A view of the engine room of <a href="https://en.wikipedia.org/wiki/HMAS_Onslow" class="extiw" title="en:HMAS Onslow">HMAS <i>Onslow</i></a>, a <a href="https://en.wikipedia.org/wiki/Oberon-class_submarine" class="extiw" title="en:Oberon-class submarine"><i>Oberon</i>-class submarine</a> of the <a href="https://en.wikipedia.org/wiki/Royal_Australian_Navy" class="extiw" title="en:Royal Australian Navy">Royal Australian Navy</a> that was in commission between 1969 and 1999 and is now on exhibition at the <a href="https://en.wikipedia.org/wiki/Australian_National_Maritime_Museum" class="extiw" title="en:Australian National Maritime Museum">Martime Museum, Sydney</a>.
<a href="//commons.wikimedia.org/wiki/User:Martinvl" title="User:Martinvl">Martinvl</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>