USS Patroclus (ARL-19) was laid down as a United States Navy LST-542-class tank landing ship but converted to one of 39 Achelous-class repair ships that were used for repairing landing craft during World War II. Named for Patroclus (a Homeric character; a beloved of Achilles, slain by Hector while fighting in Achilles' armor), she was the only US Naval vessel to bear the name.