[<< wikipedia] Type B ship
The Type B ship is a United States Maritime Administration (MARAD) 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.

== World War II barge types ==

=== Steel Barge ===
Built by Alabama Drydock and Shipbuilding Company in Mobile, AL, Type Coal,  Design # 1039
USSB # 301 Name	Darien Barge sold to Debardeleben Marine III, Texas in 1969
USSB # 302 Name	Mamai Barge sold renamed Patricia Sheridan in 1969
Built by Union Bridge & Construction Company in Morgan City, LA, Design #1067
USSB #2005   	Barge
USSB #2006   	Barge
USSB #2007   	Barge
Built by Nashville Bridge Company in Nashville, TN, Design # 1096
USSB #2776   	Barge, Tank
USSB #2777   	Barge, Tank
USSB #2778   	Barge, Tank
USSB #2779   	Barge, Tank

=== Freight Barges -YF - YFN ===
Most YFN barges were not self-propelled. YF barges were self-propelled. A YFN could carry a load of 550 long tons. YFN worked near shore and had a steel hull. They worked in harbors, rivers and other protected waters.  They were 110 feet long, had a 32-foot beam and maximum draft of 8 feet.  
The Pacific Bridge Company built 27 YFN Freight Barges in 1943: YFN 576 to YFN 603. Pollock-Stockton Shipbuilding Company built: FN 619 to FN 742 YFN 998 to YFN 1016.

=== Refrigerated Freight Barges YFR - YFRN ===
Most YFRN Barges were not self-propelled. YFR Barges were self-propelled. Olson & Winge of Seattle WA made 10 YFRN: YFRN-833 to YFRN-841 in 1943, for the war. Defoe Shipbuilding Company of Bay City, Michigan built three: YFR-888, YFR-889 and YFR-890 in 1945. Long Beach Naval Shipyard of Long Beach, California built the YFRN-997 in 1945. A few barges were converted to refrigerated barges, also called a reefer barge.

=== Repair Barges ===

Yard Repair Berthing and Messing are repair Barges type TR, YR, YRB, YRBM, YRDH, YRDM, YRR, LBE were built for World War 2. Repair Barges were self sustaining, 530 tons and 153 feet long. Built in 1944, they had a beam of 36 feet and a draft of 6 feet. Repair Barges had a machine shop and living quarters. They repaired small boats and craft. The barge had generators, a distilling plant, an air compressor and steam boiler. The living space had berths, a mess hall to support a crew of 48 men.
Floating Workshops are YR, 96 built, 24 built before ww2
Repair and Berthing Barges are  YRB, 36 built
Repair, Berthing and Messing Barges were YRBM, 56 built
Dry-Dock Workshops - Hull are YRDH, 8 built
Dry-Dock Workshops - Machinery are YRDM, 8 built
Radiological Repair Barges are YRR, 14 built. Used to support nuclear plant overhauls of nuclear ships and submarines, also refueling and decontamination of used equipment.
LBE Landing Barge, Emergency repair used in WW2 to repair landing craft.
YRR are Radiological Repair Barges, 14 built. Used to support nuclear plant overhauls of nuclear ships and submarines, also refueling and decontamination of used equipment. YRBM-18 (formerly APL-55) received the Presidential Unit Citation for service during the Vietnam War from 6 December 1968 to 31 March 1969.

=== Barracks Barge ===
US Navy Barracks Barges, also called berthing barge was 1,300 tons and 261 feet long. They were used as a temporary barracks for sailors or other military personnel. A barracks ship also saw use as a receiving unit for sailors who needed temporary residence prior to being assigned to their ship. Barracks Barges are a type of auxiliary ship, called an APL for auxiliary personal living.
APB-35 to APB-51 Barracks Ships were propelled vessels built in 1944. APB had a full load displacement of 2,190 tons. APB are Benewah-class ships, a sample is USS Benewah.
APL-1 to 58 are Non-self-propelled Barracks Ships built in 1944 and 1945. APL displaced 2,600 tons at full load. Dimensions are 261.2 feet long, 49.2 feet beam, draft 8.5 feet when fully loaded. WW2 armament was four 20mm guns. Crew quarters could accommodate 71 officers and 583 men. Some are still in use. Sample see USS Mercer (APL-39).
APL-59 to APL-72 are post WW2 Barracks Ships.

