S.S. City of Pittsburg:

The S.S. City of Pittsburg was a 7,377 GRT Steel Screw Steam Tanker built at Palmers Shipbuilding and Iron Company Limited (Yard No. 919) Jarrow, England for the Ellerman Lines, Ltd. (Hall Line, Ltd. managers). The ship was launched on 21 July 1921 and completed in January of 1922 with a length of 465.7-feet, beam of 58.6-feet, and draught of 31.8 feet. Propulsion was provided by three 225-PSI Scottish Boilers provided Palmer's Co. Ltd., Newcastle, connected to 3 Double-Reduction turbines geared to a single shaft and propeller for a speed of 12.5 knots.
The "S.S. City of Pittsburg" (date and location unknown).
Information concerning the ship's history prior to World War II is fairly limited. Research has found one reference that the ship was scheduled to sail from Melbourne, Australia in January of 1925 as part of the Ellerman & Bucknall S.S. Co. Ltd. (see newspaper clipping below). The John H. Marsh Maritime Collection also holds pictures of the City of Pittsburg in South Africa between 1922 and 1930, so it is known that the ship made port calls there during the inter-war years.
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Clipping from "The Argus", Melbourne, Australia, dated Thursday, 04 December 1924
Upon commencement of the hostilities at the beginning of the Scond World War, many of the Ellerman Lines ships were requisitioned for use during the war by the British Ministry of War Transport (MoWT). The Ellerman Line would eventually lose 60 ships of their 105 ship fleet during the war.

The City of Pittsburg is known to have made at least 118 sailings between January 1939 and the time of her loss on 11 January 1942, mostly steaming independently (unescorted). The ship did however, sail on 10 wartime convoys during the war. A list of the ship's voyages can be viewed here. (Opens in new window)
The "City of Pittsburg" circa. 1922
The Loss of the S.S. City of Pittsburg:

The specific details concerning the loss of the ship have not been located to date. However, it is known that on 11 January 1942, the City of Pittsburg was wrecked in the Great Pass channel at Alexandria (The Great Pass is one of two entrances to the Alexandria Harbour.) while enroute from Montreal to Trinidad, Table Bay, Port Said and Alexandria carrying a cargo of 6000 tons of flour, wheat, potatoes, and ammunition, which was later salvaged.

As the ship is no longer located in the channel, it can be safely assumed that it was salvaged and removed at an, as of yet, unknown date.
The "S.S. City of Pittsburg" wrecked in the Great Pass channel, Alexandria 1942
View the navigation chart for Great Pass and Approaches to Alexandria here. (Opens in new window.)
UK
City of Pittsburg
The Argus 1924
City of Pittsburg 1922
City of Pittsburg wrecked at Alexandria 1942
Alexandria
Shipwrecks of Egypt Custom Products