The Titanic is not the only famous ship that Ballard has found.In 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 job was to stop the Japanese navy from carrying supplies to soldiers on the Solomon Island.On 2 August 1943 PT-109 was struck by a Japanese warship and sank.Two men dies,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 submersible and naval maps to locate the boat.