At that time, Washington is leading the continental army to conduct anti-colonial wars. Washington attaches great importance to Bush Neap, asked him to design a submarine. This submarine is simple, and the shell of the boat is wooden, imitating into a bucket. When it is floating in the water, it is like a cutting edge, and the submarine is used to bite with two turtle shells, so people call it a tenthing boat.
The turtle is single driving, and the driver shakes a helical propeller with hand to make the boat forward, and set a water cabinet in the boat. When the submarine is floating, the water displacement in the water cabinet is removed from the water cabinet. In an emergency, you can also throw away the heavy objects on the boat, so that boats are fast. Carrying a gunpowder bar in the top of the tenthing boat, when it attacks the enemy ship, sneak into the enemy ship, use the drill bore of the drill on top of the boat, take the gunpowder barrel in the enemy board, use the gunpowder barrel explosion Powerful, bombing enemy ship.
The first battle of the tenthing boat is this night attack mooring in the British warship "Eagle" battleship in the NEW. Originally, Bush Neil is ready to drive the boat, because the body is sick, by a sergeant he performs the task. Take the night cover, the tenthing boat drifts in the sea, when it approaches the enemy ship, sneaked into the water and reached the bottom of the Bank of Warcraft. Unfortunately, the drill drill is a metal plate, and the drill is unavailable. The tenthing boat is ready to change, but the tide is thrown from the British battleship. The turtle can only abandon the attack, floating the water, and is found by the British patrol boat. When the tenthing boat is chased by patrol boat, the drills of the boat are urgently somewhat, and the carrying gunpowder barrel is released. "Bang" sounds, scare the British patrol boat. The first underwater battle of the submarine is ended.