The Phoenix 18 is an American catamaran sailing dinghy that was designed by Dick Gibbs and Rod Macalpine-Downie and first built in 1964.
[1][2][3][4][5][6] The boat is a smaller variant of the Shark 20 and a development of the Thai Mark IV.
[1][2][7][8][9][10][11][12] The Phoenix 18 is a recreational sailboat, built predominantly of fiberglass and wood.
The twin hulls both have raked stems, plumb transoms, transom-hung rudders controlled by a tiller and a retractable centerboards.
[1][2] The boat has a draft of 2.25 ft (0.69 m) with a centerboard extended and 4 in (10 cm) with both retracted, allowing operation in shallow water, beaching or ground transportation on a trailer.