Wayne.B wrote in
:

The Navtex broadcasts have much of this. You can receive them on an
ICOM802 with a Pactor, Airmail and a laptop.



SO obsolete plotting manually from some stupid 1930 teletype
transmission.

AIS shore stations operated by someone who keeps up with changes in all
the data in your LOCAL area, so you can notify him, directly, of any
changes to objects that create a safety hazard, broadcast these objects
in the datastream with complete identification texts that open up by just
pointing to them on the AIS display. These objects are graphically
represented as to what they are, their bouy number for instance, color,
etc. to make the radar picture even more informative than just showing
the moving vessels.

CG across the country should already be online with AIS objects in every
port and on every waterway. We'll easily get what little money it takes
to make this happen by NOT writing a new construction contract on that
pretty front gate house the admiral wants to waste the money on.

Damn good idea, we must promote it all over.

It must not be a IALA A and B solution, that's a looser thing....

regards
/Børge - Denmark -Scandinavia


"Larry" skrev i en meddelelse
...
Wayne.B wrote in
:

The Navtex broadcasts have much of this. You can receive them on an
ICOM802 with a Pactor, Airmail and a laptop.



SO obsolete plotting manually from some stupid 1930 teletype
transmission.

AIS shore stations operated by someone who keeps up with changes in all
the data in your LOCAL area, so you can notify him, directly, of any
changes to objects that create a safety hazard, broadcast these objects
in the datastream with complete identification texts that open up by just
pointing to them on the AIS display. These objects are graphically
represented as to what they are, their bouy number for instance, color,
etc. to make the radar picture even more informative than just showing
the moving vessels.

CG across the country should already be online with AIS objects in every
port and on every waterway. We'll easily get what little money it takes
to make this happen by NOT writing a new construction contract on that
pretty front gate house the admiral wants to waste the money on.

"Børge Wedel Müller" wrote in news:439473d3$0
:

Damn good idea, we must promote it all over.

It must not be a IALA A and B solution, that's a looser thing....

regards
/B›rge - Denmark -Scandinavia




I just think the organisation that installs most of the obstructions, the
bouys and markers and jetties, should be the ones to maintain the
database AIS uses to place these obstructions on your screens. When the
bouy tender changes out a bouy, it spots it location via GPS and that
data goes in immediately, not after grinding its way through a huge
bureaucracy, but locally, so any faulty data can also be corrected,
immediately, locally.

"Coast Guard, this is the pilot boat. Marker 22 has been dragged about
200 meters to the southwest of its position by the heavy surf and current
we had last night."

CG immediately issues a notice to mariners, now. When, in 2048AD by the
time they arise from the seemingly dead and get AIS online, the person
generating the notice to mariners also updates the position and WARNING
to the fixed-position AIS transmitter for the area. Coming down the
channel, you suddenly see this alarm and bouy movement to its true
position. No paper form had to be digested onto a paper chart. No
multi-week delays even getting the notice to mariners from the bloated
bureaucrats.

AIS could easily do this IF the authority tasked with that bouy's
maintenance is also tasked with its AIS data transmission....

I'm also heavily in favor of them installing a wide area repeater on the
big TV tower to extend the range of this data output further than the 8
miles their VHF range always seems to be....

Well, at least in the Malacca Straits some buoys are equipped with AIS transmitters sending information on their type, position, light status and weather information.
On the Great Lakes meteorological and hydrological data is broadcasted every 15 mins.

Bureaucrats however still seem to be quite reluctant when it comes to using the full potential of AIS. The systems offers the possibility to broadcast safety messages, tidal windows, info on closed fairways and even re-broadcasting of radar targets that are not equipped with AIS.

Best regards,

Holger

www.yacht-ais.com

Holger wrote in news:Holger.1zo5c7
@news.boatbanter.com:

Well, at least in the Malacca Straits some buoys are equipped with AIS
transmitters sending information on their type, position, light status
and weather information.
On the Great Lakes meteorological and hydrological data is broadcasted
every 15 mins.



None of the bouys have AIS transmitters on them. There is a shore
station with a tall antenna in the area that transmits all the data for
all the stationary objects every, I think the specs say, 10 minutes, so
as not to jam up the time as the objects aren't moving, anyways. This
shore station may have a range of over 50 miles from its lofty antenna on
some communications tower. What you're hearing is the bouys' data sets
from it, not the bouys, themselves. Your VHF AIS system isn't a radar
looking for RF from an object. It's simply displaying data sent from
anywhere about the object at that location.

