The area covered by the OpenSeaMap chart bundle 'Gulf of Biscay' as of may 2016.
<a href="//commons.wikimedia.org/w/index.php?title=User:Alexej-osm&amp;action=edit&amp;redlink=1" class="new" title="User:Alexej-osm (page does not exist)">Alexej-osm</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>