At 02.17 hours on 17 May 1942 the unescorted San Victorio (Master Sidney Perry), on her maiden voyage, was hit by two torpedoes from U-155 and sank southwest of Grenada. The tanker had been spotted at 00.33 hours and missed by a first torpedo at 01.14 hours. The U-boat had to crash dive 10 minutes after the hits because a flying boat was sighted. The master, 42 crew members, seven gunners and one passenger were lost. The sole survivor, gunner Anthony Ryan, was picked up by the American patrol yacht USS Turquoise (PY 18) and landed at Trinidad.