The
Official Chronology of the U.S. Navy in World War II--1943には"Submarine
Pollack
(SS-180) sinks Japanese merchant cargo ship Asama
Maru off Kushiro, Japan, 42゚41'N, 145゚37'E"とあり、同船は43.1/21アメリカ潜水艦(SS180)ポラックの発射した魚雷を受けて沈没したとも思えるが、DANFSには"POLLACK’s
fifth war patrol was again spent in waters off the Japanese home
islands. After departing Pearl Harbor 31 December, she sighted
only one target before terminating her fifth war patrol at Pearl
Harbor, 10 February 1943"とあるのみで攻撃の記録はない.