"Hecla" Class (or "Improved Heda" Class" Hydrographic Research Ship "HMS Herald" 2,000 tons, launched in 1973 and completed in1974. She served both in the Falklands War and Gulf War. At the Portsmouth Navy Day, 08/80. Scanned slide.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/58433307@N08">Hugh Llewelyn</a> from Keynsham, UK
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/camperdown/41932081080/">HMS Herald</a>