The following summary of the information exchange between ship and shore upon the arrival in or departure from a U.S. port indicates the scope of information required and the means by which data are currently obtained by ships in transoceanic transit.
Situation: Ship at sea, open ocean, 24 hours prior to arrival at a major U.S. port. Systems used and information exchanged are shown below.
Ocean Navigation Information and Supporting Systems
Information Exchanged
Situation: Ship in harbor approaches and harbor, transiting to its assigned berth. Systems used and information exchanged are shown below.
Harbor Navigation Information and Supporting Systems
|
• U.S. Coast Guard aids to navigation |
(buoys, fixed aids, racons and ranges) |
|
• 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
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
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) |
|
• GPS/GPS |
(differential global positioning system, navigation) |
|
• ECDIS |
(electronic chart display and information system) |
|
• PORTS |
(physical oceanographic real-time systems) |
Information Exchanged