Westerly Tempest 31 Fin Keel
| Length | |
| Hull Type | Fin w/ Transom Hung Rudder |
| Rigging Type | Masthead Sloop |
| LOA | 30.84' (9.40m) |
| S.A. | 507.00 sq ft (47.10 m2) |
| Beam | 10.50' (3.20m) |
| Displacement | 9700 lbs / 4400 kgs |
| Ballast | 3748 lbs / 1700 kgs |
| Designer | Ed Dubois |
| First Built | 1987 |