Cal 31 - Sailboat Data & Rig Dimensions
| Rig Dimensions | Imperial | Metric |
|---|---|---|
| I | 41.50 | 12.65 |
| J | 13.50 | 4.11 |
| P | 35.00 | 10.67 |
| E | 12.00 | 3.66 |
| PY | - | - |
| EY | - | - |
| ISP | 41.50 | 12.65 |
| JSP | 13.50 | 4.11 |
| Description | Imperial | Metric |
|---|---|---|
| Forestay Length | 13.5 | 4.1 |
| Sail Areas | Imperial | Metric |
|---|---|---|
| 100% Jib Sail Area | 280.1 | 26 |
| Mainsail Area (Cruising) | 226.8 | 21.1 |
| 100% Jib + Main Sail Area | 506.9 | 47.1 |
| Cruising Spinnaker Sail Area (1.7) | 476.2 | 44.3 |
| Dimensions | Imperial | Metric |
|---|---|---|
| LOA | 31.5 | 9.6 |
| LWL | 25.7 | 7.8 |
| Beam | 10.0 | 3.1 |
| Draft | N/A | N/A |
| Displacement | 9170 lbs. | 4160 kgs. |
| Ballast | 3600 lbs. | 1633 kgs. |
| Ratios | Imperial | Metric |
|---|---|---|
| Sail Area / Displac. | 0.06 | 0.01 |
| Ballast / Displac. | 0.39 | 0.39 |
| Displac. / LOA | 291.11 | 433.33 |
| Construction | Information |
|---|---|
| Hull Type | Fin w/spade rudder |
| Rig Type | Masthead Sloop |
| Designer | William Lapworth |
| Builder | Bangor Punta Marine |
| Construction | FG |
| Ballast Type | Lead |
| First Build | 1979 |
| Last Build | 1984 |
| # Built | N/A |