CNN19980303.1130.1489 NEWS CAPTION divers have found the wreckage of a large ship that went down three centuries ago in what is now texas. the "aimable" once belonged to the french explorer lasalle. historians say it ran aground in 1685 while lasalle was looking for the mouth of the mississippi river. authorities expect the ship to yield even more artifacts than lasalle's personal ship, found three years ago.