Yellow 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 href="//commons.wikimedia.org/wiki/File:Abm-orange-icon.png" title="File:Abm-orange-icon.png">File:abm-orange-icon.png</a> (originally <a href="//commons.wikimedia.org/wiki/File:Abm-yellow-icon-2.png" title="File:Abm-yellow-icon-2.png">File:abm-yellow-icon-2.png</a> by <a href="//commons.wikimedia.org/w/index.php?title=User:PutItOnAMap&amp;action=edit&amp;redlink=1" class="new" title="User:PutItOnAMap (page does not exist)">PutItOnAMap</a>))