Every Boat captain must have a USCG License onboard the vessel.
Don't be afraid to ask to see it.
Escambia County want's their
money too
.
There must be a business
license to operate as well!
Always be able to look up
your instructor by their
number.
Make sure your dive boat is covered by commercial insurance.  
If it's not commercial you're not covered under the policy.
Did you know that every
captain and crew member of a
charter must be enrolled in a
random drug testing program?