Irwin 28 MK III - Sailboat Data & Rig Dimensions
| Rig Dimensions | Imperial | Metric |
|---|---|---|
| I | 37.00 | 11.28 |
| J | 12.00 | 3.66 |
| P | 31.70 | 9.66 |
| E | 9.80 | 2.99 |
| PY | - | - |
| EY | - | - |
| ISP | 37.00 | 11.28 |
| JSP | 12.00 | 3.66 |
| Description | Imperial | Metric |
|---|---|---|
| Forestay Length | 12 | 3.7 |
| Sail Areas | Imperial | Metric |
|---|---|---|
| 100% Jib Sail Area | 222 | 20.6 |
| Mainsail Area (Cruising) | 167.8 | 15.6 |
| 100% Jib + Main Sail Area | 389.8 | 36.2 |
| Cruising Spinnaker Sail Area (1.7) | 377.4 | 35.2 |
| Dimensions | Imperial | Metric |
|---|---|---|
| LOA | 28.5 | 8.7 |
| LWL | 23.0 | 7.0 |
| Beam | 9.0 | 2.7 |
| Draft | N/A | N/A |
| Displacement | 7800 lbs. | 3538 kgs. |
| Ballast | 3000 lbs. | 1361 kgs. |
| Ratios | Imperial | Metric |
|---|---|---|
| Sail Area / Displac. | 0.05 | 0.01 |
| Ballast / Displac. | 0.38 | 0.38 |
| Displac. / LOA | 273.68 | 406.67 |
| Construction | Information |
|---|---|
| Hull Type | Fin with rudder on skeg |
| Rig Type | Masthead Sloop |
| Designer | Ted Irwin |
| Builder | Irwin Yachts (USA) |
| Construction | FG |
| Ballast Type | Lead |
| First Build | 1974 |
| Last Build | 1976 |
| # Built | N/A |