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.
Royal Navy Submarine Service. The Royal Navy Submarine Service is the submarine element of the Royal Navy. It is sometimes known as the Silent Service, as the submarines are generally required to operate undetected. The service operates seven fleet submarines (SSNs), of the Trafalgar and Astute classes, and four ballistic missile submarines (SSBN), of the Vanguard class.