Squid jigging fishery is one of the key fisheries in Nagasaki Prefecture. This fishery consumes large amount of fuel for the lighting in the nighttime and its high cost has impacted on the financial situation. To improve this condition through the reduction of fuel cost, Nagasaki Prefectural government proposed to reduce the upper limit of lighting power in the voluntary regulation of the Nagasaki squid fishermenʼs council from 160 kW to 120 kW in 2014. Some fishermen however objected to this proposal, so that following plans are under consideration now. 1. To request the relevant organizations to set the 120 kW maximum lighting power in their voluntary regulations, which have an effect all over Japan. 2. To set the voluntary rule in Nagasaki that promotes energy efficient fishing practices such as slow speed navigation to/from fishing ground and fishing with the stage reduced lighting procedure.