In the US a great route (and a huge investment of time/funding) is to do a four year maritime academy. It is a major commitment, but every graduate I personally know has done wonderful stuff since. Examples include a straight from high school to academy guy that's about 6 years out of school and Chief Engineer on a large cargo vessel (big $$ and 6 months off a year), another that was a professional chef (did a chef gig on a charter vessel) that changed careers and now works mid-size craft in Engineering slots, and a past employee who went from school to a USCG stint then 20 years in telecom after which I hired on "retirement" to work on high speed navy craft navigation systems... I could go on. I trained as a commercial aircraft pilot, picked up my Airframe and Powerplant tickets as a resume enhancer, but quickly realized I preferred the engineering world to all the other stuff. 35 years later I have my own company (of 30 years), and projects that make every day fun and challenging in a good way.
You may or may not end up in the "yacht" world, but frankly... once the shine of the rich and famous wears off, the reality is that what one does day-to-day is what matters. And engineering can be a rewarding blast (and will drive you nuts occasionally, just to keep things interesting...
Bottom line, if you're young and can find a way to get a solid all around technical education... the world will be your oyster. You may not end up where you thought you were headed, but you'll be in demand and able to find work that pays you back in more ways than $$... the rewards and variety of the jobs are something most folk never get a chance at.