• Inmarsat A, B, C or M

(communications system)

• GMDSS

(communications system—VHF-DSC, etc.)

• VHF Radio Network

(communications system—VHF-DSC, etc.)

• cellular telephone network

(communications system—VHF-DSC, etc.)

• transponder system network

(communications/navigation system)

• vessel traffic services

(information and management system)

• GPS/DGPS

(differential global positioning system—navigation)

• ECDIS

(electronic chart display and information system)

• PORTS

(physical oceanographic real-time systems)

Information Exchanged

  • arrival at pilot station
  • real-time vessel position (aids to navigation and electronic charts)
  • real-time channel water depth and density information (PORTS)
  • real-time channel current information (PORTS)
  • real-time port weather and visibility information (PORTS, NAVTEX, VTS, and VHF)
  • real-time navigational information/vessels in system (ECDIS, VTS, and transponder)
  • real-time VTS system waterways management (VTS)
  • vessel emergency information (via transponder/hazardous commodities list, etc.)
  • route prediction and time of arrival at berth (ECDIS, VTS, and transponder)

4. Vessel at Berth

Situation: Ship at berth, preparing for departure. Systems used and information exchanged are shown below.

Operations Navigation Information and Supporting Systems

• GMDSS

(communications system)

• VHF radio network

(communications system)

• cellular telephone network

(communications system)

• transponder system network

(communications/navigation system)

• PORTS

(physical oceanographic real-time system)

• vessel traffic services

(navigation information and management system)

Information Exchanged

  • navigational warnings (Navtex, VHF radio, and VTS)
  • weather warnings and predictions (Navtex, VHF radio, and VTS)
  • real-time water height and density with 24 hour predictions (PORTS)
  • real-time current conditions with 24-hour predictions (PORTS)
  • real-time weather conditions with 24-hour predictions (PORTS)
  • waterways traffic status (VTS)
  • real-time emergency response status (transponder messages/real-time cargo ops)

5. Vessel Departure and Port Transit to Sea

Situation: Ship in harbor and harbor approaches, transiting from assigned berth to departure to sea. Systems used and information exchanged are shown below.

Harbor Navigation Information and Supporting Systems

• U.S. Coast Guard aids to navigation

(navigation system)

• Inmarsat A, B, C or M

(communications system)

• GMDSS

(communications system -VHF-DSC, etc.)

• VHF Radio network

(communications system)

• cellphone network

(communications system)

• transponder system network

(communications/navigation system)

• vessel traffic services

(navigation information and management system)



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