These broadcasts were recently mentioned on the UDXF newsgroup. Here is the latest schedule that I have of these broadcasts by the US Coast Giard on 2670 kHz USB.
NOQ Mobile AL Marine Information Broadcast-1020/1220/1620/2220
NMC CAMSPAC Point Reyes CA Marine Information Broadcast-0203/1403
NMQ9 Long Beach CA Marine Information Broadcast-0503/1303/2103
NMQ27 Los Angeles CA Marine Information Broadcast-0503/1303/2103
NMA10 Mayport FL Marine Information Broadcast-0620/1820
NCF Miami FL Marine Information Broadcast-0350/1550
NMA21 St. Petersburg FL Marine Information Broadcast-0320/1420
NRV COMSTA Apra Harbor GUM Marine Information Broadcast-0705/2205
NMO COMSTA Honolulu HI Marine Information Broadcast-0545/1145/1745/2345
NMG COMSTA New Orleans LA Marine Information Broadcast-0550/1035/1235/1635/2235
NMF COMSTA Boston (Cape Cod) MA Marine Information Broadcast-1035/2235
NMF2 Woods Hole MA Marine Information Broadcast-0440/1640
NMN70 Eastern Shore MD Marine Information Broadcast-0233/1403
NMW44 Portland ME Marine Information Broadcast-1105/2305
NMF44 Southwest Harbor ME Marine Information Broadcast-1135/2335
NMN13 Cape Hatteras NC Marine Information Broadcast-0133/1303
NMN37 Fort Macon NC Marine Information Broadcast-0103/1233
NMK3 Atlantic City NJ Marine Information Broadcast-1103/2203
NMY42 Moriches NY Marine Information Broadcast-0010/1210
NMW Astoria OR Marine Information Broadcast-0533/1733
? Humboldt Bay CGAS (Arcata) OR Marine Information Broadcast-0303/1503
NOE North Bend OR Marine Information Broadcast-0603/1803
NMR COMSTA San Juan PR Marine Information Broadcast-0305/1505
NMB Charleston SC Marine Information Broadcast-0420/1620
NOY26 Corpus Christi TX Marine Information Broadcast-1040/1240/1640/2240
NOY Galveston TX Marine Information Broadcast-1050/1250/1650/2250
NMN80 Hampton Roads VA Marine Information Broadcast-0203/1333
NOW Port Angeles WA Marine Information Broadcast-0615/1825
