the Titanic is not the famous ship that Ballard has found.I May 2002,he discovered the remains of a boat called PT-109.PT-109 was a small naval boat similar to the one in the picture .Its captain was a young John F .Kennedy.Its job was to stop the Japanese on the Solomon Islands. On 2 August 1943 PT-109 was struck by a Japanese warship and sank two men died,but Kennedy and the rest of the crew managed to swim to a nearby island.The remains of PT -109 have been lying on the bottom of the sea since that day.Ballard used submersibles and naval maps to locate the boat.