Imperial Russian 47 mm Hotchkiss naval gun in Lennusadam maritime museum. This particular gun was salvaged in 2002 from the wreck of Russian minesweeper no. 4 (former <i>Dago</i>), torpedoed during the First World War.
<a href="//commons.wikimedia.org/wiki/User:MKFI" title="User:MKFI">MKFI</a>
<span class="int-own-work" lang="en">Own work</span>