You won't find NJ specific, as posted the WIKI has a list of the US Marine channels [they are common - east coast, west coast, Gulf, etc]
However you might want to put in the International channels, as many of the ships do/will use them, even tho they are [on paper] prohibited in the US of A.
Also check the Wiki for the CG LMR [ you will need a P25 Scanner] and enter all of them as they can/will pop-up on any of them, from time-time.
Remember, it's winter so it's quiet time and unless you are near an active Port with Tankers/Cargo the traffic will be minimal.
where in radioreference database do i find a full list of nj marine frequinces and coast gaurd frequinces for air and sea and base station