The 50-mile wide lagoon of Truk Atoll, far out in the remote expanses of the Pacific, is quite simply the greatest wreck diving location in the world. Scores of virtually intact Japanese WWII wrecks of transport ships, still filled with cargoes of tanks, trucks, artillery, beach mines, shells and aircraft, rest in the crystal-clear waters of the lagoon - along with two Japanese destroyers and one submarine - each today a man-made reef teeming with sea life. The seemingly impregnable fortress islands of Truk Atoll were a powerful air base and the main forward anchorage for the Imperial Japanese Navy (IJN). By 1944, the Allies were pushing westwards across the Pacific islands towards the Japanese homeland. On 4 February 1944, a daring 2,000-mile long-range U.S. reconnaissance flight revealed the Truk lagoon to be full of the might of the Imperial Japanese Navy, along with scores of large supply ships and transports. The Allies decided to attack immediately. Sensing this, the Imperial
