Bow 23 mm anti-aircraft gun of Polish minehunter <i>Flaming</i> (621) photographed during the Northern Coasts 2014 exercise public pre sail event in Aura river in Turku.
<a href="//commons.wikimedia.org/wiki/User:MKFI" title="User:MKFI">MKFI</a>
<span class="int-own-work" lang="en">Own work</span>