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The history of water supply and sanitation is one of a logistical challenge to provide clean water and sanitation systems since the dawn of civilization. Where water resources, infrastructure or sanitation systems were insufficient, diseases spread and people fell sick or died prematurely. Astronaut Jack Lousma taking a shower in space, 1974.
Water storage. Water storage is a broad term referring to storage of both potable water for consumption, and non potable water for use in agriculture. In both developing countries and some developed countries found in tropical climates, there is a need to store potable drinking water during the dry season. In agriculture water storage, water is ...
Water purification is the process of removing undesirable chemicals, biological contaminants, suspended solids, and gases from water. The goal is to produce water that is fit for specific purposes. Most water is purified and disinfected for human consumption ( drinking water ), but water purification may also be carried out for a variety of ...
The Iowa class was a class of six fast battleships ordered by the United States Navy in 1939 and 1940. They were initially intended to intercept fast capital ships such as the Japanese Kongō class and serve as the "fast wing" of the U.S. battle line. [ 3][ 4] The Iowa class was designed to meet the Second London Naval Treaty 's "escalator ...
An animated depiction of the Nilgiri-class frigate, showing its starboard.. The frigates were designed by the Warship Design Bureau (formerly Directorate of Naval Design) – an internal establishment within the Indian Navy responsible for designing warships; the organisation is also distinguished for having contributed to the designing of numerous Indian warships, including INS Vikrant ...
1 × 5-inch (127 mm) / 25 caliber deck gun [ 4] Bofors 40 mm and Oerlikon 20 mm cannon. The Balao class was a design of United States Navy submarine used during World War II, and with 120 [ 2] boats completed, the largest class of submarines in the United States Navy. An improvement on the earlier Gato class, the boats had slight internal ...
The America class (formerly the LHA(R) class) is a ship class of landing helicopter assault (LHA) type amphibious assault ships for the United States Navy (USN). The class is designed to put ashore a Marine Expeditionary Unit using helicopters and MV-22B Osprey V/STOL transport aircraft, supported by AV-8B Harrier II or F-35 Lightning II V/STOL aircraft and various attack helicopters.
The Astute class is the latest class of nuclear-powered fleet submarines in service with the Royal Navy. [2] The boats are being constructed by BAE Systems Submarines at Barrow-in-Furness . [ 6 ] Seven boats will be constructed: the first of class, Astute , was launched by Camilla, Duchess of Cornwall , in 2007, [ 7 ] commissioned in 2010, and ...