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Washed air ventilation units provided fresh air for all interior spaces with exhaust fans for removal of foul air. [3] Three steam turbines drove generator sets providing electricity for 4,500 electric lights, including the largest searchlight (32 in (81.3 cm)) on the Great Lakes, and the ship was extensively electrified for auxiliary functions ...
Preparation for welding of pipes, valves and other fittings: 22.03.1991: Disbanded CEN/TC 81: Capacities of metal cans for fruit, vegetables and similar products: 01.01.1974: Disbanded CEN/TC 82: Technological tests for doors, fastenings and their building hardware: 29.03.1991: Disbanded CEN/TC 83
friction plug welding; Portable equipment for friction stud welding is available for use on construction work sites, offshore, underwater and in workshops. These portable units are much lighter and smaller than the large static friction welding machines which are used, for example, in factories to weld engine components such as drive shafts.
[28] Their airboat was the first to use an air rudder (a rudder directing the propeller exhaust rather than the water), a major improvement in modern airboat design. [ 29 ] The purpose of Williams, Young, and Jensen's airboat was to help preserve and protect bird populations and animal life at the world's largest migratory game bird refuge. [ 30 ]
Visible evidence of corrosive attack in a marine environment is known as "tea staining". [ 10 ] Like other grades of stainless steel, marine grade stainless steel is a relatively poor conductor of both heat and of electricity when compared to metals and other conductive materials.
A ducted propeller, also known as a Kort nozzle, is a marine propeller fitted with a non-rotating nozzle. It is used to improve the efficiency of the propeller and is especially used on heavily loaded propellers or propellers with limited diameter. It was developed first by Luigi Stipa (1931) and later by Ludwig Kort (1934). The Kort nozzle is ...
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