Yamaha 31 S
Description
The Yamaha 31 S (also known as Yamaha 31S or sometimes grouped with the 31 S Ltd) is a Japanese-built fiberglass coastal cruiser from the late 1980s–early 1990s, produced by Yamaha Marine. It was designed with an emphasis on quality construction, responsive sailing, and comfortable accommodations for its size. The "S" designation typically indicates a sport or taller-rig version, optimized for better light-air performance compared to any standard or "EX" variants in the 31-foot line.
Construction Details
| Designer | In House Design |
|---|---|
| Builder | Yamaha Marine (Japan) |
| Length | 31.000 ft |
| LOA | 31.170 ft |
| LWL | 25.920 ft |
| Beam | 10.630 ft |
| Displacement | 6945 lb |
| Ballast | 2601 lb |
| Max Draft | 6.170 ft |
| Year Built | 1981 |
The standard boat dimensions
| i | 37.40 ft |
|---|---|
| j | 11.06 ft |
| p | 39.04 ft |
| e | 14.24 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 37.40 ft | 11.06 ft | 39.04 ft | 14.24 ft | - | - | - | - |
Sails
Yamaha 31 S - MAINSAIL
| Luff | * 39.04 ft - (11899 mm) |
|---|---|
| Foot | * 14.24 ft - (4340 mm) |
| Leech | * 40.96 ft - (12485 mm) |
| Tack Angle | * 88 ° |
| Diagonal | * 41.09 ft - (12524 mm) |
| Head (inches) | * 4.5 in - (114 mm) |
| Area | * 285.022 ft² |
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Yamaha 31 S - JIBSAIL
| Luff | * 31.2 ft - (9510 mm) |
|---|---|
| Foot | * 14.47 ft - (4410 mm) |
| Leech | * 27.43 ft - (8361 mm) |
| Percentage LP | * 115 % |
| Length Perpendicular | * 12.72 ft - (3877 mm) |
| Deck Angle | * 12 ° |
| Area | * 198.43 ft² |
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Yamaha 31 S - GENOA
| Luff | * 37.05 ft - (11293 mm) |
|---|---|
| Foot | * 17.71 ft - (5398 mm) |
| Leech | * 35.03 ft - (10677 mm) |
| Percentage LP | * 150 % |
| Length Perpendicular | * 16.59 ft - (5057 mm) |
| Deck Angle | * 4 ° |
| Area | * 307.33 ft² |
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Yamaha 31 S - ASYMMETRICAL
| Luff | * 37.05 ft - (11293 mm) |
|---|---|
| Foot | * 18.25 ft - (5563 mm) |
| Leech | * 34.09 ft - (10391 mm) |
| Perc LP | * 165 % |
| Area | * 507.12 ft² |
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Yamaha 31 S - SPINNAKER
| Stays | * 37.05 ft - (11293 mm) |
|---|---|
| MidGirth | * 19.91 ft - (6069 mm) |
| Foot | * 19.91 ft - (6069 mm) |
| Perc LP | * 180 % |
| Area | * 627 ft² |
| Edit in Calculator |
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.
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