Rothesay" Class Type 12M Anti Submarine Frigate "HMS Londonderry"under major conversion to a weapons trials ship with the 4.5" gun turret removed, a helicopter pad fitted, and no less than three radar/electronic masts erected (instead of the one as built). At the Portsmouth Navy Days, August 1980
Llewelyn, Hugh
CC BY-SA 2.0
<a rel="nofollow" class="external free" href="https://www.flickr.com/photos/camperdown/11341425755/in/album-72157638445148613/">https://www.flickr.com/photos/camperdown/11341425755/in/album-72157638445148613/</a>