Lagoon 42
| Development | |
|---|---|
| Designer | Van Peteghem/Lauriot-Prevost | 
| Location | France | 
| Year | 1990 | 
| No. built | 51 | 
| Builder(s) | Jeanneau TPI Composites Construction Navale Bordeaux Lagoon Catamaran  | 
| Role | Cruiser | 
| Name | Lagoon 42 | 
| Boat | |
| Displacement | 16,550 lb (7,507 kg) | 
| Draft | 4.42 ft (1.35 m) | 
| Hull | |
| Type | catamaran | 
| Construction | fiberglass | 
| LOA | 42.50 ft (12.95 m) | 
| LWL | 38.75 ft (11.81 m) | 
| Beam | 22.67 ft (6.91 m) | 
| Engine type | Two Perkins Engines or Yanmar 27 hp (20 kW) diesel engines | 
| Hull appendages | |
| Keel/board type | twin keels | 
| Rudder(s) | Twin spade-type rudders | 
| Rig | |
| Rig type | Bermuda rig | 
| I foretriangle height | 48.56 ft (14.80 m) | 
| J foretriangle base | 13.78 ft (4.20 m) | 
| P mainsail luff | 50.20 ft (15.30 m) | 
| E mainsail foot | 13.78 ft (4.20 m) | 
| Sails | |
| Sailplan | fractional rigged sloop | 
| Total sail area | 1,119 sq ft (104.0 m2) | 
The Lagoon 42 is a French sailboat that was designed by Van Peteghem/Lauriot-Prevost as a cruiser and first built in 1990. It was also sold as the Moorings Lagoon 4200 for Moorings Yacht Charter use in the yacht charter trade.
A new design was introduced under the same model name of Lagoon 42 in 2016, but it is now usually referred to as the Lagoon 42-2 or Lagoon 42-2016 to differentiate it from the earlier 1990 design.