J/70
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| Development | |
|---|---|
| Designer | Alan Johnstone | 
| Location | United States | 
| Year | 2012 | 
| No. built | more than 1324 (2018) | 
| Builder(s) | J Boats | 
| Name | J/70 | 
| Boat | |
| Displacement | 1,790 lb (810 kg) | 
| Draft | 4.92 ft (1.50 m) | 
| Hull | |
| Construction | Fiberglass | 
| LOA | 22.74 ft (6.93 m) | 
| LWL | 20.47 ft (6.24 m) | 
| Beam | 7.38 ft (2.25 m) | 
| Hull appendages | |
| Keel/board type | fin keel | 
| Ballast | 628 lb (285 kg) | 
| Rudder(s) | transom-hung | 
| Rig | |
| Rig type | Fractional rigged sloop | 
| I foretriangle height | 26.77 ft (8.16 m) | 
| J foretriangle base | 7.68 ft (2.34 m) | 
| P mainsail luff | 26.16 ft (7.97 m) | 
| E mainsail foot | 9.44 ft (2.88 m) | 
| Sails | |
| Mainsail area | 123.48 sq ft (11.472 m2) | 
| Jib/genoa area | 102.80 sq ft (9.550 m2) | 
| Spinnaker area | 491 sq ft (45.6 m2) | 
| Total sail area | 226.27 sq ft (21.021 m2) | 
J/70 is a trailerable, 6.93-metre (22.7 ft) American sailboat class designed by Alan Johnstone and first built in 2012.