[PUP] The changing times for cruisers

[John Marshall]

You are correct... you can load the AIS with any kind of info you  
want, EXCEPT the position, COG, SOG.

The key is that, being a transponder, CG and Vessel Monitoring people  
know exact where everyone is and is going, even boats too small or  
distant to show up clearly on radar.  Nice, fat, data-rich targets  
instead of flaky blips on a scope. Recall that virtually all boating  
in Singapore is international. The entire country is only 20 miles by  
10 miles (or something like that). Like with their airport, where 100%  
of the passengers are international, they have a very special  
situation when it comes to border management and security.

Homeland Security has proposed the same thing for the US (AIS  
transponders), but (so far) it hasn't gone anywhere. Imagine if every  
boat out there had a transponder... our screens would be a solid mass  
of targets in the summer. I much prefer the current arrangement where  
all the big guys plus a handful of yachts have transponders. Having  
runabouts buzzing around, making constant course changes at 25 knots,  
would set off momentary collision alarms all the time.

John Marshall
N5520-Serendipity
Sequim Bay, WA

On Dec 19, 2007, at 6:34 AM, Jim Ague wrote:

>> The ability for the custom/CG/Border Patrol/etc of a jurisdiction to
>> monitor
>> all traffic approaching its coast/harbors/waterways will be a  
>> requirement.
>> What better way than AIS currently?
>>
> How does AIS protect a harbor? Doesn't the vessel's captain/owner  
> load its
> AIS with the data he wants it to transmit? Couldn't a perp put  
> "identity
> theft" info into his AIS?
>
> -- Jim Ague 
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