Map overlay documenting the activities of the US Naval operations, Japanese ships, and cargo ships from October 7, 1944. The overlay contains annotations regarding the USS Sawfish (SS-276), USS Aspro (SS-309), Commander 3rd Fleet, Task Force 38, Commander Task Force 59, six aircrafts, German submarine U-168, submarine U-196, Japanese diplomat Chiune Sugihara, Submarine Chaser No. 147, Submarine Chaser No. 193, Submarine Chaser No. 194, Submarine Chaser No. 206, submarine I-8, Convoy No. 3001, aircraft transport ship Kanto Maru, submarine chaser Shonan Maru No. 17, Submarine Chaser No. 35, Transport Ship No. 139, Convoy Taka 301, seaplane tender Kinugasa Maru, convoy Mata 28, convoy Kamoi, escort vessel Etorofu, auxiliary submarine chaser Shonan Maru, cargo ship Chosen Maru, vessel Huashan Maru, Submarine Chaser No. 20. Significant events visible on the map include an attack on Convoy No. 3001, aircraft attacking Okinawa, submarine U-168 being attacked, Transport Ship No. 139 being attacked, the Kinugasa Maru being torpedoed and sunk, the USS Aspro sinking an auxiliary cargo ship, the Chosen Maru being torpedoed and the Huashan Maru being torpedoed.