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Subject: TWL: RE: Re: AIS implementation
From: Arild Jensen (elnav@XXX.XXX)
Date: Sun Jan 26 2003 - 12:26:23 EST
Larry wrote
The problem is that controlling traffic in a waterway is analogous to
landbased traffic control when hikers, bikers, race cars, busses, and diesel
trailer trucks all use the same roadway. >>>>> snip<<<<<<<
While it may appear to infringe on individual freedom, the
only answer appears to be to reduct the price and size of AIS transponders
to
the size and price of cheap transistor radios and require ALL craft to be so
equipped.
REPLY
The logistics of doing so is daunting. At present, AIS is using a narrow
part of the spectrum.
The process of polling and getting a response from each vessel is already
causing some congestion.
Spectrum allocation is a hotly contested subject, and will remain so for
years to come.
This has been one of the obstacles to getting AIS implemented to date.
As with civilian aviation, you are more likely to see segregated zones for
each class of vessel/aircraft.
Those not equipped with transponders must stay in designated corrridors.
Here in the Strait of Georgia ther is an underwater weapons test range and
civilian small craft cannot enter.
A picket boat is on active duty whenever tests are in progress but the whole
area is designated a permanently restricted zone.
I expect this will become the norm in the vicinity of most commercial
harbours and other sensitive areas.
Yes it does restrict freedom of movement, some would consider it an
infringement of their personal liberty; but what is the alternative?
Regards
Arild
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