Japanese Submarine I-52 (1943) - Fatal Voyage

Fatal Voyage

On 10 March 1944, on her maiden voyage, I-52 (Commander Uno Kameo) departed Kure via Sasebo for Singapore. Her cargo from Japan included 9.8 tons of molybdenum, 11 tons of tungsten, 2.2 tons of gold in 146 bars packed in 49 metal boxes, 3 tons of opium and 54 kg of caffeine. The gold was payment for German optical technology. She also carried 14 passengers, primarily Japanese technicians, who were to study German technology in anti-aircraft guns, and engines for torpedo boats.

In Singapore she picked up a further 120 tons of tin in ingots, 59.8 tons of caoutchouc (raw rubber) in bales and 3.3 tons of quinine, and headed through the Indian Ocean, to the Atlantic Ocean.

On 6 June 1944, the Japanese naval attaché in Berlin, Rear Admiral Kojima Hideo, signaled the submarine that the Allies had landed in Normandy, thus threatening her eventual destination of Lorient on the coast of France. She was advised to prepare for Norway instead. She was also instructed to rendezvous with a German submarine on 22 June 1944 at 21:15 (GMT) at the co-ordinates 15°N 40°W / 15°N 40°W / 15; -40. I-52 responded with her position, being 35°N 23°W / 35°N 23°W / 35; -23. The message was intercepted and decoded by US intelligence; I-52 had been closely watched all the way from Singapore. Guided by the F-21 Submarine Tracking Room and F-211 "Secret Room" of the Tenth Fleet which was in charge of the Atlantic section, a hunter-killer task force was targeted towards her.

On the night of 22 June 1944 about 850 nautical miles (1,574 km) west of the Cape Verde Islands off the coast of Africa, I-52 rendezvoused with U-530, a Type IXC/40 U-boat commanded by Kapitänleutnant Kurt Lange. U-530 provided her with fuel, and also transferred a Naxos FuMB 7 radar detector, and an Enigma coding machine, along with two radar operators, Petty Officers Schulze and Behrendt, and German liaison officer for the trip through the Bay of Biscay.

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