It does seem a bit outdated. I've worked with some proper skinny bints in my time, and I'd be concerned about half of them being able to access liferafts, etc. And the other half would be worried about breaking a nail.....
And no, I am not some overweight bifter with a 'jealousy complex' (before anyone jumps down my throat...) - I am a healthy 9 and a half stone, 5ft 7inch tall biatch.