Map overlay documenting the activities of the US Naval operations, Japanese ships, and cargo ships on August 13, 1945. The overlay contains annotations regarding United States submarines USS Atule (SS/AGSS-403), USS Blackfin (SS-322), USS Spikefish (SS/AGSS-404), and USS Stickleback (SS-415), Commander of the 3rd Fleet, Commander Task Force 95, Commander Task Groups 30.8, 73.1, and 94.1, Commander Task Units 30.8.9 and 95.9.2, Task Forces 37 and 38, Task Group 38, and Task Unit 34.8.2, Japanese Air Bombs Nagayo and Suzuka, coastal defense vehicle #67, destroyer Harutsuki, ships Etorofu Maru and Tako Maru, and submarines I-266, I-353, I-363, I-366, and I-47. Significant events visible on the map include Commander of the 3rd Fleet and Task Force 38 striking Tokyo area, Commander Task Force 95 sweeping operations, Task Force 34.8.2 bombarding Muroran, I-266 patrolling north of Palau, I-353 patrolling area midway between Leyte Gulf and Okinawa, I-363 patrolling between Marianas and Okinawa, I-366 patrolling area 500 miles north of Palau, I-47 patrolling between Marianas and Okinawa, USS Spikefish tracking Japanese sub, USS Stickleback entering Japan Sea through Tsushima Strait, and Army Heavies attacking Kagi (Taiwan) and Takao.