J/40
Description
The J/40 is a performance cruiser designed by Rod Johnstone. This substantial yacht offers spacious accommodations and excellent seakeeping, Her generous sail plan delivers excellent light-air performance. A true blue water cruiser capable of comfortable ocean passages.
Construction Details
| Designer | Rod Johnstone |
|---|---|
| Length | 40.000 ft |
| LOA | 40.000 ft |
| LWL | 34.000 ft |
| Beam | 12.170 ft |
| Displacement | 18000 lb |
| Max Draft | 6.500 ft |
The standard boat dimensions
| i | 50 ft |
|---|---|
| j | 14.70 ft |
| p | 44.20 ft |
| e | 18 ft |
| p2 | - |
| e2 | - |
| I | J | P | E | P2 | E2 |
|---|---|---|---|---|---|
| 50 ft | 14.70 ft | 44.20 ft | 18 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 | MAINSAIL |
|---|---|
| Luff | * 44.2 ft - (13472 mm) |
| Foot | * 18 ft - (5486 mm) |
| Leech | * 46.86 ft - (14283 mm) |
| Tack Angle | * 88 ° |
| Diagonal | * 47.14 ft - (14368 mm) |
| Head (inches) | * 6 in - (152 mm) |
| Area | * 407.29 ft² |
| Sail Type | JIBSAIL |
|---|---|
| Luff | * 41.69 ft - (12707 mm) |
| Foot | * 19.21 ft - (5855 mm) |
| Leech | * 36.68 ft - (11180 mm) |
| Percentage LP | * 114.97 % |
| Length Perpendicular | * 16.9 ft - (5151 mm) |
| Deck Angle | * 12.01 ° |
| Area | * 352.26 ft² |
| Sail Type | GENOA |
|---|---|
| Luff | * 49.51 ft - (15091 mm) |
| Foot | * 23.52 ft - (7169 mm) |
| Leech | * 46.84 ft - (14277 mm) |
| Percentage LP | * 150 % |
| Length Perpendicular | * 22.05 ft - (6721 mm) |
| Deck Angle | * 3.98 ° |
| Area | * 545.85 ft² |
| Sail Type | DRIFTER |
|---|---|
| Luff | 46 ft - (14021 mm) |
| Foot | 20 ft - (6096 mm) |
| Leech | 40 ft - (12192 mm) |
| Perc LP | * 118.03 % |
| Length Perp | * 17.35 ft - (5288 mm) |
| Deck Angle | * 13.47 ° |
| Area | * 398.95 ft² |
| Sail Type | ASYMMETRICAL |
|---|---|
| Luff | * 49.51 ft - (15091 mm) |
| Foot | * 24.26 ft - (7394 mm) |
| Leech | * 45.55 ft - (13884 mm) |
| Perc LP | * 165 % |
| Area | * 901 ft² |
| Sail Type | SPINNAKER |
|---|---|
| Stays | * 49.51 ft - (15091 mm) |
| MidGirth | * 26.46 ft - (8065 mm) |
| Foot | * 26.46 ft - (8065 mm) |
| Perc LP | * 180 % |
| Area | * 1114 ft² |
| Sail Type | STORMJIB |
|---|---|
| Luff | 27 ft - (8230 mm) |
| Foot | 11.4 ft - (3475 mm) |
| Leech | 20 ft - (6096 mm) |
| Perc LP | * 51.7 % |
| Length Perp | * 7.6 ft - (2316 mm) |
| Deck Angle | * 31.82 ° |
| Area | * 102.57 ft² |
| Sail Type | STORMJIB |
|---|---|
| Luff | * 28.66 ft - (8736 mm) |
| Foot | * 10.82 ft - (3298 mm) |
| Leech | * 24.07 ft - (7337 mm) |
| Perc LP | * 60 % |
| Length Perp | * 8.82 ft - (2688 mm) |
| Deck Angle | * 19 ° |
| Area | * 126.42 ft² |
| Sail Type | STORMTRYSAIL |
|---|---|
| Luff | * 18.25 ft - (5563 mm) |
| Foot | * 16.78 ft - (5115 mm) |
| Leech | * 15.21 ft - (4636 mm) |
| Length Perp | * 15.21 ft - (4636 mm) |
| Tack Angle | * -25 ° |
| Area | * 119 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.