[1010RD]

Those fire boats are interesting. What is the story on their design/shape? Are they pumping sea water to put the fire out?

[thackney]

I suspect (without knowing) that those are work boats that normally run equipment and supplies. It would make sense to equipment them a fire water cannon. They would be the first available and likely even already on site when a fire starts.

As far as I know, all ships use sea water to put out fires. I believe this is very common with the Navy. I know true fire boats used in harbors pump from the water they are in.