They're not fishing boats are they ? Called 'fishing efforts' which I'm thinking is data being collected from those areas. Manyboats are in French waters, Geurnsey waters, Irish waters. Put the night light vessel detectors on, you'll see where the fishing boats are .
Here's the marine traffic. :
Don't know why this won't paste.. if it doesn;t do it this time.. search Marine Traffic.
Last edited by granny; 31st Jan 2021 1:50am.