JP 3-50 National Search and Rescue Manual Vol I - US Navy

JP 3-50 National Search and Rescue Manual Vol I - US Navy JP 3-50 National Search and Rescue Manual Vol I - US Navy

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1. Transmit distress alerts by at least two separate and independent means. 2. Receive shore-to-ship distress alerts. 3. Transmit/receive ship-to-ship distress alerts. 4. Transmit/receive SAR coordinating communications. 5. Transmit/receive on scene communications. 6. Transmit/receive locating signal. 7. Transmit/receive maritime safety information. 8. Transmit/receive general radiocommunications to/from shore. 9. Transmit/receive bridge-to-bridge communications (bridge-tobridge radio watchkeeping requirements not adopted). C. GMDSS elements: 1. INMARSAT (International Maritime Satellite Organization) satellite terminals. 2. EPIRBs. 3. NAVTEX. 4. INMARSAT safetyNET, also called Enhanced Group Call. Used to provide high seas maritime safety information outside NAVTEX coverage. HF telex allowed as a substitute. 5. HF telex (also called sitor or NBDP). 6. HF radiotelephone. 7. VHF radiotelephone. 8. VHF handheld (for survival craft). 3-5

9. SART. 10. MF DSC, used to initiate ship-to-ship call or ship-to-shore call when within 100 NM of shore. Call can be initiated without anyone listening to radio. 11. HF DSC, same purpose as MF DSC, except provides worldwide coverage D. Alerting signals in GMDSS include the frequencies listed below. Shore facilities providing these future services are scheduled to have 24-hour guards and direct connection to the area RCC. 1. Satellite EPIRB signals, 406.025 MHz, and 1.6 GHz. 2. Satellite Ship Earth Station signals, 1.6 GHz band. 3. Digital Selective Calling, 2, 4, 6, 8, 12, and 17 MHz (FM) band. 4. Navigation, Meteorological, and Urgent information broadcasts shore-to-ship on 518 kHz, using NBDP telegraph equipment (NAVTEX). 320 COMMUNICATION FACILITIES A. Voice Communications provide the most rapid means of transmitting urgent information, and usually are the most practical for directing on scene operations. They may be accomplished by using: 1. Telephone Private Lines (TPL). When established specifically for SAR nets, they may be called SARTELs. ARTCCs have widespread voice circuits for domestic and international traffic control. These can be extremely valuable for SAR, particularly in aircraft incidents. Urgent communications between two RCCs can often be relayed by an ARTCC. 2. Automatic Voice Network (AUTOVON), a worldwide direct-dial system of voice communications for United States military agencies. 3. Federal Telephone System (FTS), a direct-dial system within the United States for use by United States government agencies. 4. Commercial telephone, the most widespread method of domestic and international voice communications. It often provides the most rapid means of transmitting or obtaining information. 5. Radiotelephone, the most common type of radio communications among surface, air, and fixed stations. There are innumerable uses of radiotelephone circuits and a considerable number of networks that can be used in SAR operations. Radiotelephone

1. Transmit distress alerts by at least two separate <strong>and</strong><br />

independent means.<br />

2. Receive shore-to-ship distress alerts.<br />

3. Transmit/receive ship-to-ship distress alerts.<br />

4. Transmit/receive SAR coordinating communications.<br />

5. Transmit/receive on scene communications.<br />

6. Transmit/receive locating signal.<br />

7. Transmit/receive maritime safety information.<br />

8. Transmit/receive general radiocommunications to/from shore.<br />

9. Transmit/receive bridge-to-bridge communications (bridge-tobridge<br />

radio watchkeeping requirements not adopted).<br />

C. GMDSS elements:<br />

1. INMARSAT (International Maritime Satellite Organization)<br />

satellite terminals.<br />

2. EPIRBs.<br />

3. NAVTEX.<br />

4. INMARSAT safetyNET, also called Enhanced Group Call. Used to<br />

provide high seas maritime safety information outside NAVTEX<br />

coverage. HF telex allowed as a substitute.<br />

5. HF telex (also called sitor or NBDP).<br />

6. HF radiotelephone.<br />

7. VHF radiotelephone.<br />

8. VHF h<strong>and</strong>held (for survival craft).<br />

3-5

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