In the past, when Howard Farley Sr. would go fishing for king crab, he’d point the bow of his vessel towards the rough and icy waters of the Norton Sound. State mandates require that he and other Nome, Alaska, crabbers travel at least 15 miles from their town’s shore to drop their pots, but as the number of successful crustacean catches dwindled in recent years, they’d often go farther and farther afield. Farley could track his distance from home from GPS, but after a long day at sea, it didn’t…