| Name |
Frequency |
Additional |
| Marine 01A |
156.05000 |
Port Operations and Commercial, VTS. Available only in New Orleans / Lower Mississippi area. |
| Marine 05A |
156.25000 |
Port Operations or VTS in the Houston, New Orleans and Seattle areas. |
| Marine 6 |
156.30000 |
Intership Safety |
| Marine 07A |
156.35000 |
Commercial |
| Marine 8 |
156.40000 |
Commercial (Intership only) |
| Marine 9 |
156.45000 |
Boater Calling. Commercial and Non-Commercial. |
| Marine 10 |
156.50000 |
Commercial |
| Marine 11 |
156.55000 |
Commercial. VTS in selected areas. |
| Marine 12 |
156.60000 |
Port Operations. VTS in selected areas. |
| Marine 13 |
156.65000 |
Intership Navigation Safety (Bridge-to-bridge). Ships >20m length maintain a listening watch on this channel in US waters. |
| Marine 14 |
156.70000 |
Port Operations. VTS in selected areas. |
| Marine 15 |
156.75000 |
Environmental (Receive only). Used by Class C EPIRBs. |
| Marine 16 |
156.80000 |
International Distress, Safety and Calling. Ships required to carry radio, USCG, and most coast stations maintain a listening watch on this channel. |
| Marine 17 |
156.85000 |
State & local govt maritime control |
| Marine 18A |
156.90000 |
Commercial |
| Marine 19A |
156.95000 |
Commercial |
| Marine 20 |
161.60000 |
Port Operations (duplex) |
| Marine 20A |
157.00000 |
Port Operations |
| Marine 21A |
157.05000 |
U.S. Coast Guard only |
| Marine 22A |
157.10000 |
Coast Guard Liaison and Maritime Safety Information Broadcasts. Broadcasts announced on channel 16. |
| Marine 23A |
157.15000 |
U.S. Coast Guard only |