Alpa A9
Description
The Alpa A9 is a sailboat designed by the maritime architect bureau Illingworth & Associates in the mid sixties. The Alpa A9 is built by the Italian yard Alpa Cantieri.
Construction Details
| Designer | John Illingworth |
|---|---|
| LOA | 29.820 ft |
| LWL | 21.980 ft |
| Beam | 8.860 ft |
| Displacement | 8598 lb |
| Ballast | 3638 lb |
| Max Draft | 5.250 ft |
The standard boat dimensions
| i | 36.02 ft |
|---|---|
| j | 10 ft |
| p | 31.10 ft |
| e | 11.15 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 36.02 ft | 10 ft | 31.10 ft | 11.15 ft | - | - | - | - |
Sails
| Sail Type | MAINSAIL |
|---|---|
| Luff | * 31.1 ft - (9479 mm) |
| Foot | * 11.15 ft - (3399 mm) |
| Leech | * 32.54 ft - (9918 mm) |
| Tack Angle | * 88 ° |
| Diagonal | * 32.67 ft - (9958 mm) |
| Head (inches) | * 4.5 in - (114 mm) |
| Area | * 179.035 ft² |
| Sail Type | JIBSAIL |
|---|---|
| Luff | * 29.9 ft - (9114 mm) |
| Foot | * 12.97 ft - (3953 mm) |
| Leech | * 26.53 ft - (8086 mm) |
| Percentage LP | * 115 % |
| Length Perpendicular | * 11.5 ft - (3505 mm) |
| Deck Angle | * 12 ° |
| Area | * 171.96 ft² |
| Sail Type | GENOA |
|---|---|
| Luff | * 35.51 ft - (10823 mm) |
| Foot | * 15.91 ft - (4849 mm) |
| Leech | * 33.73 ft - (10281 mm) |
| Percentage LP | * 150 % |
| Length Perpendicular | * 15 ft - (4572 mm) |
| Deck Angle | * 4 ° |
| Area | * 266.35 ft² |
| Sail Type | ASYMMETRICAL |
|---|---|
| Luff | * 35.51 ft - (10823 mm) |
| Foot | * 16.5 ft - (5029 mm) |
| Leech | * 32.67 ft - (9958 mm) |
| Perc LP | * 165 % |
| Area | * 439.44 ft² |
| Sail Type | SPINNAKER |
|---|---|
| Stays | * 35.51 ft - (10823 mm) |
| MidGirth | * 18 ft - (5486 mm) |
| Foot | * 18 ft - (5486 mm) |
| Perc LP | * 180 % |
| Area | * 543 ft² |
| Sail Type | STORMJIB |
|---|---|
| Luff | * 20.56 ft - (6267 mm) |
| Foot | * 7.28 ft - (2219 mm) |
| Leech | * 17.5 ft - (5334 mm) |
| Perc LP | * 60 % |
| Length Perp | * 6 ft - (1829 mm) |
| Deck Angle | * 19 ° |
| Area | * 61.69 ft² |
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.