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Black River
"Black River".
( Photo thanks to Jim Scates )
 "Ponca City" ex. "Black River" off Staten Island, New York.
( Photo Collection: Edward O. Clark )
( Source: Steamship Historical Society of America )
"Marine Leader" ex. "Ponca City" ex. "Black River".
( Photo Copyright Reserved )
"Potomac" ex. "Maxton" ex. "Marine Leader" ex. "Ponca City" ex. "Black River".
"Potomac" ex. "Maxton" ex. "Marine Leader" ex. "Ponca City" ex. "Black River",
Bremerhaven, Germany, 07-1967.
( Photo by Gerhard Mueller-Debus )
"Potomac" ex. "Maxton" ex. "Marine Leader" ex. "Ponca City" ex. "Black River",
Bremerhaven, Germany, 07-1967.
( Photo by Gerhard Mueller-Debus )
"Potomac" ex. "Maxton" ex. "Marine Leader" ex. "Ponca City" ex. "Black River", in 1979.
"Potomac" ex. "Maxton" ex. "Marine Leader" ex. "Ponca City" ex. "Black River", in 1979.
 "Potomac" ex. "Maxton" ex. "Marine Leader" ex. "Ponca City" ex. "Black River", sadly not a sharp photo.

History :
Built by Alabama Dry Dock & Shipbuilding Co., Mobile, Alabama.
Yardnumber 353. UMSC No. 2862. Off. nr. 248800.
Keel laid 03-07-1945. Launched 20-09-1945. Completed 30-10-1945. Gr. 10172 t., Net. 6423 t., Dw. 16613 t. L.o.a. 159,57 m., Br. 20,78 m., Dr. 11,93 m. Engine: 2 steam turbines, manufactured by General Electric Company, Lynn, Massachussetts. 7240 B.h.p., 5401 kW. Speed 15 knots. 26 Tanks.
BLACK RIVER-1945 completed for United States War Shipping Administration, Mobile Alabama, USA.
PONCA CITY-1947 for Continental Oil Company, Wilmington, Delaware, USA.
MARINE LEADER-1948 for Marine Corporation, Wilmington, Delaware, USA.
MARINE LEADER-1954 for Marine Navigation Company, Wilmington, Delaware, USA.
MAXTON-1956 for Waterman Steamship Corporation, Mobile, Alabama, USA.
MAXTON-1960 for Transocean Petroleum Carriers Inc., Wilmington, Delaware, USA.
POTOMAC-1962 for Empire Transport Inc., New York, USA.
Additional Reports:
Reported Potomac lengthened, widened and converted into bulker in 1962 by re-construction with new cargo section and mid-section built by Lino Shipbuilding & Engineering Company, Maizuru.
New Dimensions 6 Holds, 6 Hatches, 174.4 / 168.1 x 22.9 m, 13858 grt / 22251 dwt.
Reported Nevada Potomac sold to shipbreakers in Pakistan. Arrived Rashid Ltd., Gadani Beach 3 Nov. 1982 to be broken up. Work began 23 Nov. 1982.

History and notes:
August 1962, converted to bulk carrier. New midship section built by Iino SB & E Co., Maizuri, Japan (new measurements: 572ft x 75ft 2in, 13,858GRT, 21,900DWT).
In April 1956 and experiment was made with a new method of cargo carrying whereby loaded containers were carried on a specially designed deck constructed on a tanker in a "lift on-lift off" role.
The service, the forerunner of the container ship, involved the loading and sealing of a container at the factory, dispatch to the dockside and lifting of the container from its chassis to the deck of the ship. At the point of unloading, another chassis would be waiting for the container to be lifted onto it for hauling away by road.
Two T2 tankers, Potrero Hills (Marinship Yard No. 68) and Whittier Hills (Marinship Yard No. 71), units of the Pan-Atlantic SS Corp., an associate company of the Waterman SS Corp., were sent to Bethlehem Steel Co's yard at Baltimore in 1955 for alteration, and further ships, Coalinga Hills (Marinship Yard No. 61) and Maxton (Alabama Yard No. 353) werer acquired in 1956. The specially constructed deck fitted to the tankers was capable of carrying fifty-eight loaded containers each 33ft long. In no way was the oil carrying capacity of the ships affected. The service between Port Newark and Houston began with the inaugural sailing of Ideal
X (ex-Potrero Hills), although the initial run was made previously by Maxton.
Source: Victory Ships and Tankers, by L. A. Sawyer and W. H. Mitchell