=== Landing Barge, Kitchen ===
Landing Barge, Kitchen or LBK, was a landing craft used to support amphibious landings in Northwestern Europe during and after the Normandy invasion of Second World War. Its primary purpose was to provide hot meals to the crews of the many minor landing craft not fitted with galley facilities. Constructed of steel, this shallow-draft lighter had storage and serving space to feed 900 men for one week. The kitchen capacity was able to provide 1,600 hot meals and 800 cold meals a day. They were used by both the US and British on D-Day.

=== Landing Barge, Vehicle ===
Landing Barge, Vehicle (LBV 1, mark 1) was a barge with a ramp added to load and unload vehicles like: jeeps and trucks during World War 2. A nine-foot, four-inch ramp was added to the stern for loading and unloading. LBV 2, Mark 2, had an engine that could propel the LBV at 4.5 knots. They were powered by 2 Chrysler RM Gas engines and were used by both the US and British on D-Day. Built in three sizes: small (S) 70 feet long, medium (M) 78 feet long and large (L) 82 feet long. Each had a draft of about 4 feet when loaded.

=== Landing Barge, Oiler ===
Landing Barge, Oiler (LBO) and YO and YON stored fuel oil or diesel fuel for landing craft. They had a 40-ton fuel tank, with two compartments and an engine that could propel them at 4.5 knots. They were used by both the US and British on D-Day.

=== Landing Barge, Water ===
Landing Barge, Water (LBW or YW) a barge with a 33-ton fresh water tank and an engine that could propel them at 4.5 knots. They were World War 2 landing support vessels. Used by both the US and British on D-Day.  YWN are non-self propelled. 

=== Landing Barge, Flak ===
Landing Barge, Flak (LBF) a Landing Barge with a 40mm anti-aircraft gun, manned by a crew of five. Also had Two 20-mm Hispano AA guns or two twin Lewis guns. The LBF were 60 to 90 feet long. They could transport 15 troops. Used by both the US and British on D-Day.

=== Deck barge ===

Deck barges offered a large flat platform, on which many types of gear could be moved. The only downside was the cargo had a slightly higher center of gravity. A number of shipyards built deck barges. Kyle and Company built of Stockton, California built US Army BC 522 to BC 535 deck barges in 1942, that had a length of 110 feet, a beam of 35 feet, a draft of 6 feet, light displacement of 170 tons, full displacement of 500 tons, and deadweight of 330 tons.

=== Concrete Barge ===
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-64  Service history unknown, now wrecked at the Staten Island boat graveyard, currently known as the Donjon Iron and Metal Scrap Facility
YO-146  Sank in accident July 1957
YO-159  Sunk 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
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 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 1948Type B5-BJ1 were covered dry cargo barges. They were 265 feet long with a deadweight of 1,632 tons.

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.
Built by Albina Engine & Machine in Portland OR, 165 feet long, 245 tons.
YOGN-115 used to support cooling efforts at the Fukushima Daiichi nuclear power 
YOGN-119 renamed YON 367, sunk as target 1973
YOGN-120 renamed Ex-BG 1165, sunk as target 1978
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 2000Trefoil-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' 

