Naiad 18
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| Development | |
|---|---|
| Designer | Mark Ellis |
| Location | Canada |
| Year | 1984 to 1986 |
| No. built | 20[1][better source needed] |
| Builder(s) | Luna Yachts |
| Name | Naiad 18 |
| Boat | |
| Displacement | 1,100 lb (499 kg) |
| Draft | 3.67 ft (1.12 m) centreboard down |
| Hull | |
| Type | Monohull |
| Construction | Fiberglass |
| LOA | 18.25 ft (5.56 m) |
| LWL | 17.50 ft (5.33 m) |
| Beam | 6.00 ft (1.83 m) |
| Engine type | Outboard motor |
| Hull appendages | |
| Keel/board type | centreboard |
| Ballast | 550 lb (249 kg) |
| Rudder(s) | transom-mounted rudder |
| Rig | |
| Rig type | Cat rig |
| Sails | |
| Sailplan | Catboat |
| Mainsail area | 144 sq ft (13.4 m2) |
| Total sail area | 144 sq ft (13.4 m2) |
The Naiad 18 is a Canadian trailerable sailboat, that was designed by Mark Ellis, first built from 1984 to 1986, and named for the mythological water sprites.[2][3][4]
The boat was built by Luna Yachts in Oakville, Ontario, Canada, between 1984 and 1986, but it is now out of production.[2][4] It is believed that 20 were completed. Although one was destroyed, by 2013, 19 remained in service.[1]
Design

The Naiad 18 is a small, open, recreational keelboat, built predominantly of fiberglass, with wood trim. It has a cat rig, a plumb stem, a vertical transom, a transom-hung rudder, a wishbone boom and a centerboard that folds up into a trunk. It displaces 1,100 lb (499 kg) and carries 550 lb (249 kg) of ballast.[2][4]
The boat has a draft of 3.67 ft (1.12 m) with the centreboard extended and 0.67 ft (0.20 m) with it retracted, allowing beaching or ground transportation on a trailer.[2][4]
The boat can be optionally fitted with a small outboard motor for docking and maneuvering.[2][4]
The design has a hull speed of 5.61 kn (10.39 km/h).[4][5]