J/40 - Sailboat Data & Rig Dimensions
| Rig Dimensions | Imperial | Metric |
|---|---|---|
| I | 50.00 | 15.24 |
| J | 14.70 | 4.48 |
| P | 44.20 | 13.47 |
| E | 18.00 | 5.49 |
| PY | - | - |
| EY | - | - |
| ISP | 50.00 | 15.24 |
| JSP | 14.70 | 4.48 |
| Description | Imperial | Metric |
|---|---|---|
| Forestay Length | 14.7 | 4.5 |
| Sail Areas | Imperial | Metric |
|---|---|---|
| 100% Jib Sail Area | 367.5 | 34.1 |
| Mainsail Area (Cruising) | 429.6 | 39.9 |
| 100% Jib + Main Sail Area | 797.1 | 74.1 |
| Cruising Spinnaker Sail Area (1.7) | 624.8 | 58.1 |
| Dimensions | Imperial | Metric |
|---|---|---|
| LOA | 40.0 | 12.2 |
| LWL | 34.0 | 10.4 |
| Beam | 12.2 | 3.7 |
| Draft | N/A | N/A |
| Displacement | 18000 lbs. | 8165 kgs. |
| Ballast | 6500 lbs. | 2948 kgs. |
| Ratios | Imperial | Metric |
|---|---|---|
| Sail Area / Displac. | 0.04 | 0.01 |
| Ballast / Displac. | 0.36 | 0.36 |
| Displac. / LOA | 450 | 669.26 |
| Construction | Information |
|---|---|
| Hull Type | Fin w/spade rudder |
| Rig Type | Masthead Sloop |
| Designer | Johnstone |
| Builder | J Boats Tillotson Pearson (USA) |
| Construction | FG |
| Ballast Type | Lead |
| First Build | 1984 |
| Last Build | 1993 |
| # Built | 85 |