The Grayback was responsible for sinking a fleet tanker and two transport ships, including one already damaged by the Shad. In September-October 1943, the Grayback formed the first of the Submarine Force’s highly successful “wolfpacks,” referring to a mass-attack tactic in which the Grayback, the USS Cero and the USS Shad teamed up to sink 38,000 tons and damage 63,300 more worth of material on enemy convoys.In May 1943, it was credited with sinking the Japanese cargo ship Yodogawa Maru and the freighter England Maru, seriously damaging the destroyer Yugure with torpedoes and damaging two other freighters.17, 1943, by a depth charge and had to go back to port at Brisbane, Australia, for repairs. 5, 1943, the sub helped rescue six survivors of a crashed B-26 on the island of Munda Bay, earning Cmdr. It sank four landing barges with its deck guns on Dec.Here are some of the many other notable events attributed to Grayback: The efforts of the Grayback and its sister ships played a large role in the success of the Allies’ first major Pacific campaign at Guadalcanal. Through the latter half of 1942, the Grayback damaged several freighters and was a general menace to enemy escorts, submarines and shipping vessels. On March 17, 1942, the sub took down its first target, a 3,291-ton cargo ship off Port Lloyd in the Japanese-held Bonin Islands. In two years, it went on 10 successful war patrols, during which it sank a total of 63,835 tons and 14 ships. The USS Grayback was commissioned on June 30, 1941, and set sail for Pearl Harbor about six months later, quickly becoming a major part of the war’s submarine offensive.

Us navy submarines world war 2