Aquadyne Sailbird 18 Tri
Description
The Aquadyne Sailbird 18 Tri (built ~ 1971–1979 by Aquadyne Corp., Virginia) is a lightweight 18‑foot fiberglass trimaran designed for ease of transport and lively performance under a small fractional rig. With a total sail area of about 150 sq ft, it planes readily in moderate winds and remains one of the pioneering U.S. trailer‑multihulls that introduced recreational sailors to trimaran speed in a compact, affordable package.
Construction Details
| Designer | In House Design |
|---|---|
| Builder | Aquadyne Corp., Virginia |
| Length | 18.000 ft |
| LOA | 18.000 ft |
| Beam | 12.000 ft |
| Displacement | 475 lb |
| Max Draft | 2.500 ft |
| Min Draft | 0.670 ft |
| Year Built | 1971 |
The standard boat dimensions
| i | 16 ft |
|---|---|
| j | 5 ft |
| p | 18 ft |
| e | 8 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 16 ft | 5 ft | 18 ft | 8 ft | - | - | - | - |
Sails
Aquadyne Sailbird 18 Tri - MAINSAIL
| Luff | 20.67 ft - (6300 mm) |
|---|---|
| Foot | 9 ft - (2743 mm) |
| Leech | * 22.22 ft - (6773 mm) |
| Tack Angle | * 89.69 ° |
| Diagonal | 22.5 ft - (6858 mm) |
| Head (inches) | 6 in - (152 mm) |
| Area | * 97.64 ft² |
| Edit in Calculator | |
Aquadyne Sailbird 18 Tri - JIBSAIL
| Luff | 14.5 ft - (4420 mm) |
|---|---|
| Foot | 8 ft - (2438 mm) |
| Leech | 13 ft - (3962 mm) |
| Deck Angle | * 8.18 ° |
| Area | * 51.69 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.