MAINE — As gas and diesel prices climb during the war in Iran, some of Maine’s most recognizable industries are feeling the strain. From the coast to the woods, people who rely on fuel to do their jobs say the higher costs are changing how they work and raising concerns about what comes next. Lobstermen are rethinking trips on the water, while logging contractors say the math is getting harder for truckers and mills across the state. …“I mean, there is no equipment that does not use diesel as its primary fuel for both harvesting and trucking,” Dana Doran, executive director of the Professional Logging Contractors of the Northeast, said. Doran said spiking diesel prices are adding roughly 20% to the cost of each trip a driver makes to and from a mill. That increase, he said, creates uncertainty for contractors and for mills that depend on a steady supply of wood.