Additionally, frequencies 123.1 MHz, 3023 kHz and 5680 kHz can be used by land stations engaged in coordinated search and rescue operations.ħ The international NAVTEX frequency 518 kHz is the primary frequency for receiving maritime safety information. 10Ģ182 kHz, 4125 kHz, 6215 kHz, 8291 kHz, 12290 kHz, 16420 kHz, and 156.8 MHz.Ģ174.5 kHz, 4177.5 kHz, 6268 kHz, 8376.5 kHz, 12520 kHz, and 16695 kHz.Ģ187.5 kHz, 4207.5 kHz, 6312 kHz, 8414.5 kHz, 12577 kHz, 16804.5 kHz, and 156.525 MHz.ġ56.8 MHz and one other 156–174 MHz frequencyġ Frequency 156.525 MHz can be used for ship-to-ship alerting and, if within sea area A1, for ship-to-shore alerting.Ģ For ships equipped with MF/HF equipment, there is a watch requirement on 2187.5 kHz, 8414.5 kHz, and one other frequency.ģ Frequency 2187.5 kHz can be used for ship-to-ship alerting and, if within sea area A2, for ship-to-shore alerting.Ĥ Frequency 156.8 MHz may also be used by aircraft for safety purposes only.ĥ Frequency 121.5 MHz may be used by ships for aeronautical distress and urgency purposes.Ħ The priority of use for ship-aircraft communications is 4125 kHz, then 3023 kHz. General distress and safety communications and calling:ġ530–1544 MHz (space-to-Earth) and 1626.5–1645.5 MHz (Earth-to-space). Transmission of maritime safety information. Search and rescue coordinating communications. Receipt and acknowledgement of distress alerts by ship stations and ship earth stations. Receipt and acknowledgement of distress alerts by coast stations and coast earth stations. Procedure for receipt and acknowledgement of distress alerts. Transmission of a distress alert by a station not itself in distress. Operating Procedures for Distress and Safety Communicationsĭistress, urgency, and safety communications. Ship radio equipment-Sea areas A1, A2, A3, and A4. Ship radio equipment-Sea areas A1, A2, and A3. Ship radio equipment-Sea areas A1 and A2. Radio maintenance personnel for at-sea maintenance.

Radio operator requirements for ship stations. Global Maritime Distress and Safety System (GMDSS)

Maritime Calling instal the new