<a href="https://en.wikipedia.org/wiki/BL_6_inch_Mk_XXIII_naval_gun" class="extiw" title="en:BL 6 inch Mk XXIII naval gun">BL 6 inch Mk XXIII naval gun</a> on the <a href="https://en.wikipedia.org/wiki/HMS_Belfast_(C35)" class="extiw" title="en:HMS Belfast (C35)">HMS <i>Belfast</i> (C35)</a>
<a href="//commons.wikimedia.org/wiki/User:Gonzolito" title="User:Gonzolito">Gonzolito</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>