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.
Notoriously, RMS Titanic carried only 20 lifeboats for over 2,000 crew and passengers. This was because the ship was considered (by design) to be the ultimate lifeboat. Featuring multiple watertight compartments to prevent the spread of flooding, the ship was designed to remain afloat even if several compartments were breached.