Irwin 10/4 - Sailboat Data & Rig Dimensions
| Rig Dimensions | Imperial | Metric |
|---|---|---|
| I | 35.00 | 10.67 |
| J | 12.00 | 3.66 |
| P | 30.16 | 9.19 |
| E | 12.25 | 3.73 |
| PY | - | - |
| EY | - | - |
| ISP | 35.00 | 10.67 |
| JSP | 12.00 | 3.66 |
| Description | Imperial | Metric |
|---|---|---|
| Forestay Length | 12 | 3.7 |
| Sail Areas | Imperial | Metric |
|---|---|---|
| 100% Jib Sail Area | 210 | 19.5 |
| Mainsail Area (Cruising) | 199.5 | 18.5 |
| 100% Jib + Main Sail Area | 409.5 | 38 |
| Cruising Spinnaker Sail Area (1.7) | 357 | 33.3 |
| Dimensions | Imperial | Metric |
|---|---|---|
| LOA | 25.3 | 7.7 |
| LWL | 21.8 | 6.7 |
| Beam | 10.3 | 3.2 |
| Draft | 2.8 | 0.8 |
| Displacement | 7000 lbs. | 3175 kgs. |
| Ballast | 2000 lbs. | 907 kgs. |
| Ratios | Imperial | Metric |
|---|---|---|
| Sail Area / Displac. | 0.06 | 0.01 |
| Ballast / Displac. | 0.29 | 0.29 |
| Displac. / LOA | 276.68 | 412.34 |
| Construction | Information |
|---|---|
| Hull Type | Keel/CB & spade rudder |
| Rig Type | Cutter |
| Designer | Ted Irwin |
| Builder | Irwin Yacht & Marine Corporation (USA) |
| Construction | FG |
| Ballast Type | N/A |
| First Build | 1975 |
| Last Build | 1982 |
| # Built | N/A |