Yamaha 23 III EX
Description
The Yamaha 23 III EX is a compact Japanese-built fiberglass sailboat, essentially a variant or refined version of the Yamaha 23 III (also known as Y-23 III). Like other small Yamaha sailboats from the late 1980s–early 1990s era, it was produced during Yamaha Marine's limited sailboat manufacturing period, primarily for the domestic Japanese market or select exports. These boats emphasize solid, quality construction with practical details, though documentation in English sources remains sparse compared to Yamaha's better-known larger models (like the 30 you asked about earlier). The "EX" designation likely indicates an enhanced or export-oriented variant (common in Japanese branding for upgraded features, rigging, or fit-out), but core dimensions and rig closely match the standard Yamaha 23 III.
Construction Details
| Designer | In House Design |
|---|---|
| Builder | Yamaha Marine (Japan) |
| Length | 23.000 ft |
| LOA | 23.000 ft |
The standard boat dimensions
| i | 25.76 ft |
|---|---|
| j | 8.10 ft |
| p | 27.07 ft |
| e | 10.89 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 25.76 ft | 8.10 ft | 27.07 ft | 10.89 ft | - | - | - | - |
Sails
Yamaha 23 III EX - MAINSAIL
| Luff | * 27.07 ft - (8251 mm) |
|---|---|
| Foot | * 10.89 ft - (3319 mm) |
| Leech | * 28.61 ft - (8720 mm) |
| Tack Angle | * 88 ° |
| Diagonal | * 28.82 ft - (8784 mm) |
| Head (inches) | * 4.5 in - (114 mm) |
| Area | * 151.76 ft² |
| Edit in Calculator |
Yamaha 23 III EX - JIBSAIL
| Luff | * 21.6 ft - (6584 mm) |
|---|---|
| Foot | * 10.7 ft - (3261 mm) |
| Leech | * 18.81 ft - (5733 mm) |
| Percentage LP | * 115.06 % |
| Length Perpendicular | * 9.32 ft - (2841 mm) |
| Deck Angle | * 11.99 ° |
| Area | * 100.63 ft² |
| Edit in Calculator |
Yamaha 23 III EX - GENOA
| Luff | * 25.65 ft - (7818 mm) |
|---|---|
| Foot | * 13.05 ft - (3978 mm) |
| Leech | * 24.14 ft - (7358 mm) |
| Percentage LP | * 149.88 % |
| Length Perpendicular | * 12.14 ft - (3700 mm) |
| Deck Angle | * 4.06 ° |
| Area | * 155.71 ft² |
| Edit in Calculator |
Yamaha 23 III EX - ASYMMETRICAL
| Luff | * 25.65 ft - (7818 mm) |
|---|---|
| Foot | * 13.36 ft - (4072 mm) |
| Leech | * 23.6 ft - (7193 mm) |
| Perc LP | * 165 % |
| Area | * 257 ft² |
| Edit in Calculator |
Yamaha 23 III EX - SPINNAKER
| Stays | * 25.65 ft - (7818 mm) |
|---|---|
| MidGirth | * 14.58 ft - (4444 mm) |
| Foot | * 14.58 ft - (4444 mm) |
| Perc LP | * 180 % |
| Area | * 318 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.
Comments
