The hydrofoil, a ship that overcomes hull resistance by operating with the hull above the water surface, is one type of vessel that is able to cruise at speeds of up to 50 knots in significant sea states. This paper presents a review of the Canadian program directly related to the constructing and trialing of HMCS BRAS D’OR, an open ocean hydrofoil. It summarizes the history of the designing, constructing, and trialing of the vessel. The hull layout, foil configuration, and machinery arrangement are discussed in some detail. Practical operating experience and some results obtained during the trials conducted throughout the program are also described.

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