The Oseberg A <a href="https://en.wikipedia.org/wiki/Condeep" class="extiw" title="en:Condeep">Condeep</a> platform in the North Sea.
<a href="//www.flickr.com/people/36574363@N00" class="extiw" title="flickruser:36574363@N00">Richard Child</a>
CC BY 2.0
<a href="//commons.wikimedia.org/wiki/Flickr" class="mw-redirect" title="Flickr">Flickr</a>: <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/36574363@N00/367932289">Rig IV</a>