Alpa 7.4 - Sailboat Data & Rig Dimensions
| Rig Dimensions | Imperial | Metric |
|---|---|---|
| I | 32.28 | 9.84 |
| J | 10.17 | 3.10 |
| P | 25.56 | 7.79 |
| E | 9.18 | 2.80 |
| PY | - | - |
| EY | - | - |
| ISP | 32.28 | 9.84 |
| JSP | 10.17 | 3.10 |
| Description | Imperial | Metric |
|---|---|---|
| Forestay Length | 10.2 | 3.1 |
| Sail Areas | Imperial | Metric |
|---|---|---|
| 100% Jib Sail Area | 164.1 | 15.3 |
| Mainsail Area (Cruising) | 126.7 | 11.8 |
| 100% Jib + Main Sail Area | 290.8 | 27 |
| Cruising Spinnaker Sail Area (1.7) | 279 | 26 |
| Dimensions | Imperial | Metric |
|---|---|---|
| LOA | 24.3 | 7.4 |
| LWL | 20.4 | 6.2 |
| Beam | 8.5 | 2.6 |
| Draft | N/A | N/A |
| Displacement | 4189 lbs. | 1900 kgs. |
| Ballast | N/A | N/A |
| Ratios | Imperial | Metric |
|---|---|---|
| Sail Area / Displac. | 0.07 | 0.01 |
| Ballast / Displac. | N/A | N/A |
| Displac. / LOA | 172.39 | 256.76 |
| Construction | Information |
|---|---|
| Hull Type | Fin with rudder on skeg |
| Rig Type | Masthead Sloop |
| Designer | Sparkman & Stephens |
| Builder | Alpa (ITA) |
| Construction | FG |
| Ballast Type | N/A |
| First Build | 1974 |
| Last Build | 1981 |
| # Built | N/A |