draught tube
41HMS Hero (H99) — For other ships of the same name, see HMS Hero and HMCS Chaudière …
42HMS Tiger (1913) — Tiger class battlecruiser redirects here. Not to be confused with Tiger class fast attack craft and Tiger class cruiser For other ships of the same name, see HMS Tiger. Tiger in her post 1918 configuration with mainmast ahead of her third funnel …
43Thermal power station — Republika Power Plant, a thermal power station in Pernik, Bulgaria …
44N3 class battleship — …
45Galley — For other uses, see Galley (disambiguation). A model of a Maltese design typical of the 16th century, the last great era of the wargalley A galley is a type of ship propelled by rowers that originated in the Mediterranean region and was used for… …
46Courageous class aircraft carrier — HMS Glorious in the early 1930s Class overview Name: Courageous class Operators …
47PCV valve — The Positive Crankcase Ventilation valve, or PCV valve, is a one way valve that ensures continual evacuation of gases from inside a gasoline internal combustion engine s crankcase.ExplanationAs an engine runs, gases and combustion pressure are… …
48London Underground cooling — In summer, temperatures on parts of the London Underground can become very uncomfortable due to its deep and poorly ventilated tube tunnels: temperatures as high as 47°C (116 °F) were reported in the 2006 European heat wave. [cite… …
49Mercedes-Benz R171 — Manufacturer DaimlerChrysler Production 2004 2011; Predecessor Mercedes Benz R170 …
50Metrication in the United Kingdom — The metric and imperial systems of measurement are used side by side in the United Kingdom: Eurostar s design speed is cited both as 300 km/h [1] and as 186 mph .[2] Metrication in the United Kingdom is the pr …
