Category: AIS

AIS, this ‘n’ that #2 4

AIS, this ‘n’ that #2

* Rich Ray sent in a very interesting article at Lectronic Latitude which suggests that Class B AIS transponders will be made mandatory for recreational boats over 34’. I am quite dubious about this, though the...

Capn Voyager, playing AIS chicken over IP 1

Capn Voyager, playing AIS chicken over IP

That yellow vessel with the bold range rings is Capt. me off Boston a couple of days ago, or at least a simulated Capt. me. But the AIS targets were real! That’s because at least this beta version...

NemaTalker, a tester’s friend 0

NemaTalker, a tester’s friend

My head hurts! I’ve got 11 ECS packages installed here now, and I’ve been fooling with them on two computers for the last several days. Would you be surprised to hear that Windows XP has occasionally...

AIS targets on a PDA?, yes indeed! 0

AIS targets on a PDA?, yes indeed!

It makes more sense than you might think! That’s because so few plotters can yet display AIS targets, and a PC that can is often down below, too far from the helm for effective...

AIS near miss, Malacca Straits, part 2 0

AIS near miss, Malacca Straits, part 2

It’s great that Terry Sargent has joined our discussion about the AIS-documented near miss he had in the Malacca Straits. I really admire his desire to thoroughly debrief his experience, and his willingness to share it...

AIS, this and that #1 19

AIS, this and that #1

Whereas so many of you are interested in AIS, and so many news bits keep coming in, I’m starting a “this and that” series… * Nobeltec has put up the best looking AIS 100 manual to date....

Mind the leap second, an AIS ‘gotcha’ 0

Mind the leap second, an AIS ‘gotcha’

Wasn’t I just noodling about celestial mechanics? Well it turns out that for the first time since 1998, the time authorities need to insert a second into the world clock “to make up for...

Class B AIS transponder for $500, maybe 11

Class B AIS transponder for $500, maybe

So goes the headline in the Nov. issue of Digital Ship (click on link in “Navigation” section, and thanks, Raye), but there’s something odd about this otherwise very intriguing proposition. For one thing, SRT’s business development...

Near miss, AIS in the Malacca Straits 25

Near miss, AIS in the Malacca Straits

Go to this page to see a series of screen grabs illustrating a scary close call between the 32’ ketch Valhalla and the 132 meter tanker Miri Cahaya. I’d almost guess that the tanker...

AIS at Lauderdale, lots 12

AIS at Lauderdale, lots

The above snip from a Nobeltec VNS screen (full size here) shows how some of the megayachts tied stern-to at the Ft. Lauderdale show looked AIS-wise. There are obviously a few errors either in the vessel dimensions or...