"Porpoise" Class submarine "HMS Sealion", 2,080 tons, launched 1959, completed 1961. At the Portsmouth Navy Day, 08/80. Scanned photograph taken with a Canon AE-1 Program.
<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/11389754416/">HMS Sealion</a>