United States fleet of invasion craft sail toward the shore of Kerama Retto during World War 2. United States attack transport ships (APA) sailing toward the beach. A Japanese Shinyo-class suicide motorboat passes by a dock at slow speed. Motorboat underway circling along the beach at Kerama Retto. United States soldier opens the engine cover of a docked suicide motorboat. Soldier uses a screwdriver on Japanese suicide boat’s engine.