Claim: The Japanese escort Ishigaki was based in Kuriles and sank the submarine the USS Gibson during World War II.
Evidence: On 7 October 1943, Ishigaki sank the submarine USS S-44. On 31 May 1944, Ishigaki was torpedoed by the submarine USS Herring, and her bow was destroyed. She managed to drop several depth charges before sinking with a loss of 167 sailors.