It’s true they were not very big, 177 feet (54 meters). It looks even smaller from the deck of that ship.
Here’s a photo of her alongside in Dutch.
The containers weren’t going anywhere, they were welded to the deck.
Here’s the cook and deckhand on deck.
Being at sea was the good part of the job. Loading the ship meant every box had to moved by hand. We’d usually get a couple guys from shoreside but it was mostly done by the crew.