even when produced in the same factory of the same model. Sailrite does its best to publish accurate dimensions, but we often find it worthwhile to have our customers measure their boats carefully before we produce kits for them. You should take the same precautions, especially when the data is not from Sailrite. The information on this site is not guaranteed to be accurate. Sailrite offers this content as a service to our community, but takes no responsibility for the reliability of the data provided.