River steamer Cumberoona in dry dock at Mannum. This vessel was built at Echuca in 1866

Built at Echuca in 1866 by G. Linklater Cumberoona was an iron hulled paddle steamer with a 60 hp engine. Originally owned by J T Fallon & Partners of Albury it was later sold to  J Whyte & Counsell of Port Adelaide. It might be termed an unlucky boat, sinking three times in its career, the first time on a reef subsequently called Christmas Rocks, near Wilcannia, because it was approaching Christmas and the captain was in a hurry to deliver his goods for the Christmas season. The vessel was also reported burned at Morgan in 1881 but apparently was repaired. The shipping register entry for it was closed in 1909.

Mannum Dry Dock was originally built at Milang on Lake Alexandrina as a floating dock, but apparently there was insufficient water depth for it to operate successfully. W R Randell moved it to Mannum in 1876 where it was installed as a graving dry dock with some alterations. As the only graving dock on the river system the Mannum Dry Dock was in demand and dealt with about 30 paddle steamers a year, providing employment for many. It was purchased by Captain Johan Arnold after Randell's death: he operated the dock until 1925, after which it fell into dis-use. The dock has now been repaired and forms the centrepiece of the Mannum Dock Museum, along with the paddle steamer Marion. Mannum Dry Dock is on the State Heritage Register.

Parsons, Ronald Ships of the inland rivers : an outline history and details of all known paddle ships, barges and other vessels trading on the Murray-Darling system Ridgehaven, S. Aust.: Gould Books, 1990

Kenderdine, Sarah Historic shipping on the River Murray Adelaide: State Heritage Branch, Dept. of Environment and Land Management, 1995

Christopher, Peter Paddlesteamers and riverboats of the River Murray [Stepney, S.Aust.]: Axiom , 2000

Randell Dry Dock and Beam Pumping Engine

Mannum Dry Dock