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flexible barge
A flexible barge is a fabric barge (non-rigid) for the transportation of bulk fresh water or other liquid bulk items such as chemicals or oil.
==History==
One such barge is called the Dracone Barge invented in 1956 and another similar type is called the Spragg Bag invented in the 1980s.
Terry Spragg of Manhattan Beach, California, builds flexible fabric barges for the transportation of bulk fresh water and is the reason why his product is referred to as the "Spragg Bag."〔(Waterbag web-site )〕 In the 1970s Spragg was a promoter of icebergs as a large source of fresh water, but soon realized this was impractical.〔New times, Volume 11, p. 62, Newspaper "Trud", 1978, University of Michigan, Google Digitized Jan 30, 2008〕 He then put his skills into developing the waterbag technology starting in the 1980s. Spragg has worked on and perfected this over the last twenty years with his associates. The first field test of his waterbag was in December 1990.〔(Waterbag History and Technology )〕 The waterbag was 75 meters long (245 feet) and it contained approximately of fresh water. It was towed from the Port Angeles harbor in the state of Washington. Another test was done in 1996 with a voyage from Port Angeles to Seattle, Washington. 〔Gleick, p. 203〕 This test ended on April 29 when the fabric of one of the two bags under tow developed a tear. Spragg says that his next goal is to run another test voyage demonstration between Northern and Southern California and a demonstration of the waterbag technology in the Middle East as well as around the world. There are various reasons why it has been difficult to gain support for demonstrating the viability of waterbag technology in California and around the world.〔(Aguanomics: Persistance – and Baggs ), February 14, 2009〕〔(Aguanomics: Fear and Water Managers ), September 18, 2009〕 Spragg claims when two waterbags pass underneath the Golden Gate Bridge for the first time in history the media will let the whole world know about it.〔Emily Bouckaert (Freshwater Delivery in the Wake of Natural Disasters ), Circle of Blue, March 25, 2010〕〔San Francisco Chronicle, August 6, 1999〕〔(Gulf oil spill: Should the U.S. Army Corps start dredging? ), Los Angeles Times – Environment, May 20, 2010〕 A novel, ''Water, War, and Peace,'' has been completed that details the solutions waterbag technology offers to the complex political problems surrounding water issues throughout the Middle East, the United States, and the world.〔(Water, War, and Peace (a novel) )〕〔(Water, War, and Peace by Terry G. Spragg & Associates, 1996 )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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