Unmanned lightvessel <i><b>FS 4</b></i> on static display in Wilhelmshaven
<a href="//commons.wikimedia.org/wiki/User:Ein_Dahmer" title="User:Ein Dahmer">Ein Dahmer</a>, derivative work <a href="//commons.wikimedia.org/wiki/User:L%C3%A4mpel" title="User:Lämpel">Lämpel</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>