Super Trawlers In galway bay

Noticed on marinetraffichttps://www.marinetraffic.com/en/ais/home/centerx:-9.6/centery:53.2/zoom:11 that there is three super trawlers going back and forth slowly behind the aran islands does anybody know if their fishing and if they are what are they fishing for?

Probably sheltering,awaiting crew change out Galway.

Blue whiting, megrim - whatever they can grind up for cages - dolphins, whales - anything they can high grade at good market prices