Allmand 31
Description
The Allmand 31 is an American coastal cruising sailboat designed by Walter Scott in collaboration with T.R. Allmand, first introduced in 1978 as the Sail 31. It was produced by Allmand Boats Inc., a Florida-based company originally known for powerboats that pivoted to sailboats during the 1970s energy crisis. A variant, the Allmand 312, shares the same hull and deck but features a modified interior layout. With a shoal-draft fin keel and skeg-hung rudder, it's optimized for shallow-water cruising in areas like the Bahamas or Intracoastal Waterway, offering a spacious tri-cabin interior for family use. Production ran until around 1985, with an estimated 100–200 units built before the company ceased operations.
Construction Details
| Designer | Walter Scott |
|---|---|
| Length | 31.000 ft |
| LOA | 30.750 ft |
| LWL | 27.920 ft |
| Beam | 11.330 ft |
| Displacement | 11100 lb |
| Max Draft | 3.830 ft |
The standard boat dimensions
| i | 41 ft |
|---|---|
| j | 12 ft |
| p | 34.40 ft |
| e | 12.50 ft |
| p2 | - |
| e2 | - |
| I | J | P | E | P2 | E2 |
|---|---|---|---|---|---|
| 41 ft | 12 ft | 34.40 ft | 12.50 ft | - | - |
Sails
| Sail Type | MAINSAIL |
|---|---|
| Luff | * 34.4 ft - (10485 mm) |
| Foot | * 12.5 ft - (3810 mm) |
| Leech | * 35.82 ft - (10918 mm) |
| Tack Angle | * 88.01 ° |
| Diagonal | * 36.19 ft - (11031 mm) |
| Head (inches) | * 6 in - (152 mm) |
| Area | * 220.92 ft² |
| Sail Type | JIBSAIL |
|---|---|
| Luff | 34.18 ft - (10418 mm) |
| Foot | * 15.68 ft - (4779 mm) |
| Leech | * 30.09 ft - (9171 mm) |
| Percentage LP | * 115 % |
| Length Perpendicular | * 13.8 ft - (4206 mm) |
| Deck Angle | * 12.02 ° |
| Area | * 235.87 ft² |
| Sail Type | GENOA |
|---|---|
| Luff | 38.75 ft - (11811 mm) |
| Foot | 19.167 ft - (5842 mm) |
| Leech | 36.83 ft - (11226 mm) |
| Percentage LP | * 149.92 % |
| Length Perpendicular | * 17.99 ft - (5483 mm) |
| Deck Angle | * 3.87 ° |
| Area | * 348.56 ft² |
| Sail Type | GENOA |
|---|---|
| Luff | 40.58 ft - (12369 mm) |
| Foot | * 19.19 ft - (5849 mm) |
| Leech | * 38.41 ft - (11707 mm) |
| Percentage LP | * 150 % |
| Length Perpendicular | * 18 ft - (5486 mm) |
| Deck Angle | * 3.96 ° |
| Area | * 365.24 ft² |
| Sail Type | GENOA |
|---|---|
| Luff | 37.67 ft - (11482 mm) |
| Foot | 18.083 ft - (5512 mm) |
| Leech | 35.75 ft - (10897 mm) |
| Percentage LP | * 141.5 % |
| Length Perpendicular | * 16.98 ft - (5176 mm) |
| Deck Angle | * 3.78 ° |
| Area | * 319.87 ft² |
| Sail Type | DRIFTER |
|---|---|
| Luff | 34 ft - (10363 mm) |
| Foot | 12.5 ft - (3810 mm) |
| Leech | 35.75 ft - (10897 mm) |
| Perc LP | * 104.08 % |
| Length Perp | * 12.49 ft - (3807 mm) |
| Deck Angle | * -14 ° |
| Area | * 212.33 ft² |
| Sail Type | DRIFTER |
|---|---|
| Luff | * 40.58 ft - (12369 mm) |
| Foot | * 19.91 ft - (6069 mm) |
| Leech | * 36.78 ft - (11211 mm) |
| Perc LP | * 150 % |
| Length Perp | * 18 ft - (5486 mm) |
| Deck Angle | * 8.98 ° |
| Area | * 365.25 ft² |
| Sail Type | ASYMMETRICAL |
|---|---|
| Luff | 41 ft - (12497 mm) |
| Foot | 20 ft - (6096 mm) |
| Leech | 38 ft - (11582 mm) |
| Perc LP | * 165 % |
| Area | * 615 ft² |
| Sail Type | SPINNAKER |
|---|---|
| Stays | * 40.58 ft - (12369 mm) |
| MidGirth | * 21.6 ft - (6584 mm) |
| Foot | * 21.6 ft - (6584 mm) |
| Perc LP | * 180 % |
| Area | * 745 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.