An application to test innovative fishing gear throughout New England could get some Maine lobstermen back into a nearly 1,000-mile swathe of offshore fishing grounds for the first time since the implementation of a seasonal closure last year. The Northeast Fisheries Science Center, a research arm of the National Oceanic and Atmospheric Administration, is seeking a permit to work with fishermen to trial “ropeless” fishing gear in several parts of New England, including the 967-square mile closure area off the midcoast. The lucrative fishing grounds were closed off last year for the first time as part of a slew of new regulations designed to protect the endangered right whale.