Ok, just now pissed off with an AIS
target that disturbed my relaxation by entering my safety
zone. The target will appear on my MFD for perhaps 30 seconds and then disappear for 2 or 3 minutes. As a result it kept setting off my alarm
It appears as type "unknown", no name, call sign or anything else that is programmed normally into a transponder, other than MMSI..
It has me wondering if the yacht is using an AIS
TX that is designed for crab pot, It makes sense that a battery
operated transmitter designed for a stationary object would shut down its transmitter to save battery
Whilst for me in good daylight visibility it is just an annoyance, I could see that on the bridge of a ship in poor visibility that they might assume it is a stationary crab pot. if they are not going to run over its current
position, they might either turn off the alarm
or even the class B RX.
So saving money
might be a bad mistake.
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