In 1904, the Natal Harbours Department placed a single 0-6-0 saddle-tank locomotive in service at Durban Harbour. It was built by Hunslet Engine Company of Leeds and was numbered as well as named, no. 4Sir Albert, after Sir Albert Henry Hime, Prime Minister of Natal from 1899 to 1903.
According to some sources, Sir Albert was later renumbered to 46. It does not appear to have been taken onto the Natal Government Railways (NGR) roster.
When the Union of South Africa was established on 31 May 1910, the three Colonial government railways (Cape Government Railways, NGR and Central South African Railways) were united under a single administration to control and administer the railways, ports and harbours of the Union. Although the South African Railways and Harbours came into existence in 1910, the actual classification and renumbering of all the rolling stock of the three constituent railways were only implemented with effect from 1 January 1912.
Sir Albert was still in service at the harbour in 1912. Since the locomotive was considered obsolete, it was renumbered to 046 and not classified on the SAR. It kept on working at Durban Harbour until it was withdrawn from service in 1915.
^ abEspitalier, T.J.; Day, W.A.J. (1944). The Locomotive in South Africa - A Brief History of Railway Development. Chapter III - Natal Government Railways (Continued). South African Railways and Harbours Magazine, September 1944. pp. 670-671.
^The South African Railways - Historical Survey. Editor George Hart, Publisher Bill Hart, Sponsored by Dorbyl Ltd., Published c. 1978, p. 25.
^ abClassification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer’s Office, Pretoria, January 1912, pp. 11, 13, 18. (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000)
^Dulez, Jean A. (2012). Railways of Southern Africa 150 Years (Commemorating One Hundred and Fifty Years of Railways on the Sub-Continent - Complete Motive Power Classifications and Famous Trains - 1860-2011) (1st ed.). Garden View, Johannesburg, South Africa: Vidrail Productions. p. 26. ISBN9 780620 512282.