The halibut was shot, then harpooned before it was brought aboard the boat, disqualifying the catch from being considered for a world record.
OK, so i am trying to picture the logistics of how you get that thing in the boat legally. Clearly they have a door, but even 3 guys with gaffs trying to drag that beast in is 153# each, plus the flailing. I've never seen a door that wide either. The boat probably drives to plane the fish up, right?