SS Mulbera was a British India Steam Navigation Company (BI) turbine steamship that was built in 1922 and scrapped in 1954.

[1] Between 1913 and 1917 BI took delivery of nine "M" class twin-screw steamships: seven built by Barclay, Curle & Co in Glasgow, Scotland, and two by Swan, Hunter and Wigham Richardson in Wallsend, England.

[3] In 1921 and 1922 BI took delivery of a final six "M" class ships, all with geared steam turbines.

Mulbera was unique, being the only "M" class ship built by Alexander Stephen and Sons.

[12] From December 1924 to April 1925, the Duke and Duchess of York toured Kenya, Uganda, and Sudan.

[13] Victoria Drummond, the first woman to qualify as an engineer officer in the UK, served on Mulbera from April 1927 until December 1928.

While Drummond served on her, Mulbera made one voyage to East Africa, and four to India and Ceylon.

[12] On 8 June 1932 Mulbera collided with the British steamship Zitella at Kruisschans Scluis when approaching Antwerp.

On 11 October that year she grazed the pier head while entering King George V Dock, London.

[6] In the Second World War Mulbera remained in passenger service, but under the direction of the British Indian government.

[6] On 4 June 1942 the Japanese submarine I-27 torpedoed the Australian ore carrier Iron Crown about 44 nautical miles (81 km) south-southwest of Gabo Island, New South Wales.

[16] On 7 April 1954 BI sold Mulbera for £64,000 to the British Iron & Steel Corporation.