page_title: Type B ship
section_title: Concrete Barge
hierarchical_section_title: Type B ship / World War II barge types / Concrete Barge
caption_attribution_description: National Waterways Museum, Ellesmere Port, Cheshire
context_page_description: The Type B ship is a United States Maritime Administration designation for World War II barges. Barges are very low cost to build, operate and move. Barges were needed to move large bulky cargo. A tug boat, some classed as Type V ships, could move a barge, then depart and move on to the next task. That meant the barge did not have to be rushed to be unloaded or loaded. Toward the end of World War 2, some ships that had not been completed in time for the war were converted to barges. US Navy barges are given the prefix: YWN or YW. Due to shortage of steel during World War II, Concrete Ship Constructors were given contracts to build concrete barges with the prefix YO, YOG, YOGN. Built in 1944 and 1945, some were named after elements.
context_section_description: Built by Concrete Ship Constructors in National City, California in 1944 and 1945. These were a type of concrete ship. Steel shortages led the US military to order the construction of small fleets of ocean-going concrete barge and ships. Typical Displacement: 5,636 long tons (5,726 t), full load: 12,910 tons. Length:366 ft 4 in (111.66 m),  beam: 54 ft (16 m), draft: 26 ft (7.9 m), crew 52 officers and men. Ship armament 1 to 4 40 mm AA gun Concrete Ships were fitted as needed. Some had diesel-electric power generators for refrigeration or tool use. Others were used to store fuel or water (up to 60,000 barrels). Some were used for water distilling. Others were the Quartermaster general store.
  Type MC B7-A2 tank barges made by Concrete Ship Constructors Inc in National City CA.
  B7-A2 were 5,786 deadweight tons concrete barges.
  YOGN-42 Sunk by Japanese submarine I-39
  YOG-85
  YO-144
  YOG-40
  YOG-41
  YOG-42
  YOG-64  Service history unknown, now wrecked at the Staten Island boat graveyard, currently known as the Donjon Iron and Metal Scrap Facility
  YO-145
  YO-146  Sank in accident July 1957
  YOG-53
  YO-159  Sank by Japanese submarine RO-42 off New Hebrides 14 Jan 1944
  YO-160  Atomic bomb test at Bikini Atoll on 25 Jul 1946
  YO-161  Sank Eniwetok 29 Nov 1946
  YO-162
  YO-163
  YO-182
  YO-183
  YOGN-82  Sunk on June 23, 2018 to form an artificial reef in Powell River, B.C.
  YO-184  Sank at Eniwetok during typhoon Sep. of 1946
  YO-185  Sank off Saipan 16 March 1946.
  YOG-83  Sank in off Kwajalein 16 Sep. 1948.
  YO-186  Sank at sea off Guam 5 April 1948.
  YO-187  Lost by grounding off Midway Island in 1957
  YOG-84 Lost during typhoon at sea off Saipan 14 Nov 1948
  Type B5-BJ1 were covered dry cargo barges. They were 265 feet long with a deadweight of 1,632 tons.
  Barium
  Helium
  Nitrogen
  Radium
  Argon
  Cadmium
  Chromium
  Cobalt
  Iridium
  Lithium
  Magnesium
  Neon
  Nickel
  Phosphorus
  Sodium
  Sulphur
  Tellurium
  Tungsten
  Uranium
  Bismuth
  Bromide
  Hydrogen with reefer storage
  Calcium  with reefer storage
  Antimony with reefer storage
  Cerium  maintenance barges
  Radon maintenance barges
  YOGN 104 built by Alabama Dry Dock 	Mobile AL Ex-C 105, disposed of 1947
  1950s Built by Trinity Industries in Nashville TN, 165 feet long, 245 tons.
  YOGN-110
  YOGN-111
  YOGN-112
  YOGN-113
  Built by Albina Engine & Machine in Portland OR, 165 feet long, 245 tons.
  YOGN-114
  YOGN-115 used to support cooling efforts at the Fukushima Daiichi nuclear power 
  YOGN-116
  YOGN-117
  YOGN-118
  YOGN-119 renamed YON 367, sunk as target 1973
  YOGN-120 renamed Ex-BG 1165, sunk as target 1978
  YOGN-121
  YOGN-122 Ex-BG 8452, scrapped 1986
  YOGN-123 Ex-BG 6380, YON 252
  YOGN-124 Ex-BG 6383, struck 2006
  YOGN-125 Ex-YWN 154, now YON
  Built by Manitowoc SB in Manitowoc WI, 174 feet long, 440 tons.
  YOGN-196 renamed Ex-YO 196, sunk as target 2000
  Trefoil-class concrete barge
  Type: B7-D1 were built by Barrett & Hilp in South San Francisco, California. They had a tonnage of M.C. Deadweight: 5,687, Full Load: 10,970 pounds.
  Dimensions: Length: 366'4" by Beam: 54' with max. Draft: 26' 
  Trefoil
  Quartz
  Silica
  Carmita (ex-Slate)
  Asphalt
  Bauxite
  Limestone
  Feldspar
  Marl
  Barite
  Lignite
  Cinnabar
  Corundum
  B7-A1
  B7-A1 were 5,786 deadweight tons concrete barges.
  MacEvoy Shipbuilding Corp. of Savannah, Georgia made seven B7-A1 concrete barges in 1944.
  San Jacinto Shipbuilding Corp. of Houston TX made four B7-A1 concrete barges in 1943.
  C1-S-D1
  C1-S-D1 were made by McCloskey & Company in Hookers Point, Tampa, Florida in 1944. McCloskey built 24 C1-S-D1. Many were sunk after the as war as breakwater barriers. B7-A1 were 5,004 deadweight tons concrete barges.
  Name  -  Completed  -  Fate
  Vitruvius 	 		Dec-43 	Sunk as a breakwater at Normandy
  David O. Saylor 	 	Nov-43 	Sunk as a breakwater at Normandy
  Arthur Newell Talbot 	 	Feb-44 	Sunk as a breakwater at Kiptopeke VA
  Richard Lewis Humphrey 	 	Mar-44 	Sold in Mexico
  Richard Kidder Meade 	 	Mar-44 	Sunk as a breakwater at Kiptopeke VA
  Willis A. Slater 	 	Feb-44 	Sunk as a breakwater at Kiptopeke VA
  Leonard Chase Watson 	 	Jun-44 	Sunk as a breakwater at Kiptopeke VA
  John Smeaton 	 	 	Apr-44 	Afloat as a
caption: WW2 concrete barge at the National Waterways Museum, Ellesmere Port, Cheshire, UK
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