I worked deck on a 300' NOAA vessel in the 1980's. When underway, the position was helm and watch. As part of the watch, we had to hourly
"clock in" to about a dozen stations around the boat. One of the stations was right at the bow, three flights of stairs down from the main deck. When the bow was rising in seas like shown in the video, you could not climb back out. But wait for the bow to drop and you could easily go up a flight of stairs in two strides, wait at the landing, then two strides again.
The part that always made me uncomfortable was the station in "shaft alley." Down in the bilge walking the length of the dimly lit spinning shaft from engine to stuffing box. Get me back on the bridge.