Which name is recognized as the earliest submarine in history?

• A. Nautilus
• B. Enterprise
• C. Turtle
• D. Alligator

Answer: (C)

Understanding the timeline of early submarines is what this question hinges on. The Turtle, built by David Bushnell and deployed in 1775 during the American Revolutionary War, is recognized as the first documented submarine used in warfare. It was a small, hand-cranked craft designed to dive briefly and attach an explosive to an enemy hull, marking the earliest practical attempt at underwater operation. The other names come from later developments or from fiction and later real vessels: Nautilus is famous from Jules Verne and, in real history, not until the 20th century; Alligator appeared a few years after the Turtle but not earlier; Enterprise is a name associated with later submarines and other vessels. So the Turtle is the earliest submarine in history.