The Knox Class frigates were designed as anti-submarine warfare platforms for the United States Navy, with 46 ships commissioned between 1969-1974. Equipped with hull-mounted sonars and a helicopter deck, the frigates are also armed with missiles, torpedoes, and a naval gun. Powered by a steam turbine generating 26MW, the Knox Class frigates have a maximum speed of 27 knots and dimensions of 133.5m long, 14.3m wide, and 7.5m draft. Several remain in service today with the navies of Taiwan, Mexico, Turkey, Thailand, and Egypt.