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.
Submarines are very largeâthe hull of the USS Balao (image at left, SS-324 Balao), one of the most successful U.S. submarines and a good example for the basic idea of a submarine, was 312 feet long and displaced 2,415 tons; but also very cumbersomeâUSS Balao carried 10 officers and 70 enlisted men.