Her tonnages were 10,917 GRT and 6,501 NRT,[6] and she had 148,583 cu ft (4,207 m3) of refrigerated cargo space.

[7] Southern Prince had twin screws, driven by a pair of eight-cylinder, double-acting, four-stroke diesel engines built by John G. Kincaid & Company of Greenock.

[10] By mid-August 1940 Southern Prince had joined the 1st Minelaying Squadron at Kyle of Lochalsh (Port ZA), along with four other auxiliary minesweepers, and an escort of destroyers.

[12] On the night of 25–26 August 1941, Southern Prince and other members of the flotilla were between Iceland and the Faroe Islands, returning in convoy from laying minefield SN-70A.

The destroyers HMS Lightning and Lamerton came from Scapa Flow and escorted the damaged ship to The Minch.

[10] Southern Prince had been repaired and returned to service by the end of February 1942, when she and other members of the flotilla were laying minefield SN85 between the Faroes and Iceland.

[12] In June 1944 Southern Prince was Rear Admiral Rivett-Carnac's headquarters ship in the Normandy landings.

She left The Solent on 7 June 1944 with Convoy EWP-1, and anchored off Juno Beach the next day.

In April 1947 she was returned to her owners, who then sold her on to Giacomo Costa fu Andrea.