DUFOUR 31
Description
Introduced in 1975. 8360 lbs. Disp. 3630 lbs. Ballast 25'3" LWL 10'8" Beam 5'6" Draft deep 4'5" Draft shoal
Construction Details
| Designer | German Frers |
|---|---|
| Length | 30.500 ft |
| LOA | 30.830 ft |
| LWL | 23.000 ft |
| Beam | 10.500 ft |
| Displacement | 9600 lb |
| Max Draft | 5.670 ft |
The standard boat dimensions
| i | 38.71 ft |
|---|---|
| j | 11.97 ft |
| p | 33.30 ft |
| e | 10.17 ft |
| p2 | - |
| e2 | - |
| I | J | P | E | P2 | E2 |
|---|---|---|---|---|---|
| 38.71 ft | 11.97 ft | 33.30 ft | 10.17 ft | - | - |
Sails
An asterisk indicates that a computer algorithm was used to determine the dimension based on sailboat rig dimensions (usually the I, J, E, and P)
| Sail Type | GENOA |
|---|---|
| Luff | 37.75 ft - (11506 mm) |
| Foot | 19.75 ft - (6020 mm) |
| Leech | 36 ft - (10973 mm) |
| Percentage LP | * 154.64 % |
| Length Perpendicular | * 18.51 ft - (5642 mm) |
| Deck Angle | * 3.19 ° |
| Area | * 349.46 ft² |
| Sail Type | JIBSAIL |
|---|---|
| Luff | 36.75 ft - (11201 mm) |
| Foot | 14.25 ft - (4343 mm) |
| Leech | 34 ft - (10363 mm) |
| Percentage LP | * 110.11 % |
| Length Perpendicular | * 13.18 ft - (4017 mm) |
| Deck Angle | * 5.13 ° |
| Area | * 242.24 ft² |
| Sail Type | ASYMMETRICAL |
|---|---|
| Luff | 39 ft - (11887 mm) |
| Foot | 20 ft - (6096 mm) |
| Leech | 37 ft - (11278 mm) |
| Perc LP | * 165 |
| Area | * 585 ft² |
| Sail Type | STORMJIB |
|---|---|
| Luff | * 22.29 ft - (6794 mm) |
| Foot | * 8.9 ft - (2713 mm) |
| Leech | * 18.48 ft - (5633 mm) |
| Perc LP | * 59.98 |
| Length Perp | * 7.18 |
| Deck Angle | * 19.06 ° |
| Area | * 80 ft² |
| Sail Type | MAINSAIL |
|---|---|
| Luff | * 33.3 ft - (10150 mm) |
| Foot | * 10.17 ft - (3100 mm) |
| Leech-AftHdBd | * 34.28 ft - (10449 mm) |
| Tack Ang | * 88 ° |
| Diag (clew/head) | * 34.48 ft - (10510 mm) |
| Head (inches) | * 4.5 in |
| Area (no Roach) | * 174.68 ft² |
| Sail Type | GENOA |
|---|---|
| Luff | * 38.49 ft - (11732 mm) |
| Foot | * 19.26 ft - (5870 mm) |
| Leech | * 36.29 ft - (11061 mm) |
| Percentage LP | * 150.04 % |
| Length Perpendicular | * 17.96 ft - (5474 mm) |
| Deck Angle | * 3.99 ° |
| Area | * 345.64 ft² |
| Sail Type | JIBSAIL |
|---|---|
| Luff | * 32.41 ft - (9879 mm) |
| Foot | * 15.77 ft - (4807 mm) |
| Leech | * 28.3 ft - (8626 mm) |
| Percentage LP | * 115.04 % |
| Length Perpendicular | * 13.77 ft - (4197 mm) |
| Deck Angle | * 11.99 ° |
| Area | * 223.15 ft² |
| Sail Type | SPINNAKER |
|---|---|
| Stays | * 38.49 |
| MidGirth | * 21.55 ft - (6568 mm) |
| Foot | * 21.55 ft - (6568 mm) |
| Perc LP | * 180 |
| Area | * 705 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.