If you find a company that offers 3 week courses on the water paying employees to learn how to sail, please let me know. This board is full of people who would like to be paid to go sailing. No one is going to pay you to LEARN how to sail.
You want adventure and are going to pharmacy school? If you want to get paid to be an adventurer you are going to have to pay your dues and sign on for whatever you can for probably no money - more likely you will have to kick in money to finance the adventure. Build a reputation and maybe someone will actually pay you to have fun.
Dreams are great, but yours is going to require a lot of sacrifice.