Land Tortoise
Warren County, United States
The Land Tortoise was a military transport ship built for service on Lake George, New York during the French and Indian War. The vessel, a radeau (raft), was built in 1758, and was intentionally sunk later that year with the intention of raising her for use in 1759. This did not happen, and the sunken vessel was discovered in 1990. Its site is a National Historic Landmark and a state-protected underwater preserve. It is believed to be the oldest intact warship in North America, and is the only surviving ship of its type. The site is accessible to the diving public with advanced diving skills.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).