Submarines of the Imperial Japanese Navy
The submarines ("I-52"-class) were submarines of the Imperial Japanese Navy, designed and built by Mitsubishi Corporation, between 1943 and 1944, as cargo carriers. They were quite long and carried a crew of up to 94 officers and enlisted. They also had a long cruising range at a speed of .
Isla San Telmo
The wreck of a submarine can be seen off the beach during low tide. The Japanese had examined this submarine and stated that it did not belong to them. However, a subsequent underwater study by German divers reported that it belonged to the Japanese, having wrecked when the Japanese intended to destroy the strategically important Panama Canal in 1942. It was conjectured that the submarine was abandoned by its crew due to technical problems and the crew had taken refuge on the island.