Cape San Martin was a C1-B freighter. Consolidated Steel at Wilmington, California, built her as Maritime Commission hull 499 (yard hull 239) and delivered her in April 1943. She was a merchant ship, not a Navy ship.
She sailed in the Northern Garrison Group, Task Group 51.6, and was at Kwajalein and Majuro from 5 to 8 February 1944. She was not sunk, and she was scrapped in 1974. This account rests on the Marshalls order of battle and the Maritime Commission build lists used on this site. No separate history of this ship was found, so nothing beyond those records is claimed here.