Westerly Medway
| Length | |
| Hull Type | Fin w/ Rudder on Skeg |
| Rigging Type | Masthead Sloop |
| LOA | 36.00' (10.97m) |
| S.A. | 553.00 sq ft (51.38 m2) |
| Beam | 9.50' (2.90m) |
| Displacement | 14362 lbs / 6516 kgs |
| Ballast | 6000 lbs / 2722 kgs |
| Designer | John Butler |
| First Built | 1965 |