The Allmand 31 is a 30.75ft masthead sloop designed by Walter Scott & T. R. Allmand and built in fiberglass by Allmand Boats Inc.(USA) between 1978 and 1985.
The Allmand 31 is a moderate weight sailboat which is slightly under powered. It is stable / stiff and has a low righting capability if capsized. It is best suited as a coastal cruiser. The fuel capacity is originally small. There is a short water supply range.
Main features
| Model | Allmand 31 | ||
| Length | 30.75 ft | ||
| Beam | 11.33 ft | ||
| Draft | 3.83 ft | ||
| Country | United states (North America) | ||
| Estimated price | $ 0 | ?? | 
Ratios
| Sail area / displ. | 14.87 | ||
| Ballast / displ. | 38.74 % | ||
| Displ. / length | 227.68 | ||
| Comfort ratio | 23.52 | ||
| Capsize | 2.04 | 
Hull
| Hull type | Monohull fin keel with rudder on skeg | ||
| Construction | Fiberglass | ||
| Waterline length | 27.92 ft | ||
| Maximum draft | 3.83 ft | ||
| Displacement | 11100 lbs | ||
| Ballast | 4300 lbs | ||
| Hull speed | 7.08 knots | 
Rigging
| Rigging | Masthead Sloop | ||
| Sail area (100%) | 461 sq.ft | ||
| Air draft | 0 ft | ?? | |
| Sail area fore | 246 sq.ft | ||
| Sail area main | 215 sq.ft | ||
| I | 41 ft | ||
| J | 12 ft | ||
| P | 34.40 ft | ||
| E | 12.50 ft | 
Engine
| Nb engines | 1 | ||
| Total power | 0 HP | ||
| Fuel capacity | 28 gals | 
Accommodations
| Water capacity | 40 gals | ||
| Headroom | 0 ft | ||
| Nb of cabins | 0 | ||
| Nb of berths | 0 | ||
| Nb heads | 0 | 
Builder data
| Builder | Allmand Boats Inc.(USA) | ||
| Designer | Walter Scott & T. R. Allmand | ||
| First built | 1978 | ||
| Last built | 1985 | ||
| Number built | 0 | ?? | 
 
                         
                                                     
                                     
                                         
                                         
                                         
                                         
                                         
                                        