Hi firestar12,
I'm not comparing ships, I'm comparing the sounds that you would hear on the deck of a steam driven vessel and the sounds you would hear on ships with a more modern propulsion unit.
OK, they might have a deisel generator for the electrical side of things but I would doubt that for a vessel with the small electrical power needs of a tug. The winches and capstans and so on would be driven by steam.
Regards, Dave