May 31, 1944
USS Barb (SS 220) and USS Herring (SS 233) planned an attack Japanese shipping in the Sea of Okhotsk about 150 miles west of Matsuwa Island, Kuril Islands. Next, Herring attacked convoy NE and sank escort vessel Ishigaki and army cargo ship Hokuyo Maru west of Matsuwa Island. Barb came across the convoy NE and sank army cargo ship Madras Maru and transport Koto Maru, southest of Paramushir.
Theater: Pacific Theater
Source: Naval History & Heritage Command