I'm not a captain of a vessel that carries other people, so you are right, I have no idea. There was no firefighting gear on the second boat? What about a bucket brigade? From the outside the crew had the best knowledge of the exit route. The report describes a captain and crew escaping the boat as rapidly as possible -- I'm sorry that does not make sense to me.
The large volume of noxious fumes would of made this fire extremely difficult if not impossible to fight without BA.
In all honesty I think there was next to nothing the crew could do. The blaze sounds to be well established before it was found. The fire fighting equipment on the "Great escape" would of not been sufficient to fight a fire of this magnitude.
A bucket would of been like pissing on a wildfire.