Extra Research/Points

-There have been no other submarines with the idea of picking up trash

-Submarines have plenty of storage which makes them a more efficient automobile for picking up trash then a boat

-Submarines are able to go deep depths to search for large underwater trash piles

-Since submarines tend to be large, they are able to carry more devices to pick up the trash

-"Drebbel patented his submarine invention in 1598. He was a map maker, engraver, but especially an inventor. His submarine was powered by oars allowing it to be rowed underwater. Tubes to the surface provided air"(Marinebio.org).

-"The British developed radar and sonar during WWII. The U.S. Navy improved these systems along with the German-perfected snorkel [which greatly increased a submarine’s submergence time by allowing diesel engines to run underwater]"(Marinebio.org).

-"submarines must function in agreement with some key laws of nature, including Archimedes’ Principle and Boyles’ Law"(Marinebio.org).

-"The inner hull protects the crew from the immense water pressure of the ocean depths and insulates the sub from the freezing temperatures. This hull is called the pressure hull. The outer hull shapes the submarine’s body. The ballast tanks, which control the sub’s buoyancy, are located between the inner and outer hulls"(Marinebio.org).

-"To stay in control and stable, a submerged submarine must maintain a condition called trim. This means its weight must be perfectly balanced throughout the whole ship"(Marinebio.org).

-"Buoyancy is controlled by the ballast tanks, which are found between the submarine’s inner and outer hulls.

A submarine resting on the surface has positive buoyancy, which means it is less dense than the water around it and will float. At this time, the ballast tanks are mainly full of air. To submerge, the submarine must have negative buoyancy. Vents on top of the ballast tanks are opened. Seawater coming in through the flood ports forces air out the vents, and the submarine begins to sink"(Marinebio.org).