If someone reported a container had fallen off a containership at X
location and the end of it was sticking out of the mud, the guys running
the AIS fixed stuff transmitter (it doesn't listen, it's just a
transmitter) simply add the data on this container at X location to the
computer that stores and runs the transmitter, the container instantly
showing up on everyone's AIS display blinking away in some sort of new
warning mode I haven't seen, yet.

Instant, graphical, constantly updated and displayed notice to mariners
is one of the finest things AIS can do if the bureaucrats tasked with the
notice to mariners will cooperate and not treat AIS like they're being
forced to do slave labor in its upkeep. It replaces those way-too-late-
for-anything stupid paper reports of old in a very beneficial way.

Hi Larry,

AIS offers both remote broadcasting of AIS data for buoys etc. and also buoys that transmit themselves. Those self-transmitting buoys are mounted in the Malacca Strait to my certain knowledge. They are mounted with these devices: http://www.zenilite.co.jp/english/Home%20page.htm and I was told so by the manufacturer.
Contrary, on the Great Lakes all data is broadcasted from the shore stations. (I only know of met/hydro/traffic data, do they also broadcast data on buoys?).

As for alarms on dangers to navigation via AIS, the problem is that they can, at the moment, only be transferred as plain text messages. But it would be possible for the IMO (or any competent agency for its area) to specify a binary message with exactly this context....
I know this, because I am developing AIS software....

Best regards,
Holger

On Sun, 04 Dec 2005 20:47:03 -0500, Larry wrote:

(Mic) wrote in :

Hey Larry you might be interested in Jacks links www.ganssle.com


Thanks, I'll take a look.

Anyone noticing or knowing about AIS fixed obstructions/bouys/etc. being
transmitted from shore stations in their area, please let us all know what
you know...thanks, too!

http://www.yachtvalhalla.net/projects/ais/ais.htm

"AIS (Automatic Identification System)

The International Maritime Organization has ruled that all vessels of
300 gross tons or greater and all passenger vessels must carry AIS
transponders. These transponders broadcast their own AIS data and
receive it from other vessels. Information such as the vessel
identity (MMSI, vessel name and callsign), position, rate of turn,
course, speed, destination, and cargo is continuously broadcast over
VHF frequencies and displayed on dedicated or integrated navigation
systems. Though these active systems are expensive, there are low
cost, receive only units available that provide, for the small boat
owner, a display of much greater use than radar for these 'big boys'."

Good graphic and images

http://www.yachtvalhalla.net/projects/phone/phone.htm
Satellite Telephone (December 2003)

Mic

On Wed, 07 Dec 2005 19:32:22 GMT, (Mic) wrote:

Though these active systems are expensive, there are low
cost, receive only units available that provide, for the small boat
owner, a display of much greater use than radar for these 'big boys'."

===========================================

The biggest issue for small boats is not seeing the big guys (they
show up easily on RADAR), but being seen. Only an active AIS
transponder can provide that assurance since small boats are easily
overlooked or missed entirely on a large ship's RADAR. As large ships
come to rely more on AIS, and devote more time to monitoring, this
will become even more of a critical issue.

Hi all

I do now want to get "started" with passive receiver for testing.

Have you an adress/link to a "starter" kit? (hopefully below 3-400USD)

Regards
/Børge

"Wayne.B" skrev i en meddelelse
...
On Wed, 07 Dec 2005 19:32:22 GMT, (Mic) wrote:

Though these active systems are expensive, there are low
cost, receive only units available that provide, for the small boat
owner, a display of much greater use than radar for these 'big boys'."

===========================================

The biggest issue for small boats is not seeing the big guys (they
show up easily on RADAR), but being seen. Only an active AIS
transponder can provide that assurance since small boats are easily
overlooked or missed entirely on a large ship's RADAR. As large ships
come to rely more on AIS, and devote more time to monitoring, this
will become even more of a critical issue.

Google on NASA AIS Engine.
g


"Børge Wedel Müller" wrote in message
...
Hi all

I do now want to get "started" with passive receiver for testing.

Have you an adress/link to a "starter" kit? (hopefully below 3-400USD)

Regards
/Børge

"Wayne.B" skrev i en meddelelse
...
On Wed, 07 Dec 2005 19:32:22 GMT, (Mic) wrote:

Though these active systems are expensive, there are low
cost, receive only units available that provide, for the small boat
owner, a display of much greater use than radar for these 'big boys'."

===========================================

The biggest issue for small boats is not seeing the big guys (they
show up easily on RADAR), but being seen. Only an active AIS
transponder can provide that assurance since small boats are easily
overlooked or missed entirely on a large ship's RADAR. As large ships
come to rely more on AIS, and devote more time to monitoring, this
will become even more of a critical issue.