Quote:
Originally Posted by dougpine
Also, a safety feature built in to the AIS units will automatically change the reporting interval based on speed and rate of turn, regardless of the nav status field, because lots of people forget to update that one.
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That's a good reminder. I couldn't remember the reporting intervals, so I had to look it up. This came directly from the Furuno FA100 User's Manual. It illustrates the need to update your nav status. At 23+ knots, you'd sure want your status (not to mention other targets) updated more often than every 3 minutes.
Ship’s navigation status Reporting interval
Moored 3 min
0-14 kt speed 10 s
0-14 kt speed with course change 3+1/3 s
14-23 kt speed 6 s
14-23 kt speed with course change 2 s
Speed higher than 23 kt 2 s
Speed higher than 23 kt with course change 2 s