The SS President Coolidgewas built in 1931 for the Dollar Steamship Lines, and eventually became a luxury liner for American President Lines. It then collided with two Navy sea mines and sank off the coast of Vanuatu in the Pacific Ocean. Two men lost their lives in the incident, but over 5,000 safely got ashore. The ship was left where it sank. Earthquakes caused some sections of the ship to collapse beneath the water. It is now a popular site to visit for recreational divers because it is extremely accessible, and they can explore large areas of the wreck without specialized equipment.