I did not intend to indicate that you would fail to listen. I meant that as a general statement, not a personal one, and for not making that distinction clear, I apologize.
Then this begs the question; on what is your judgement based? Do you have a maritime background? Do you have knowledge of the situation, and the capabilities and limitations of the craft you're on? If you do, then by all means, use your judgement. If not, it may be better to listen to the experts.
I am not a sailor, and I don't know the actions of the crew. I am more apt to follow their orders unless such events as they're sailing off as the water rises in my cabin.
As a flip to this:
What if the Captain wants you to stay put to not hinder the crew as they move through the passageway in fire gear with a 4" fire line?
What if the Captain sees that the smoke is much thicker in the hall, and that while they ventilate, you're safer in the cabin- where you can open a window?
What if yelling Fire has the predictable reaction of inciting panic in the other passengers?
What if the crew is counting on using that fire extinguisher to fight a fire?
While evacuating to the main deck may be a reasonable course of action, grabbing the fire extinguisher for any reason other than to put out another person is not. You should not be trying to fight the fire. Your duty is to yourself an others; not the boat. That's the crew's duty. If the crew has abandoned their duties, then you trying to fill in for them will have negligible effect. If they have not; then you will form an obstacle.
I beg to differ; you did state that there is "quite a track record". That is attempting to set a trend. I was responding to what you said, as 'track record' is the same as setting a trend.
That is a good point that can't be stated enough, attempting to retrieve any sort of personal belongings is quite unnecessary. If you can't grab it in the first seconds of getting dressed and leaving your cabin, then it's gone forever.