DATELINE 1 APRIL, 2023: At our last transport energy course the closing discussion took an interesting turn when a delegate raised the question of energy conservation in fishing fleets. After the course I dived in and did a bit of research on the net. I was soon hooked. One company, Dover Solar, proposes electric trawlers towing PV arrays. Another outfit, Energy Fish-in-Sea, has floated the idea of towing sonic emitters to drive the fish forwards. They have yet to demonstrate it at scale and I wonder whether there would be a catch; it could flounder. Could the UK make its fishing fleet net zero? I’ll leave you to mullet over.