System overview
Man_user_AI80_r2 3
Data reporting and transmission rates
AIS data as stated above are autonomously sent at different update
rates and thus reporting rates are dependent on the ship's navigational
mode. Dynamic information is dependent on speed and course
alteration while static and voyage related data are transmitted every 6
minutes or on request. Thus fast ferries will report their navigational
data at a higher update rate than ships at anchor.
Ship's Manoeuvring Condition Nominal Reporting Interval
Ship at anchor 3 min.
Ship 0 to 14 knots 10 sec.
Ship 0 to 14 knots and changing course 3 1/3 sec.
Ship 14 to 23 knots 6 sec.
Ship 14 to 23 knots and changing course 2 sec.
Ship > 23 knots 2 sec.
Ship > 23 knots and changing course 2 sec.
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