Two ships of Moore-McCormack have borne the name Mormaclark
SS Mormaclark was launched in 1939 as a Type C2 ship. She was acquired by the US Navy in 1941 as an Arcturus-class attack cargo ship and renamed USS Betelgeuse. She was decommissioned in 1946, sold into civilian service in 1947 as the Star Betelgeuze and scrapped in 1972.
SS Mormaclark was launched in 1943 as a Type C1-B ship. She was transferred to the National Defense Reserve Fleet in 1959 and scrapped in 1970.