Carmita (ex-Slate)
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 breakwater at Powell River BC
Joseph Aspdin 	 	 	May-44 	Wrecked and lost 1948
John Grant 	 	 	Jun-44 	Sunk as a breakwater at Kiptopeke VA
M. H. Le Chatelier 	 	1055 	Jul-44 	Afloat as a breakwater at Powell River BC
L. J. Vicat 	 	 	Jul-44 	Afloat as a breakwater at Powell River BC
Robert Whitman Lesley 	 	1057 	Jul-44 	Sunk as a breakwater at Kiptopeke VA
Edwin Thacher 	 	 	Jul-44 	Sunk as a breakwater at Kiptopeke VA
C. W. Pasley 	 	 	Aug-44 	Sunk as a breakwater at Newport OR
Armand Considere 	 	Sep-44 	Afloat as a breakwater at Powell River BC
Francois Hennebique 	 	Sep-44 	Sunk as a breakwater at Newport OR
P. M. Anderson 	 	 	Sep-44 	Afloat as a breakwater at Powell River BC
Albert Kahn 	 		Oct-44 	Abandoned and lost 1947
Willard A. Pollard 	 	Nov-44 	Sunk as a breakwater at Kiptopeke VA
William Foster Cowham 	 	Nov-44 	Sunk as a breakwater at Kiptopeke VA
Edwin Clarence Eckel 	 	Dec-44 	Scuttled 1946
Thaddeus Merriman 	 	Nov-44 	Afloat as a breakwater at Powell River BC
Emile N. Vidal 	 	 	Dec-44 	Afloat as a breakwater at Powell River BC

=== Wood Barge ===

A number of different types of wood barges were used in the war. A flat bottom wood barge could be used in shallow ports or be towed onto beaches. They were low cost to build and could be abandoned after used if needed. To stop wooden hull rot many had copper-sheathed hulls. With the shortage of steel, a fleet of wood barges was built and a fleet of concrete barges were also built.
YS-110 was a 80-foot wood barge with a 40-foot beam. She had a flat deck and was built in the Pearl Harbor Navy Yard in 1943.
YS-88 was a 100-foot wood barge with a 42-foot beam. Built in the Pearl Harbor Navy Yard in 1941.
YC-843 to YC-847 were built by Martha's Vineyard Ship Building Company in Vineyard Haven, MA, 110-foot wood barges for the US Navy at 250 tons in 1942
Built by American Lumber in Millville, Florida
Millville 	 EFC # 2432  USSB Design #1067
Built by Beaumont Shipbuilder & Dry Dock in Beaumont, TX,
Shelbank EFC #2127	 later completed as sailing ship Marie F. Cummins, scrapped in 1947
Shelby EFC #2128 ater completed as sailing ship Albert D. Cummins, scrapped 1947
Built by Coastwise Shipbuilder in Baltimore, MD
Catonsville EFC #2141
Sherwood EFC #2142
Carroll EFC #2143
Built by Cobb & Company, F. in Rockland, ME
Whitehead EFC #2481
Built by Crook, H. E. 	Baltimore MD
Druid Hill EFC #2594
Ruxton EFC #2595
Built by Crosby Navigation in	Richmond, VA
Hallowell EFC #2577
Richmond EFC #2578

== YFNB ==
YFNB Large Covered Lighter, non-self-propelled barge, such as US Navy YFNB_47, a 152 feet, 36 feet beam barge that was used for repair, e.g. YR 47 and YRR 9 .

== YFNX ==
YFNX were Special Purpose Barges, that were non-self-propelled and used at shore. Most were a modified YC or YFN hull. The modified barge gave the craft a specialized use, such as a laboratory, sonar research or stowage for submarine goods.

== YFND ==
YFND or Dry Dock Companion Craft, were non-self-propelled barges. YFND were a special purpose barge used to support the auxiliary floating drydocks, which had little crew support space.

== YFP ==
YFP were Floating Power Barges, a non-self-propelled barge with fuel and a generator to make a mobile power station, and were able to produce up to 20,000 kilowatts of power.

== YOG - YOGN ==
YOG were self propelled Gasoline Barges, with tanks for gasoline that had a capacity of 8,200 Bbls. YOGN were non-self-propelled Gasoline Barges.

== YG ==
YG were Garbage Barges, also called Lighter, and were self-propelled with one direct-drive Atlas diesel engine to a single propeller, 240 shp.

=== YGN ===
YGN were Garbage Barges that were non-self-propelled.

== YPD ==
YPD were Floating Pile Drivers, and were non-self-propelled barges, used to built piers.

== YSR ==
YSR were Sludge Removal Barges, a non-self-propelled sludge removal barge 110 foot long with a 34 foot beam. Built for cleaning fuel oil or other tanks that have sludge and/or foreign matter.

== World War I barge types ==
Many World War I barges were used in World War II, due to the high demand.

