Been on little holidays in Weymouth, Dorset. It has a big bay sheltered from the rough sea. 5 Big Ships parked in there, each empty of passengers but fully lit-up each night, running off power from their engines, i guess is cheaper for them than using shore-power. Same for a lot of southern shores of UK https://www.marinetraffic.com/en/ais/home/centerx:-2.4/cente...