What is the first version of a submarine?

Cornelius Drebbel built the first workable submarine in 1620 using the 1578 plans of English mathematician William Bourne. The frame was constructed of wood, and it was wrapped with waterproof leather. Bourne is credited with being the inventor of the first navigable submarine.

David Bushnell's TURTLE in 1776, piloted by Sgt. Lee of the Continental Army.