1. Submarines Of WWI
... of lead that provided ballast and kept the Turtle upright; 200 pounds of which could be released in case of an emergency. On the front and top were primitive propellers that could be turned from inside to provide movement. On the back was a rudder that could also be ... had a copper lined hull so the auger could not penetrate. The mission was abandoned and the Turtle never saw action again. Bushnell's failure set the stage for the submarine as a warship for the future. With the development of periscopes and self-propelled torpedoes, submarines would become a formidable factor in naval wa...
- Word Count: 1988
- Approx Pages: 8
- Has Bibliography
- Grade Level: High School