Over the years, submarine technology has advanced over the years, from the original military submarine, the Turtle, to to the modern WWII nuclear submarines we have today. These developments required numerous technological improvements. To operate American submarines, the Germans need better battery and electric motor technologies and the nuclear submarine obviously needed nuclear technology. Submarines have always been an innovative way to win the navel war. During the American Revolutionary War, the British Navy played a significant role in the oppression of the American people. As a new nation, we had little to no defense against the largest navy in the world at the time. The ships in our port allowed the kids to cut corners and send large quantities of troops to our shores very quickly. This was demonstrated after the Boston Tea Party, when the British Navy cut off the city of Boston from commerce, even though the ship that remained docked was not a military vessel, it is still a demonstration of the water sisterhood of the British people during the revolutionary period. Some colonists got tired of this navel-gazing superiority and decided to do something. The turtle is born. The Turtle would be the first submarine used for war purposes. The design of the turtle posed challenges never seen before. You cannot use a candle for lighting because the flame would consume air. Designers need to find a way to move on all 3 axes. Last but not least, it had to be airtight. There were unique solutions that now seem obvious to us. To solve the light problem, a type of wood fungus called foxfire created its own problem in that if it got close it would stop working, meaning the mission would have to continue into summer . To move on all axes the pie had 3 wheels, one at the top and 1 on each side. The craft also had a rudder. The up and down movement was achieved by a reservoir at the bottom which could be flooded with water to sink and pump the water to rise, meaning you could change the amount of weight. Making a boat was basically done by building something that they already knew could hold water like a barrel, basically the turtle was a large barrel. Another design element was the lead keel which kept the craft upright..