Bostrom 31 MK II - Sailboat Data & Rig Dimensions
| Rig Dimensions | Imperial | Metric |
|---|---|---|
| I | 37.40 | 11.40 |
| J | 11.98 | 3.65 |
| P | 31.82 | 9.70 |
| E | 9.19 | 2.80 |
| PY | - | - |
| EY | - | - |
| ISP | 37.40 | 11.40 |
| JSP | 11.98 | 3.65 |
| Description | Imperial | Metric |
|---|---|---|
| Forestay Length | 12 | 3.7 |
| Sail Areas | Imperial | Metric |
|---|---|---|
| 100% Jib Sail Area | 224 | 20.8 |
| Mainsail Area (Cruising) | 157.9 | 14.7 |
| 100% Jib + Main Sail Area | 381.9 | 35.5 |
| Cruising Spinnaker Sail Area (1.7) | 380.8 | 35.5 |
| Dimensions | Imperial | Metric |
|---|---|---|
| LOA | 30.6 | 9.3 |
| LWL | 26.0 | 7.9 |
| Beam | 9.1 | 2.8 |
| Draft | N/A | N/A |
| Displacement | 7275 lbs. | 3300 kgs. |
| Ballast | 352 lbs. | 160 kgs. |
| Ratios | Imperial | Metric |
|---|---|---|
| Sail Area / Displac. | 0.05 | 0.01 |
| Ballast / Displac. | 0.05 | 0.05 |
| Displac. / LOA | 237.75 | 354.84 |
| Construction | Information |
|---|---|
| Hull Type | Fin with rudder on skeg |
| Rig Type | Masthead Sloop |
| Designer | Bruno Boström/Grandinsson |
| Builder | N/A |
| Construction | FG |
| Ballast Type | N/A |
| First Build | 1977 |
| Last Build | 1984 |
| # Built | N/A |