J Boats J/31
| Length | |
| Hull Type | Fin w/ Spade Rudder |
| Rigging Type | Masthead Sloop |
| LOA | 31.27' (9.53m) |
| S.A. | 445.00 sq ft (41.34 m2) |
| Beam | 11.00' (3.35m) |
| Displacement | 8000 lbs / 3629 kgs |
| Ballast | 3100 lbs / 1406 kgs |
| Designer | Rod Johnstone |
| First Built | 1985 |
| Length | |
| Hull Type | Fin w/ Spade Rudder |
| Rigging Type | Masthead Sloop |
| LOA | 31.27' (9.53m) |
| S.A. | 445.00 sq ft (41.34 m2) |
| Beam | 11.00' (3.35m) |
| Displacement | 8000 lbs / 3629 kgs |
| Ballast | 3100 lbs / 1406 kgs |
| Designer | Rod Johnstone |
| First Built | 1985 |