HMAS Yarroma was a channel patrol boat of the Naval Auxiliary Patrol of the Royal Australian Navy (RAN) during the Second World War. During the attack on Sydney Harbour on 31 May 1942, Yarroma fired depth charges at Japanese midget submarine, with the submarine's two crew members destroying their vessel with demolition charges and committing suicide.
HMAS Yarroma in Sydney, February 1944
|Armament:||1 .303 Vickers MG, 4 Depth charges|
Yarroma was awarded the battle honour "Pacific 1942".
- "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" (PDF). Royal Australian Navy. 1 March 2010. Archived from the original (PDF) on 14 June 2011. Retrieved 23 December 2012.