Kildonan Castle: was built in 1899 by Fairfield Shipbuilding & Engineering Co. She was the last mail ship to be completed for the Castle Line before the merger, but commenced her career as H. M. Transport 44 for use during the Boer War. On her maiden voyage she carried 3000 troops to Cape Town and in December 1900 was used as a prisoner of war ship at Simonstown. During 1901 she returned to Fairfields for completion before undertaking her first commercial mail sailing on 7th December. At the end 1920 she was refurbished and returned to the mail run where she remained until replaced by the Carnarvon Castle in 1936 and put in reserve. When the building of the Dunbar Castle was delayed in January 1930 she was deployed on the Intermediate run until May when she was laid up at Netley pending disposal. In May 1931 she was sold for £11,250 and broken up in Norway.