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Old 13-02-2018, 22:58   #16
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Re: Weirdest AIS seen!

Using Marinetraffic a few weeks ago I first spotted 'Long Chuan' in the suburbs of an inland Chinese city.... now she is roaming some forest in the US... and is being received by a monitoring station in the UK...

https://www.marinetraffic.com/en/ais...l:LONG%20CHUAN
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Old 14-02-2018, 05:07   #17
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Re: Weirdest AIS seen!

Re Singapore Straits. Yes that is intense, but use the AIS tools available in OpenCPN from the menubar. Limit range, attunate targets, etc.
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Old 14-02-2018, 05:21   #18
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Re: Weirdest AIS seen!

Hi Rick,

I use the AIS ship settings regularly and change alter them based on conditions. If you didn't change the settings in the Singapore Straits, the entire screen would turn red and you would be on a collision course with every vessel in the Straits.

You can easily limit what is being shown on OpenCPN to limit the range of vessels but that is not the problem here. I think the real problem in this situation is that there are so many vessels competing for the same VHF bandwidth that messages are either colliding or being missed entirely. All those vessels are sharing that same VHF frequency and there is too much traffic to deliver those messages. There is a physical limit to how many vessels can actively be processed in the time frame allowed.

I'm very interested to see if Jeff from Vesper responds.
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Old 14-02-2018, 05:33   #19
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Re: Weirdest AIS seen!

Yes, the 2 channels for commercial could be a limitation. I'm always interested in Jeff's responses.
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Old 14-02-2018, 13:22   #20
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Re: Weirdest AIS seen!

What would be most appropriate for fishing nets?
AIS or ATON?
Can ATON be used by commercial or private entities or are they more controlled?

Quote:
Originally Posted by jeffrobbins View Post
That's someone with an activated AIS-SART (not AIS-MOB). Not a proper use of course. We've seen cases where people use AIS-SARTS to locate fishing nets so perhaps that's what's going on here.

And the manufacturer number #85 isn't in the list of registered manufacturers so who knows what the device is.

A good example of AIS being misused and creating a nuisance (at best) for others.

AIS-SART Manufacturer IDs
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