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12. Use of 156.375 MHz is available for navigational communications only in
the Mississippi River from South Pass Lighted Whistle Buoy “2” and South-
west Pass entrance Mid channel Lighted Whistle Buoy to mile 242.4 above
head of Passes near Baton Rouge, and in addition over the full length of
the Mississippi River-Gulf Outlet Canal from entrance to its junction with
the Inner Harbor Navigation Canal, and over the full length of the Inner
Harbor Navigation Canal from its junction with the Mississippi River to its
entry to Lake Pontchartrain at the New Seabrook vehicular bridge.
13. Within 120 km (75 miles) of the United States/Canada border, in the area
of the Puget Sound and the Strait of Juan de Fuca and its approaches,
157.425 MHz is half of the duplex pair designated as Channel 88. In this
area, Channel 88 is available to ship stations for communications with
public coast stations only. More than 120 km (75 miles) from the United
States/Canada border in the area of the Puget Sound and the Strait of
Juan de Fuca, its approaches, the Great Lakes, and the St. Lawrence
Seaway, 157.425 MHz is available for intership and commercial communi-
cations. Outside Puget Sound area and its approaches and the Great Lakes,
157.425 MHz is also available for communications between commercial
fishing vessels and associated aircraft while engaged in commercial fish-
ing activities.
14. When the frequency 156.850 MHz is authorized, it may be used addition-
ally for search and rescue training exercises conducted by state or local
governments.
15. The frequency 156.850 MHz is additionally available to coast stations on
the Great Lakes for transmission of scheduled Coded Marine Weather
Forecasts (MAFOR), Great Lakes Weather Broadcast (LAWEB) and sched-
uled Notices to Mariners or Bulletins. F3C and J3C emissions are permit-
ted. Coast Stations on the Great Lakes must cease weather broadcasts
which cause interference to stations operating on 156.800 MHz until the
interference problem is resolved.
16. The frequency 157.100 MHz is authorized for search and rescue training
exercises by state or local government in conjunction with U.S. Coast Guard
stations. Prior U.S. Coast Guard approval is required. Use must cease
immediately on U.S. Coast Guard request.
17. The duplex pair for channel 20 (157.000/161.600 MHz) may be used for
ship to coast station communications.
18. Available for assignment to coast stations, the use of which is in accord
with an agreed program, for the broadcast of information to ship stations
concerning the enviro.
