Map overlay documenting the activities of the US Naval operations, Japanese ships, and cargo ships from March 18, 1944. The overlay contains annotations regarding USS Bashaw (SS-241), USS Belleau Wood (CVL-24), USS Blackfish (SS-221), USS Cleveland (CL-55), USS Columbia (CL-55), USS Enterprise (CV-6), USS Gunnel (SS-253), USS Idaho (BB-42), USS Kingfish (SS-234), USS Mississippi (BB-41), USS Montpelier (CL-57), USS New Mexico (BB-40), USS Pennsylvania (BB-38), USS Ruby (PY-21), USS Scamp (SS-277), USS Tennessee (BB-43), 5th Bombardment Command, Cruiser Division 14, Commander Task Force 72, Destroyer Squadron 23, Destroyer Squadron 50, Destroyer Squadron 25, Operations South Pacific Forces, Submarine Chaser Division 21, Task Force 37, Task Force 39, Task Group 36.1, Task Group 36.3, German ship Ursula Rickmers, Japanese minelayer Aotaka, auxiliary minesweeper Chikushi Maru, carrier Chiyoda, auxiliary gunboat Chojusan Maru, ship Hasho, destroyer Hibiki, transport Hokoroku Maru, merchant ship Hokoku Maru, transport ship Horai Maru, cargo ship Imizu Maru, destroyer Inazuma, transport Kazura Maru, tanker Kyoei Maru, transport Nichiei Maru, ship Okiyurishima, cargo ship Seiryo Maru, transport Tairei Maru, transport Teia Maru. Significant events visible on the map include the Gunnel hitting one auxiliary carrier and two destroyers, the Hokoroku Maru being torpedoed and sunk and Task Forces 37 and 36.3 bombarding Kavieng.