Suggestion: Motorboat that burns tar/shallowbreath

[MerrittK]

Airboats (shallow keeled boats with fans on the top) are used IRL to navigate shallow swamps, and they work by using a massive fan on the back to push off of the air. Something like that as a maneuverable alternative to the rowboat would fit nicely in the dimension. https://en.wikipedia.org/wiki/Airboat