1 Understanding a Photosynthesis Diagram Photosynthesis is a process by which plants convert the radiant energy of sunlight into chemical energy that can be used by themselves to power their lives. 2  A diagram of photâ¦.
U-Boat Crew. The crew numbers aboard a U-boat varied greatly between different U-boat types and the mission it was undertaking. A Type II U-boat comprised of 25 officers and seamen, while a Type VII housed approximately 45. A Type IX had about 50 and Type XXI had a 57 man crew. Sometimes U-boats carried specialist crews on special missions, such as scientists, spies or commandos.
Victory at sea did not come cheaply. The Submarine Force lost 52 boats and 3,506 men. USS Gato (SS-212), launched 21 August 1941, was the first of 54 submarines in her class. Gato-class boats carried the brunt of the U.S. submarine war early in World War II.