The refit saw the exhibition replaced by workshops, laboratories, offices and cabins, plus a desalination plant since the Monte Bello Islands did not have any indigenous fresh water source to supply the 1500 personnel who would take part in the test. Four other ships were directly involved in the test, the landing ships "Narvik", "Zeebrugge", "Tracker" and the frigate, "Plym". "Tracker" was designated as the health ship and extensively equipped with decontamination facilities, whilst the weapon was to be detonated aboard "Plym". The flotilla was under the overall command of Rear Admiral Arthur David Torlesse. Heavily laden with crated equipment and deck cargo, including three Westland Dragonfly helicopters and two Sea Otter aircraft and deck cargo, the re-commissioned "Campania" departed from Portsmouth for the islands on 2 June 1952. Eighty-five scientists were also on board as passengers, around half directly involved in British nuclear programme and the remainder from other parts of the British civil service. The vessel arrived at the Monte Bello Islands on 8 August after calling into Gibraltar, Cape Town, Mauritius and Fremantle and the next two months were spent preparing for the test, which took place on 3 October. "Campania" was not found to be particularly suitable as the main base for the test, partly because it was hot and cramped, and partly because there were insufficient boats for ferrying them between the ship and the shore and the eight pinnaces intended to perform about a third of the work could not moor close to the ship at night because the water was too choppy. Most of the scientists and engineers soon moved to tented accommodation ashore. The ship was decommissioned for the final time in December 1952 following her return to the United Kingdom, and sold and scrapped in Blyth in 1955.