A pulse and a body temperature above ambient are the essentials. If you are talking about chartering, to be serious, documented experience handling a similar sized boat is what they look for on a resume..if they are consciencious. We had a boat with TMM for 9 years and the hull would have taken nearly the same picture on the day we sold it as when came into their fleet. I am aware that some here objected to the individual chart and boat briefings they give. Having been around those docks a lot over the years, I saw the staff being friendly while taking charterers out for a brief checkout sail and back to Marina.

They can usually spot someone who is fudging their ability during briefings, but they go out with you briefly as well. If not up to it, they will find you a skipper to help you get off to a good start.
Everyone sould be a little concerned in new waters on a boat that is new to them. At TMM and many others they know that and want to make you as comfortable as possible, while still protecting the owners who rely on their judgement.

So give them your resume, accurately. If feel better to take any pressure off..sign up for a skipper the first day. It's a vacation..should be fun all the way. They want to rent you a boat, they want it brought back as it left.