[Barker, Malcolm, The search for s.s. Koombana: seminar hosted by Maritime Archeological Association of Western Australia, Fremantle, 1983. Transcript: State Library of Western Australia, OH1241, Steamship handling discussed by former masters]

The inability to make progress into the wind had more to do with the prop being in and out of the water

Captain Dedman said:

"One of the problems is...when those propellors come out of the water it shakes the ship...like a thousand demons. When she hits the water again there is no power for quite few seconds. The governors go off and the power goes on."