A small container vessel was secured in port. A couple of visitors had boarded and, in the early morning hours, they were now on their way off the vessel. The gangway had been raised a few meters above the dock surface, so the gangway watchman needed to lower it back down to the dockside to permit their exit.
As this was being done, the two visitors attempted to disembark by stepping over the bulwark, which was almost at the same height as the quay.
Image Credits: nautinst.org
One of the persons...
https://www.marineinsight.com/case-studies/real-life-incident-ignoring-the-gangway-proves-fatal/