SS Stepas Darius was a Liberty ship built in the United States during World War II. She was named after Steponas Darius, a Lithuanian American pilot, who died in a non-stop flight attempt with Lituanica from New York City to Kaunas, Lithuania, in 1933.
Stepas Darius was laid down on 14 August 1944, under a Maritime Commission (MARCOM) contract, MC hull 2320, by J.A. Jones Construction, Panama City, Florida; sponsored by Mrs. Harley Ferguson, wife of assistant general manager JAJCC; and launched on 25 September 1944.
She was allocated to William J. Rountree Company, 9 October 1944. On 27 June 1946, she was laid up in the National Defense Reserve Fleet, in James River Reserve Fleet, Lee Hall, Virginia.
She was sold, on 10 January 1947, to Compania de Navegacion Phocena de Panama, for $562,854.89 and commercial use, she was renamed Mando. She was withdrawn from the fleet on 15 January 1947.
On 21 January 1955, while sailing from Hampton Roads to Rotterdam, with of coal, she ran aground off the Round Island, Scilly Islands, when her engines failed. She was declared a total loss.
Wreck located at: 49.5827°N -6.2015°W