 "PT-105", under the command of Lt. Richard E. Keresey, was present during the action with Japanese destroyers in the Blackett Strait on the night of 1-2 August 1943, in the aftermath of which Lt.(jg) John F. Kennedy's "PT-109" was sunk.On the 22nd of that month, she participated in a daylight raid on the Kolombangara coast that provoked a considerable fight between PT boats and enemy coastal guns.At the end of 1944 MTB Squadron 5 was disbanded and its remaining boats distributed to other squadrons.