=== Steel ===
Built by American Steel Barge Company in Superior, WI, from 1891 to 1945.
YW , YW-1 to YW-132, Water Barge self-propelled
Water Barge non-self-propelled
YWN-145 (was YW-145)
YWN-146 (was YW-146)
YWN-148 ex YON-187
*YWN-156 ex YOGN-116
YWN-157 ex YOG-32

=== Wood ===
Built by Anacortes Shipways in Anacortes, WA in 1918 
USSB Barden type#	1001, LDT 2,551,
USSB Dacula type#	1001, LDT 2,551,
USSB Western Larch I  type# B5-G1
USSB Western Larch II type# B5-G1
USSB Western Larch III type# B5-G1
Built by Allen Shipbuilding in Seattle, WA in 1919, Design # 1115
USSB Allenhurst type 1115
USSB Ahmik type 1115
Built by Coastwise Shipbuilding in Baltimore MD in 1919, design # 1067
USSB  Sherwood
USSB  Catonsville
USSB Carroll
Built by Crook, H. E. in Baltimore MD, design # 1067
USSB Druid Hill (1919)
USSB  Ruxton (1920)
Built by Crosby Navigation in Richmond VA, design # 1067
USSB Hallowell
Built by Gildersleeve Shipbuilding in Gildersleeve, CT, Coal Barge, design#115
Built by Johnson Shipyards in Mariners Harbor, NY, 1919, design#1067
USSB Tompkinsville
Built by Machias Shipbuilding in Machias, ME, 1919, design#1067
USSB  Wellesley
USSB  Jonesport
Built by McEachern Shipbuilding in Astoria, OR, 1920
USSB Cabria
Built by Meacham & Babcock in Seattle WA, 1919, design#1001
USSB  Chalois
USSB  Charnis
Built by Midland Bridge in Houston, TX, 1919, design#1067
USSB  Aransas
USSB  Matagorda
Built by Sloan Shipyards in Anacortes, WA, 1918, design#1001
USSB Cabacan
USSB  Dacula
Built by . Johns River Shipyard Co. in Jacksonville, FL, 1919, design#1067
USSB  Anastasia
USSB  Daytona
USSB  Ormond
Built by Tacoma Shipbuilding in Tacoma, WA, 1918, design#1001
USSB  Dione
Built by Wright Shipyards in Tacoma WA, 1918, design#1001
USSB Endymeon

=== Concrete ===

Concrete Barges were used in WW1. Louis L. Brown built concrete barges at Verplank, New York.
YC-516 - Barge # 1 (Coal Barge #516), built 1918.
YC-442 - Barge # 442 - Built 1918, displacement 922 tons.
For WW1 12 emergency fleet concrete barges were ordered for the war, but they were not completed in time and were sold to private companies.(12 Concrete ships were also built, like the SS Atlantus.)

