|Builder:||J. Williams & Sons, Bayview|
|Fate:||Burnt to the waterline in 1944|
HMAS Marlean (Q20) was a channel patrol boat operated by the Naval Auxiliary Patrol of the Royal Australian Navy (RAN) during World War II. She was a private vessel built by J. Williams & Sons in 1938. She was requisitioned and later commissioned by the RAN as a channel patrol boat. Marlean earned one battle honours for her wartime service, "Darwin 1942".
Marlean was burnt down to the waterline while in Sydney Harbour on 12 November 1944.
- "Navy Marks 109th Birthday With Historic Changes To Battle Honours". Royal Australian Navy. 1 March 2010. Archived from the original on 13 June 2011. Retrieved 23 December 2012.
- "Royal Australian Navy Ship/Unit Battle Honours". Royal Australian Navy. 1 March 2010. Archived from the original on 14 June 2011. Retrieved 23 December 2012.
- Wilson, Michael; Royal Australian Navy 21st Century Warships, Naval auxiliaries 1911 to 1999 including Defence Maritime Services, Profile No. 4 - Revised Edition, Topmill Pty Ltd, Marrickville. ISBN 978-1-876270-72-8
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