A '''submarine''' is a vehicle that travels under water (i.e. an underwater boat). The submarine was invented in the 17th century. Though it was originally designed for the purpose of exploration, its military benefits soon became clear. The first military submarine was the Turtle used by the Colonists during the [[American Revolution]]. Submarines have been used in many other wars since, most notably World Wars I and II, and are still used for their original purpose of exploration to this day. | A '''submarine''' is a vehicle that travels under water (i.e. an underwater boat). The submarine was invented in the 17th century. Though it was originally designed for the purpose of exploration, its military benefits soon became clear. The first military submarine was the Turtle used by the Colonists during the [[American Revolution]]. Submarines have been used in many other wars since, most notably World Wars I and II, and are still used for their original purpose of exploration to this day. |