Quiz: Plumbing the Depths of Submarines

Submarines today are key pieces of naval fleets and have evolved to send scientists to the deepest regions of the oceans. But the concept of sailing beneath the surface goes back at least to the 15^th century when Leonardo da Vinci developed a concept for a ship to remain submerged for a lengthy period of time. The idea had been thought about by previous engineers but da Vinci fleshed out the feasibility. Although his ideas were not developed, others later began working on different concepts. Take this quiz to see what you know about submarines.