HMAS Otama was an Oberon-class submarine, formerly of the Royal Australian Navy (RAN). Built in Scotland, the submarine was the last of the class to enter service when commissioned into the RAN in 1978. Otama was a specialist, one of two "Mystery Boats", fitted with additional surveillance and intelligence-gathering equipment. Otama was routinely deployed on classified operations to obtain intelligence on Soviet Pacific Fleet vessels and Chinese Navy vessels, and conducted associated coastal surveillance, throughout Asia.
Otama in Western Port in June 2011
Commemorative plaque at Rockingham Naval Memorial Park for the three sailors killed on board of Australian Oberons
HMAS Otama in the advanced state of dismantling at the Australian Marine Complex in Henderson, Western Australia, in August 2023
The Oberon class was a ship class of 27 British-designed submarines operated by five nations. They were designed as a follow-on from the Porpoise class; physical dimensions were the same but stronger materials were used in hull construction and improved equipment was fitted.
HMS Otus moored at a dock in 2002.
The fin and equipment masts of HMAS Onslow
Barr and Stroud Attack Periscope Type CH74 – RAN Oberon class submarine
Torpedo fire control consoles aboard HMCS Onondaga
