Grampian SailboatsGrampian Classic 31
Designed by naval architect Peter van Dyne, of Annapolis.
Photos
Specifications on sailboatdata.com
Figures are transcribed from the sailboatdata.com record linked below and may differ from the owners’ figures elsewhere on this page. Metric values are theirs.
| Hull type | Fin keel | Rig | Cutter |
|---|---|---|---|
| L.O.A. | 30.92 ft / 9.42 m | L.W.L. | 22.29 ft / 6.79 m |
| Beam | 8.40 ft / 2.56 m | Draft | 4.40 ft / 1.34 m |
| Displacement | 9,722 lb / 4,410 kg | Sail area (reported) | 440 ft² / 40.88 m² |
| Construction | Fibreglass | First built | 1964 |
| Builder | Grampian Marine Ltd. (Canada) | Designer | Peter Van Dine |
| Engine (original) | Universal Atomic 4 (gas) |
Rig and sail particulars
| I | 33.50 ft / 10.21 m | J | 13.50 ft / 4.11 m |
|---|---|---|---|
| P | 29.50 ft / 8.99 m | E | 14.50 ft / 4.42 m |
| S.A. fore | 226.13 ft² / 21.01 m² | S.A. main | 213.88 ft² / 19.87 m² |
| S.A. total (100% fore + main) | 440.01 ft² / 40.88 m² | S.A. / Displ. (from rig) | 15.51 |
| Est. forestay length | 36.12 ft / 11.01 m |
Calculated ratios
| S.A. / Displ. | 15.51 | Displ. / Length | 391.90 |
|---|---|---|---|
| Comfort ratio | 35.46 | Capsize screening | 1.58 |
| S# | 1.09 | Hull speed | 6.33 kn |
| Pounds / inch immersion | 669.01 |
Source: Grampian Classic 31 — sailboatdata.com. Ratio definitions are on sailboatdata.