A gazillion years ago when I fished from Chatham we had to cross the bar from Pleasant Bay into the Atlantic. It was (and still is) hairy, especially if it was foggy – and it was always foggy – and a sea was running. The channel shifted daily, sand, tons, being moved, and the course would wind among the breakers, left, then right. The boats fishing from Chatham are small, 40-50 feet, yet those seas could be large. When I was fishing we’d cross the bar. Just beyond was the broken and sunken half of the ship Pendlelton, which in the early 50s had come ashore and broken in half. There was a movie made about it, Finest Hours, recently, which I thought was pretty accurate except the absolute hairiest part of that saga, crossing the bar back into Pleasant Bay with all those men aboard and the storm raging, was sort of skipped. But those of us who fished from Chatham, we understood how hairy that had been. There are lots of other bars and hairy entrances around the world fishermen must pass, and even ships (the Columbia Bar off Oregon and Washington for example). This grainy You Tube video here shows the Grindavik, Iceland, harbor entrance in January 1991 in a nasty sea and is in my opinion the most dramatic bar crossing on video ever made. My guess is the boat in the video is 110-130 feet long. Just imagine….