You can also get a Jones Act Waiver if the boat is more than 3 years old. Depending on your budget
, Protector makes a great 28' Inflatable, and there are also some other quality RIBs out there. The Safety requirements are basically the standard CG Safety requirements for whatever size boat you get. You can find them in any good reference like a Chapmans. They will also cover them when you take your Captains Course. Although you don't HAVE to take a course to get your Captains License (you just have to pass a four part test) I highly recommend it. There are any number of Nautial Schools out there that will either provide a classroom setting, or an online course to help you through the Captains Licensing process. As far as the Boat goes, if you plan on getting USCG Documentation
for it, there is a section in the paperwork for "Endorsements" and "Primary Use". The endorsement will be "Coastwise" and the Primary Use will be "Passenger (under 6 people)". Each State also has their own Registration
requirement to identify Charter boats vs recreational boats. Hope that helps. Good Luck!