["The Loss of the Koombana", The Sunday Times (Perth, WA), Sunday 07 April 1912, page 10]

...

It has just been decided by the Adelaide Steamship Company that the s.s. Allinga will take up the running of the Koombana, in order to maintain the contract mail service between Fremantle and the Nor'-West ports. The Allinga will leave the East shortly for Western Australia, her date of departure from Fremantle for all ports to Derby having been fixed for Tuesday, May 7. This vessel used to be a regular visitor to this State a few years back.