Yes, I would dedicate one bank or favorite list for all of the Marine frequencies and program them in. I live in Union County and the following frequencies are the ONLY ones I have found to be fairly active from my location: (If anyone wants to add specific notes to this list, please feel free because I realize it is very vague)
156.325 - Port Ops (which port, I have no idea)
156.350 - Commercial
156.450 - Boat Calling Coast Guard (non emergency)
156.500 - Commercial
156.550 - NYC Vessel Traffic
156.600 - Raritan Bay and East River
156.650 - Manasquan Inlet (very active when monitoring from Monmouth county beaches)
156.675 - Port Ops (not sure which specific port)
156.700 - NYC Vessel Traffic
156.800 - Emergency Channel
156.900 - Commercial
156.925 - hear activity on here at times, unknown use
156.950 - Staten Island Ferry (not sure if it is still used for that though, maybe someone can confirm)
157.050, 157.100, 157.150 - US Coast Guard, but very weak from my home location)
I am also still looking for the frequency the NYC ferries use, such as the new Rockaway Beach ferry from Wall St. Pier. I am hoping to bring my scanner along for the ride this summer and close-call them.