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Time, when the position was measured in UTC
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Course over ground (COG)
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Speed over ground (SOG)
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Heading (HOG)
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Type of vessel
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Rotational speed/turn rate
Static information:
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Call sign and name of the vessel
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Length and width of the vessel
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IMO-number of the vessel, if existent
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Type of vehicle
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Position of the GPS sensor onboard
Journey-related information:
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Draught of the vessel
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Type of cargo
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Port of destination and estimated time of arrival (ETA)
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Route plan, optional
The block of dynamic information is the most important block with
regard to threatening collisions. Therefore this block of information is
transmitted in a compulsory way, depending on the vessels movement.
The following table shows the mandatory repetition rate of the “Class
A” Transceiver linked to the ship’s movement:
anchored vessels:
3 minutes
vessels at 0 – 14 kn:
10 seconds
vessels at 0 – 14 kn, fast maneuver:
3.3 seconds
vessels at 14 – 23 kn:
6 seconds
vessels at 14 – 23 kn, fast maneuver: 2 seconds
vessels at > 23kn:
2 seconds
vessels at > 23 kn, fast maneuver:
2 seconds
The static data such as information regarding the journey is dispersed
every 6 minutes.
This data is sent in turns according to the stipulated period to the one
(161.975 MHz) and subsequently to the other channel (162.025MHz).
