There are tons of factors, from classification of the fire to available equipment. If I read correctly they are in the yards so not sea worthy atm. This means some fire fighting capabilities may not be operational or in lay up awaiting repairs and such. Its Sunday so they have a skeleton crew which is the duty section for the day, so the most experienced with damage control may not be on board. It can take anywhere from a few minutes to several hours. There is already likely federal fire on scene to assist from the pier. Let's just hope it isn't some combination that causes a hypergolic mixture in which the fire provides its own fuel and can only be contained until it expends said fuel or through using a kitty litter like substance the Navy doesn't use. That is very rare though.