After being laid up at Southampton, she was sold on 15 May 1936 for scrap to Thos W Ward.
 However, due to a stipulation in her original agreement of being a prize of war handed over to the White Star Line as compensation for lost tonnage, she could not be sold to Thos W. Ward, so an exchange was set up where the shipbreakers were given 24 outmoded destroyers as compensation for the equivalent scrap value of Majestic.
In July 1936 the ship was converted into a Boys' and Artificers' training ship and renamed HMS Caledonia.

The conversion of Majestic was undertaken at Southampton and comprised the shortening of her masts and funnels so that she could pass beneath the Forth Bridge, and a reduction in the number of lifeboats.

On 8 April 1937, Caledonia departed Southampton for her new base in Rosyth and was commissioned on 23 April 1937, with a capacity of 1,500 trainees.
The conversion of the liner meant that 100 Officers, 180 Chief Petty officers and petty officers, 300 ship's company, 1500 Seamen Boys and 500 Artificer Apprentices could be accommodated on board.
By the end of 1937 there were 800 Seamen Boys and 230 Apprentices on the ship's books.
At the peak of her training career during 1938–1939, her books were full.

After the outbreak of World War II, the trainees were removed to accommodation ashore and the ship's berth was emptied for Naval use.
Caledonia was temporarily anchored in the Firth of Forth pending a decision as to her disposal.

On 29 September 1939, Caledonia caught fire and burnt out, sinking at her moorings.
The wreck was sold in March 1940 to Thos W Ward for scrap, but it was not until 17 July 1943 that the remains of Caledonia were raised and towed to the scrapyard.
 The bell was later placed in St Nicholas Church, Dereham.
After being laid up at Southampton, she was sold on 15 May 1936 for scrap to Thos W Ward.  However, due to a stipulation in her original agreement of being a prize of war handed over to the White Star Line as compensation for lost tonnage, she could not be sold to Thos W. Ward, so an exchange was set up where the shipbreakers were given 24 outmoded destroyers as compensation for the equivalent scrap value of Majestic. In July 1936 the ship was converted into a Boys' and Artificers' training ship and renamed HMS Caledonia.
The conversion of Majestic was undertaken at Southampton and comprised the shortening of her masts and funnels so that she could pass beneath the Forth Bridge, and a reduction in the number of lifeboats.
On 8 April 1937, Caledonia departed Southampton for her new base in Rosyth and was commissioned on 23 April 1937, with a capacity of 1,500 trainees. The conversion of the liner meant that 100 Officers, 180 Chief Petty officers and petty officers, 300 ship's company, 1500 Seamen Boys and 500 Artificer Apprentices could be accommodated on board. By the end of 1937 there were 800 Seamen Boys and 230 Apprentices on the ship's books. At the peak of her training career during 1938–1939, her books were full.
After the outbreak of World War II, the trainees were removed to accommodation ashore and the ship's berth was emptied for Naval use. Caledonia was temporarily anchored in the Firth of Forth pending a decision as to her disposal.
On 29 September 1939, Caledonia caught fire and burnt out, sinking at her moorings. The wreck was sold in March 1940 to Thos W Ward for scrap, but it was not until 17 July 1943 that the remains of Caledonia were raised and towed to the scrapyard.  The bell was later placed in St Nicholas Church, Dereham.
RMS Majestic (1914)