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.
Perhaps the worst submarine disaster in recent memory was Russiaâs loss of K-141 Kursk, which was a Project 949A Antey-class (Oscar II) nuclear-powered guided missile submarine. The massive 16,000-ton submarine was destroyed in a massive explosion on August 12, 2000âwhich killed all 118 members of its crew.