Grey anchor icon
<a href="//commons.wikimedia.org/wiki/User:Egg" title="User:Egg">egg</a> for extracting this symbol out from coat of arms, <a href="//commons.wikimedia.org/wiki/User:SMB99thx" class="mw-redirect" title="User:SMB99thx">User:SMB99thx</a> recoloring.
Original image was from <a href="//commons.wikimedia.org/wiki/File:Norrt%C3%A4ljes_vapen.svg" title="File:Norrtäljes vapen.svg">Image:Norrtäljes vapen.svg</a>, using <a href="//commons.wikimedia.org/wiki/File:Anchor_pictogram_blue.svg" title="File:Anchor pictogram blue.svg">File:Anchor pictogram blue.svg</a> for recoloring it. (color source: <a rel="nofollow" class="external autonumber" href="https://github.com/mozilla/fxemoji">[1]</a>)