First, not clear on what you mean by "staff" a charter
vessel. On smaller boats, more or less under 50' there us usually only one hired hand on a bareboat charter
and that's the captain
. Crewed charters in that size range are usually husband/wife teams. Boats that aren't owned by a couple will still have a captain
and will be looking for someone with gourmet cooking
skills, ability to do a mirror finish varnish
job and be able to stand watch, handle sails
, do maid service
The big fancy yachts with a larger crew will also be looking for someone with skills except for the basic maid/janitor jobs. If you are an ace diesel mechanic
and know AC and DC electric
and can do it up to ABYC code or similar then you can look for an engineering position on a big boat.
and certifications and taking courses can't hurt, but what will get you the job is knowledge and experience, how you present yourself and what you can contribute. Without that then all the classes
in the world will get you nowhere.
At the same time, I know plenty of guys working in the charter trade
in a number of jobs that have never taken a class, have no certifications, etc. Just experience and know how. Note that this is fine as long as you aren't taking passengers for hire which does require a captain's license
Bottom line, you need to pick up some experience and develop some skills to have a good chance at getting a job on a boat. Start at the bottom at one of the charter companies. You'll be changing oil
toilets, hauling parts
around. Do this for a while, show up on time and sober and you can work your way into delivery
crew and start moving up. Or you can just look for boats looking for extra crew to help on deliveries and start building sea time.