== Notable incidents ==
YOG 42, Gasoline barge. Under tow by Navajo - AT64, when Navajo was torpedoed and sunk by Japanese submarine I-39 on 12 September 1943, 150 miles East of Espiritu Santo. Recovered by USS Sioux (AT-75).
YO-64 Sank due to enemy action in the Philippines in January 1942.
YO 41 and YO 42 Fuel oil barges. Sank 22 Feb 1942 during enemy action in the Philippines.
YSP- 44, YSP- 46, YSP- 47, YSP- 48, YSP- 49 Salvage barges and the YSR-2, a sludge barge, sank 22 Feb. 1942 during enemy action in the Philippines.
YW-54 Water barge, destroyed in early 1942 in enemy action in the Philippines.
YW-50, YW-55 and YW-58 water barges, captured 10 December 1941 with the surrender of American forces on Guam.
YC-891 Sank on 18 April 1945, while under tow by the tug Mauvila (YT-328) off Key West, Florida.
USS YOG-76 Sank on 13 November 1969 in Cua Viet Cove, South Vietnam after two underwater explosions hit her. Refloated and taken to Da Nang, South Vietnam. Not repaired due to severe damage.
Syncline YO-63 A Bullwheel Class Fuel Oil Barge, Self-propelled, sank in 1972 north of Tahiti.
YW-114 A YW-83 Class Self-propelled Water Barge. Sank when cargo shifted at Tongass Narrows near Ketchikan, Alaska on 12 August 1989.
YF-1079 Ran aground and damaged at Buckner Bay, Okinawa, after Typhoon Louise in October 1945. YF-757 also sank in the storm.
YON-184 Sank at Eniwetok in a typhoon in September 1946.
Winifred Sheridan A sea-going coal barge. Sank with the Mary E. O’Hara a sailing fishing ship after they collided on  January 20, 1941 in blinding snowstorm off The Graves Light.
Chickamauga While under tow by the steamer Samuel Mitchell, she collided with the Mitchell at Houghton Point, Lake Superior on May 18, 1908 in fog.
Dunaj 2 Sank after striking a mine in the Sea of Azov on 29 Sep 1943.
YC21 Sank in a storm on 15 November 1968.
Allegheny Shelled and sunk in the Atlantic Ocean 9.5 nautical miles (17.6 km) east south east of the Metopkin Inlet, Virginia (37°34′N 75°25′W) by U-boat U-754. All three crewmembers were rescued by USCGC CG-4345 ( United States Coast Guard).
YCK-8 Wooden barge sank 2.7 miles off Key West, Florida on 12 December 1943. She was under tow by Army tug LT-4.
USS YO-159 A self-propelled fuel oil barge. Torpedoed and damaged 250 nautical miles (460 km) east of Espiritu Santo (15°27′S 171°28′E) by Ro-42. Two torpedoes hit YO-159's concrete hull, causing the loss of her fuel oil cargo which caught fire. She was scuttled the following day by USS PC-1138.
USS Asphalt (IX-153) An S-class Trefoil concrete barge was wrecked at Saipan, Northern Mariana Islands in a storm.
USS YO-156  and USS YO-157 World War II self-propelled fuel oil barges. Lost at Sitka, Alaska in May 1945.
USS Silica An S class Trefoil concrete barge. Ran aground on  9 October 1945 during a Typhoon Louise off Okinawa.
YON-160 Sank in Operation Crossroads. The fuel oil barge was sunk as a target by an atomic bomb at Bikini Atoll on 25 July 1946.
USS Lignite (IX-162) Wrecked by a typhoon, 9 October 1945.
YC-442, Barge # 442 sank 11 September 1923.

== United Kingdom ==
Thames lighters, or dumb barges, were non-self-propelled barges. The original Thames barges were sailing vessels, many were converted for the war. Some LB vessels had ramps added and were called LBR or Landing Barge, Ramped. Some had engines and rudder added and were referred to as LBV or Landing Barge Vehicle. They were used for different tasks: Landing Barge Oiler (LBO), Water (LBW), Kitchen (LBK) and Emergency Repair (LBE), Landing Barge Flak (LBF) and Gun (LBG). There was also one Landing Barge Cable (LBC). Many brought supplies to Normandy.

== Current barge classes ==
Type B I barge hull. Designed to ensure no uncontrolled release of cargo to the water or atmosphere.
Type B II barge hull. Designed to carry products which require substantial preventive measures to ensure no uncontrolled release of cargo to the water or atmosphere, but only if the release does not constitute a long term hazard.
Type B III barge hull. Designed to transport products classed as minor hazards, thus needing less degree of control.

== See also ==
Barracks ship, barge
Rhino ferry
Ramped cargo lighter
Operation Sea Lion
Victory ships
Liberty ship
Type C1 ship
Type C2 ship
Type C3 ship
United States Merchant Marine Academy
List of auxiliaries of the United States Navy

== References ==

This article incorporates text from the public domain Dictionary of American Naval Fighting Ships.

== External links ==
History of ferro-concrete ships
Comprehensive list of ferro-concrete builders
Images of concrete vessels from the National Monuments Record  Photographic record of the construction and launch of the Cretemanor at Preston and the Seacraft Concrete Co on the Mersey.
"Pour in the Concrete and Take Out a Ship", February 1919 Popular Science
 "How Pour Ships Are Made" , June 1943, Popular Science