Algorab decommissioned on 3 December 1945 and was delivered to the Maritime Commission on 30 June 1946 for disposal, purchased by Wallem & Co. on 4 April 1947 for commercial service.

Algorab served in the Atlantic with voyages to Iceland and the Caribbean until transporting Army troops to the Pacific in 1942 and remaining there with the exception of returning for the landings in North Africa.

[4][5][note 2] Mormacwren was launched on 15 June 1939 sponsored by Miss Barbara Ann Moore, the fourteen-year-old daughter of Moore-McCormack Lines' President.

With fuel capacity of 1,500 long tons (1,524 t) cruising range was approximately 20,000 miles (32,186.9 km) at a normal speed of 15.5 knots (28.7 km/h; 17.8 mph).

At the time this was the most powerful marine diesel built in the United States and was capable of operating two hours under 25% overload for 7,500 horsepower.

While conducting a tactical maneuver in convoy on 11 September, she collided with USS Harris and suffered extensive damage in the forepart of the ship.

[1] Her repairs completed on 7 October, Algorab loaded and proceeded in company with Transport Division (TransDiv) 5 to Mehdia, French Morocco.

From 1 July to 17 August, she made more voyages carrying troops and equipment between Guadalcanal; Hollandia, New Guinea; New Caledonia; and Espiritu Santo.

On 15 September, the attack cargo ship sailed to Newcastle, Australia, for amphibious warfare training exercises.

She reached San Francisco on 30 September for major engine repairs and hull alterations at the Moore Dry Dock Company, Oakland, California.

She left drydock on 30 January 1945 and, following engine trials, sailed on 5 February en route to Leyte, Philippines.

The ship paused at Eniwetok to join a convoy; put in at Leyte on 4 March; and, upon her arrival, began onloading ammunition, vehicles, and provisions earmarked for the Ryukyus campaign.

She made a brief stop in Saipan, reached Pearl Harbor on 24 April, and underwent another period of engine repairs before the vessel sailed on 10 May for San Francisco.

[1] Algorab was declared surplus and returned to the Maritime Commission on 30 June 1946 for layup at Suisun Bay awaiting sale.