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Forum: Marine Electronics 20-05-2013, 14:51
Replies: 526
Views: 46,996
Posted By nigel1
Re: Please turn your AIS off when docked/moored/anchored

Evans,

Looks like the USCG can (and has) done just this, although it appears to have been done inadvertently.
Forum: Marine Electronics 20-05-2013, 13:55
Replies: 526
Views: 46,996
Posted By nigel1
Re: Please turn your AIS off when docked/moored/anchored

Mark and Paul

I am 99% certain that internet AIS does not read the nav status, but instead makes an assumption, boat speed less than 0.3 kts and it assumes it is either anchored or moored.
I've...
Forum: Marine Electronics 20-05-2013, 03:46
Replies: 526
Views: 46,996
Posted By nigel1
Re: Please turn your AIS off when docked/moored/anchored

I'm sure you knew this, but Rule 34 (d)
When vessels in sight of one another are approaching each other and from any cause either vessel fails to understand the intentions or actions of the other,...
Forum: Marine Electronics 20-05-2013, 00:14
Replies: 526
Views: 46,996
Posted By nigel1
Re: Please turn your AIS off when docked/moored/anchored

The CO of the Porter was really taking the p#ss ordering 5 short after trying to cut across the bows of the stand on ship.:(
Forum: Marine Electronics 20-05-2013, 00:01
Replies: 526
Views: 46,996
Posted By nigel1
Re: Please turn your AIS off when docked/moored/anchored

The SMS facility on Class AIS is used frequently for transmitting navigation warnings and safety alerts. I use it whenever we are towing, a nav warning is transmitted to all ships every 4 hours.
...
Forum: Marine Electronics 19-05-2013, 16:25
Replies: 526
Views: 46,996
Posted By nigel1
Re: Please turn your AIS off when docked/moored/anchored

Had a young second third mate who found out he could use SMS facility with AIS, but not smart enough to delete the TX and RX files. I found out he was using it in much the same way as with mobile...
Forum: Marine Electronics 19-05-2013, 06:21
Replies: 526
Views: 46,996
Posted By nigel1
Re: Please turn your AIS off when docked/moored/anchored

A question for those who have a good understanding of the workings of AIS, and this concerns false AIS targets.
Experienced this in two separate locations, and on more than one occasion.
Most...
Forum: Marine Electronics 18-05-2013, 11:01
Replies: 526
Views: 46,996
Posted By nigel1
Re: Please turn your AIS off when docked/moored/anchored

In the area I'm working at the moment, there is not a great number of pleasure boats to contend with, and presently AIS transponders on these craft is not yet common place.
I can foresee an issue...
Forum: Marine Electronics 18-05-2013, 03:17
Replies: 526
Views: 46,996
Posted By nigel1
Re: Please turn your AIS off when docked/moored/anchored

Hi Paul

AIS unit we use is a Furuno FA-1501 Transponder connected to a FA-1501 display unit. The display unit is pretty similar to the display units you see on those combined VHF/AIS sets, its...
Forum: Marine Electronics 17-05-2013, 06:21
Replies: 526
Views: 46,996
Posted By nigel1
Re: Please turn your AIS off when docked/moored/anchored

As far as I am aware, AIS is not interrogated, it just transmits, and any receiver in range will pick up the data.
Like the OP, i would prefer it if boats with Class B, tied up at the dock would...
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