Map overlay documenting the activities of the US Naval operations, Japanese ships, and cargo ships from August 5, 1945. The overlay contains annotations regarding Japanese submarines I-47, I-I-358, I-366, I-373, and Chogei, destroyers Harutsuki and Take, USS Tucson (CL-98), Commander in Chief Pacific Fleet Advanced Headquarters, Commander in Chief Pacific Forces, Fleet Radio Unit in the Pacific, Task Forces 37, 38, and 95, Task Group 73.4, Task Unit 95.9.6, T.I. Sum, North Pacific Force, Deputy Commander Fleet Air Wing 4, and Commander in Chief Sasebo Naval Communications Unit. Significant events visible on the map include Commander in Chief Pacific Fleet Advanced Headquarters sighting warships, Commander in Chief Sasebo Naval Communications Unit striking force and carrying out patrol of blank tonight and assuming alert, Commanding General planning on striking Kyushu, Deputy Commander Fleet Air Wing 4 conducting anti-shipping flight take off, I-266, I-358, and I-366 patrolling north of Palau, I-373 departing, I-47 patrolling between Marianas and Okinawa, North Pacific Force conducting anti-shipping flight take off, Task Force 37 and 38 cancelling strike on Busan, Sasebo, Kure, and Kyushu, Task Force 95 sweeping China coast, and USS Tucson patrolling east of Okinawa.