To find your local MSO (Marine Saftey Officer) go to http://www.uscg.mil/top/units/
To find the regulations look at the Code of Federal Regulations - CFR's -- #46 and #33 at
http://www.access.gpo.gov/. Our boats are a called a "T" boat.
Join the Passenger Vessel Association -- www.passengervessel.com is a good orginzation that lobbies for the passenger vessel industry.
Your local state Department of Natural Resources might have a say in what you are doing. So check uo with your local Authorites.