USS PT-157, an 80-foot ELCO type motor torpedo boat, was placed in service in November 1942, assigned to Motor Torpedo Boat Squadron NINE. After being transported to the south Pacific, she served in the Central Solomons campaign. Among her actions were night engagements with Japanese destroyers in the New Georgia-Kolombangara areas on 3-4 July and 1-2 August 1943. Later in August she participated in an attack on a small enemy cargo ship and in a battle with Japanese aircraft.

PT-157's squadron subsequently took part in the operations up the Solomons chain and, after May 1944, in the New Guinea area. Later in the Pacific War, it served in the Philippines. No longer needed after the fighting had ended, in late November 1945 PT-157 was taken out of service and destroyed.