A person is often judged by their appearance when looking for work on a yacht and weight will go against you if you have it and it is obvious. The industry does look for healthy, not over weight people, that is the industry like it or hate it. I have to say though, there are alot of crew though walking the docks this year with way too many round corners sticking out, the young generation really need to take a serious look at themselves, especially looking for work on a yacht. If you are chubby, people think you are lazy, don´t exercise, are unhealthy and are not able to work hard without breaking a sweat and won´t be upto the task. This industry is still about image and who could blame it, you pay for the best, then why not hire the best looking, fit, health conscious persons and someone that takes a pride in themselves and cares about what they look like. If you are chubby, fat, call it what you like, and are in control of your weight, don´t expect a yacht to hire you when there are slim people out there.
I work on a yacht where unfortunately, I have to ask the agencies for the most attractive girls when I am hiring - It is purely down to the owner who likes to showcase us as well as his yacht - that being said, I will always hire the friendliest and most enthusiastic of the girls I speak to when hiring junior crew...
It is difficult when I want one girl but te owner wants another based on the pictures but what I have found is that the people who WANT to be in the industry will last, if he makes me hire a pretty girl who cant hack it, they are gone and I am looking again!
It does have a factor, but I wouldn't worry too much, the first job is the hardest to get but the more experience you have, the easier it is to get another job and another...