When fighting a shipboard fire, as all of the old Navy men and women here will tell you, as soon as you spray fog on the fire, especially a Class A fire, you knock it's dick square in the dirt. I would walk through a blazing inferno with a high velocity fog nozzle with a 4' applicator over my shoulder. Without the applicator (T-boats aren't required to carry one), 2 nozzlemen side by side will protect each other in as little as shorts and a t-shirt. Turnouts also aren't required on a T-boat. The beauty of fog is that it pulls in fresh air from behind, so you have something to breath, as SCBA's aren't required on a T-boat.
I wont say that they could have saved any passengers, as Tom said, by the time the fire was discovered, the PAX were likely all deceased.
Including 2 of my friends, one being a Spree crewmember.