I have skippered boats in the Caribbean, Belize, Croatia, Italy, and various places in the US. My credential include a USCG 50 Ton Masters License, as well as ASA Instructor credential up to and including Advanced Coastal Cruising.
I do charters in NY Harbor - it is a body of water of which I am very familiar. In addition, I am a survivor of the World Trade Center attacks of September 11, 2001. Obviously speaking about 9/11 is not appropriate for tours where people are celebrating or just relaxing, but can add a lot to tours where there is a real interest in the history of downtown Manhattan.