USS Grayback (SS-208) - First Patrol

First Patrol

Grayback’s first war patrol from 15 February to 10 April took her along the coast of Saipan and Guam. There she had a four-day encounter with an enemy submarine; the enemy I-boat fired two torpedoes at Grayback on the morning of 22 February, then continued to trail her across the Pacific. Grayback spotted the enemy conning tower a couple of times, and the Japanese ship broached once; but the Grayback could not get into position to attack. After four days, Grayback shook the other sub and continued on patrol. On 17 March she sank her first ship, a 3291-ton cargo ship off Port Lloyd.

Grayback’s second war patrol met with a dearth of targets although she even took the unusual and risky measure of patrolling surfaced during the day. On 22 June she arrived at Fremantle, Australia, which was to remain her home base for most of the war. On her third and fourth war patrols, in the South China Sea and St. George's Passage, Grayback was hampered by bright moonlight, shallow and treacherous water, and enemy patrol craft. Despite these hazards, she damaged several freighters and an enemy submarine. However, the very presence of Grayback and her sister ships in these waters—the threat they presented to shipping and the number of enemy escorts they tied up—was an important factor in the successful conclusion of the Guadalcanal campaign, America's first offensive campaign in the Pacific war.