Maglite...passing by

Busy day at tugboat Holland, inspecting tanks, cleaning, and so on. Here Gerrit is passing by, crawling through the starboard ballast tank to inspect the repairs at the bulkhead between lube oil tank and ballasttank.
We will have to wait for a smaller man... because he got stuck and could not move further....
And here you can see the ship has a rivetted hull.