Sunken Ships refer to a trio of submerged vessels, each found at different locations on the bottom of the seafloor of the Surrounding Ocean of Liberty City. Each possesses a unique name.
Sunken Ships of Chinatown Wars' Liberty City:
Nothing else is known about these sunken ships. They may have been placed simply as a piece of scenery to give the game a more realistic feel or as an Easter egg for the player to discover.