Laid down as MEESHAWN, EFC Hull No: 824, was renamed TENAFLY in April 1919.Renamed to PITTSBURGH BRIDGE and finely assigned the name MOPANG.

Delivered on January 10, 1920 steamed on first voyage south, rounded the Florida cape and headed for New Orleans to load for Rotterdam and London in February 1920.

Late 1920 the MOPANG was allocated to Wyman Steamship Company. Company went bankrupt in the spring of 1921.

The U.S. Shipping Board quickly found a new operator- A.H.Bull & Co. for service to the Black Sea. MOPANG began last Voyage at New York on April 1,1921.

On July 1, 1921 MOPANG stroke a mine some 1.7 miles to the southwest of St.John Island in the Bay of Burgas.

Submarine Boat was a World War I emergency yard, developed and operated by Electric Boat Company. It was designed for the mass production of small steel cargo ships, based on a 150-vessel contract from the U.S. Shipping Board.

This program was cut short after the war and the yard only built 118 ships for the U.S. Shipping Board but built the remaining 32 ships anyway, for a private-sector customer.

The ships were all of a single design, 324 feet long by 40 feet wide, with a nominal deadweight of 5,250 tons.