Herreshoff 31 (Cat Ketch 31) - Sailboat Data & Rig Dimensions
| Rig Dimensions | Imperial | Metric |
|---|---|---|
| I | - | - |
| J | - | - |
| P | 34.00 | 10.36 |
| E | 14.00 | 4.27 |
| PY | 29.00 | 8.84 |
| EY | 11.50 | 3.51 |
| ISP | - | - |
| JSP | - | - |
| Sail Areas | Imperial | Metric |
|---|---|---|
| 100% Jib Sail Area | 0 | 0 |
| Mainsail Area (Cruising) | 257 | 23.9 |
| 100% Jib + Main Sail Area | 257 | 23.9 |
| Cruising Spinnaker Sail Area (1.7) | 0 | 0.1 |
| Dimensions | Imperial | Metric |
|---|---|---|
| LOA | 30.8 | 9.4 |
| LWL | 28.0 | 8.5 |
| Beam | 10.3 | 3.2 |
| Draft | N/A | N/A |
| Displacement | 7560 lbs. | 3429 kgs. |
| Ballast | 3350 lbs. | 1520 kgs. |
| Ratios | Imperial | Metric |
|---|---|---|
| Sail Area / Displac. | 0.03 | 0.01 |
| Ballast / Displac. | 0.44 | 0.44 |
| Displac. / LOA | 245.45 | 364.79 |
| Construction | Information |
|---|---|
| Hull Type | Fin w/transom hung rudder |
| Rig Type | Cat Ketch (unstayed) |
| Designer | Halsey Herreshoff |
| Builder | Cat Ketch Corp. |
| Construction | Wood/FG |
| Ballast Type | Lead |
| First Build | 1979 |
| Last Build | 1986 |
| # Built | 100 |