. VHF CHANNELS
Channel Number
Ship Transmit MHz
Ship Receive MHz
Use
01A
Port Operations mercial, VTS. Available only in New Orleans / Lower Mississippi area.
05A
Port Operations or VTS in the Houston, New Orleans and Seattle areas.
06
Intership Safety
07A
Commercial
08
Commercial (Intership only)
09
Boater Calling. Commercial and mercial.
10
Commercial
11
Commercial. VTS in selected areas.
12
Port Operations. VTS in selected areas.
13
Intership Navigation Safety (Bridge-to-bridge). Ships >20m length maintain a listening watch on this channel in US waters.
14
Port Operations. VTS in selected areas.
15
--
Environmental (Receive only). Used by Class C EPIRBs.
16
International Distress, Safety and Calling. Ships required to carry radio, USCG, and most coast stations maintain a listening watch on this channel.
17
State Control
18A
Commercial
19A
Commercial
20
Port Operations (duplex)
20A
Port Operations
21A
. Coast Guard only
22A
Coast Guard Liaison and Maritime Safety Infor
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