Raymarine Ray230 Owner's Handbook Manual page 115

5-6
U.S. Coast Guard
Channel: 22A
Vessels: Any
Use: Working channel for
exchange of
communications with
stations of the U.S. Coast
Guard.
Between: Ship to U.S. Coast Guard
ship, coast to aircraft
stations
Comments: U.S. Coast Guard does not
regularly monitor this
channel. Establish contact
on channel 16 and shift to
channel 22A as directed.
Navigation
Channel: 13
Vessels: Any
Use: Safety Communications
pertaining to the
maneuvering of vessels or
the directing of vessel
movements
Ship-to ship and secondarily ship-to-
coast
This is commonly called the Bridge-to-
Bridge channel. Large vessels and
towboats depend on this channel for
their safe navigation. Railway or
highway bridges which open for ship
navigation often operate on this
channel.
Bridge-to-Bridge stations must reduce
power to one watt for routine
operations.
Appendix