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 | 35.250 ft |
| LWL | 26.250 ft |
| Beam | 11.000 ft |
| Displacement | 13450 lb |
The standard boat dimensions
| i | 37.63 ft |
|---|---|
| j | 11.12 ft |
| p | 39.27 ft |
| e | 14.31 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 37.63 ft | 11.12 ft | 39.27 ft | 14.31 ft | - | - | - | - |
Sails
Yamaha 31 S - MAINSAIL
| Luff | * 39.27 ft - (11969 mm) |
|---|---|
| Foot | * 14.31 ft - (4362 mm) |
| Leech | * 41.15 ft - (12543 mm) |
| Tack Angle | * 87.98 ° |
| Diagonal | * 41.32 ft - (12594 mm) |
| Head (inches) | * 6 in - (152 mm) |
| Area | 280.66 ft² |
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Yamaha 31 S - JIBSAIL
| Luff | * 31.39 ft - (9568 mm) |
|---|---|
| Foot | * 14.55 ft - (4435 mm) |
| Leech | * 27.6 ft - (8412 mm) |
| Percentage LP | * 115 % |
| Length Perpendicular | * 12.79 ft - (3898 mm) |
| Deck Angle | * 12 ° |
| Area | 200.77 ft² |
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Yamaha 31 S - GENOA
| Luff | * 37.28 ft - (11363 mm) |
|---|---|
| Foot | * 17.8 ft - (5425 mm) |
| Leech | * 35.25 ft - (10744 mm) |
| Percentage LP | * 150 % |
| Length Perpendicular | * 16.68 ft - (5084 mm) |
| Deck Angle | * 4 ° |
| Area | 310.85 ft² |
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Yamaha 31 S - SPINNAKER
| Stays | * 37.28 ft - (11363 mm) |
|---|---|
| MidGirth | * 20.02 ft - (6102 mm) |
| Foot | * 20.02 ft - (6102 mm) |
| Perc LP | * 180 % |
| Area | 634.39 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.
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