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This page contains the Key to Codes used for each VTS where that information hase been provided by the relevant authority. |
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1. Service Availability
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X = 24 hours
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Y – Other, for example
Code Number
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Explanation
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1
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24 hours except holidays
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2
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24 hours weekdays only
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3
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All others (between the hours specified)
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| An entry of Y3(0900-1700) indicates a service that is provided only between 0900 and 1700 daily. |
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2. Traffic Image Generation
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Indicated by “T” and code number from table
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Code Number
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Explanation
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1
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Automatic Identification System (AIS)
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2
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Real-time Tracking
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3
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Radar
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4
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Closed Circuit Television (CCTV)
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5
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Visual
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6
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Radio Direction Finder (RDF)
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7
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VHF Radio Position Reporting (no other sensors)
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8
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Satellite Position Reporting
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9
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Satellite Surveillance
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| An entry of T136 indicating that the service provided incorporates the following: AIS; RADAR, and RDF. |
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3. VTS type of Service
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Information Service
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Indicated by INS
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Navigation Assistance Service
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Indicated by NAS
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Traffic Organisation Service
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Indicated by TOS
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4. Availability to Allied Services
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A service that includes information exchange with other VTS or allied services.
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Indicated by AS
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“VTS/Y3(0900-1700)/T136/INS+TOS/AS”
This example describes a VTS that is available from 0900 to 1700 daily; that builds its traffic image using AIS, radar and RDF, that provides information and traffic organisation services, and has communications with other VTSs or allied services.
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