Farrier Trailertri 680
Description
The Farrier Trailertri 680 (often just called Trailertri 680 or TrailerTri 680) is one of Ian Farrier's early folding trimaran designs, developed in the late 1970s as an evolution of his pioneering Trailertri series. Plans were copyrighted in 1977, with the first builds around 1977–1978 (prototype elements from earlier Trailertri experiments in 1974–1976). It's a plywood (often glass-sheathed) amateur-build cruiser-racer emphasizing easy trailering, shallow draft, and good performance for coastal/day sailing or light offshore use—Farrier's "folding system" (early version, no hinges in beams) allows the amas (floats) to fold inward, reducing beam to ~8 ft (2.44 m) for road-legal trailering and storage. This design was hugely influential—many were home-built (especially in Australia/NZ/UK), and it paved the way for Farrier's later production models like the Tramp (1980, Australian Boat of the Year) and fiberglass F-series (F-27, etc.). It's still sailed today, with owner groups (e.g., Facebook's Farrier Trimaran 680 & 720 owners) sharing tips, spares, and mods. Active in classic multihull events or as pocket cruisers.
Construction Details
| Designer | Ian Farrier |
|---|---|
| Builder | Home Built |
| Length | 22.310 ft |
| LOA | 22.310 ft |
| LWL | 20.440 ft |
| Beam | 16.340 ft |
| Displacement | 2513 lb |
| Max Draft | 4.270 ft |
| Min Draft | 1.410 ft |
| Year Built | 1977 |
The standard boat dimensions
| i | 22.33 ft |
|---|---|
| j | 8.50 ft |
| p | 25.75 ft |
| e | 8.75 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 22.33 ft | 8.50 ft | 25.75 ft | 8.75 ft | - | - | - | - |
Sails
Farrier Trailertri 680 - MAINSAIL
| Luff | * 25.75 ft - (7849 mm) |
|---|---|
| Foot | * 8.75 ft - (2667 mm) |
| Leech | * 26.73 ft - (8147 mm) |
| Tack Angle | * 88 ° |
| Diagonal | * 26.91 ft - (8202 mm) |
| Head (inches) | * 4 in - (102 mm) |
| Area | * 116.35 ft² |
| Edit in Calculator |
Farrier Trailertri 680 - JIBSAIL
| Luff | 23 ft - (7010 mm) |
|---|---|
| Foot | 11.5 ft - (3505 mm) |
| Leech | 20 ft - (6096 mm) |
| Percentage LP | * 117.65 % |
| Length Perpendicular | * 10 ft - (3048 mm) |
| Deck Angle | * 8.75 ° |
| Area | * 115 ft² |
| Edit in Calculator |
Farrier Trailertri 680 - GENOA
| Luff | * 22.7 ft - (6919 mm) |
|---|---|
| Foot | * 14.05 ft - (4282 mm) |
| Leech | * 21.09 ft - (6428 mm) |
| Percentage LP | * 150 % |
| Length Perpendicular | * 12.75 ft - (3886 mm) |
| Deck Angle | * 3.99 ° |
| Area | * 144.72 ft² |
| Edit in Calculator |
Farrier Trailertri 680 - DRIFTER
| Luff | 28 ft - (8534 mm) |
|---|---|
| Foot | 24 ft - (7315 mm) |
| Leech | 26 ft - (7925 mm) |
| Perc LP | * 243.06 % |
| Length Perp | * 20.66 ft - (6297 mm) |
| Deck Angle | * 9.75 ° |
| Area | * 289.23 ft² |
| Edit in Calculator |
Farrier Trailertri 680 - ASYMMETRICAL
| Luff | * 22.7 ft - (6919 mm) |
|---|---|
| Foot | * 14.02 ft - (4273 mm) |
| Leech | * 20.88 ft - (6364 mm) |
| Perc LP | * 165 % |
| Area | * 239 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
