If the man that built it had to work on it, you can bet things would be different.
I was doing a pre-departure inspection of an ocean hopper barge several years ago. The barge was in a local shipyard getting some top side work done before it left on an international voyage. The bow rake compartment hatch was open and I climbed down the ladder and started my inspection. I left my hard hat and work vest (life jacket) on the deck next to the hatch to mark where I was. I was doing my thing and about at amidships of the compartment when I noticed the sun light from the deck hatch went dark. Not good. I hurried back to ladder climbed up 18' and pushed on the hatch cover, no movement, the hatch cover was dogged from the out side and I was inside. A welding machine was running on deck so nobody could hear me shout. But as long as that welding machine was running somebody was on deck. I dropped back down the ladder and found a piece of angle frame drop lying in the bilge, you gotta love shipyard workers! I waiting until I heard the welding machine shut down and climbed back up the ladder and beat the hatch cover with the angle drop for all I was worth. A few minutes later the hatch cover opened and the welder's eyes were the size of saucers. He thought he was seeing a ghost, he had no idea anybody was still aboard. I never found the guy who closed the hatch, disregarding my gear at the hatch. My life jacket and hard hat were still on deck when I got out.