The <a href="https://en.wikipedia.org/wiki/Lightvessel" class="extiw" title="w:Lightvessel">lightship</a> <a href="https://en.wikipedia.org/wiki/German_lightship_Adlergrund" class="extiw" title="w:German lightship Adlergrund"><i>Adlergrund</i></a>
<p>The lightship <i>Adlergrund</i> in the port of Swinemünde (Świnoujście).
</p>
lightship <i>Adler Grund</i>. Image from page 517 of journal Die Gartenlaube, 1887.
Unknown, illustration based on a photograph by Th. Politzky of Swinemünde.
1877
<cite class="book" style="font-style:normal">(in german) (1887) <i> Die Gartenlaube</i>, <a href="https://en.wikipedia.org/wiki/en:Leipzig" class="extiw" title="w:en:Leipzig"><span title="largest city in Saxony, Germany">Leipzig</span></a>:  Ernst Keil's Nachfolger  <small></small></cite>