San Juan 31
| Length | |
| Hull Type | Fin w/ Rudder on Skeg |
| Rigging Type | Masthead Sloop |
| LOA | 31.00' (9.45m) |
| S.A. | 433.00 sq ft (40.23 m2) |
| Beam | 10.33' (3.15m) |
| Displacement | 9400 lbs / 4264 kgs |
| Ballast | 3750 lbs / 1701 kgs |
| Designer | Bruce Kirby |
| First Built | 1978 |
| Length | |
| Hull Type | Fin w/ Rudder on Skeg |
| Rigging Type | Masthead Sloop |
| LOA | 31.00' (9.45m) |
| S.A. | 433.00 sq ft (40.23 m2) |
| Beam | 10.33' (3.15m) |
| Displacement | 9400 lbs / 4264 kgs |
| Ballast | 3750 lbs / 1701 kgs |
| Designer | Bruce Kirby |
| First Built | 1978 |