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Old 10-02-2023, 11:45 AM   #1
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Question AIS Pros & Cons?

I and thinking of adding an AIS transceiver or receiver. Being able to add that to your chart plotter and radar seems like a good idea.


Pros and cons anyone? Have you added AIS?
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Old 10-02-2023, 11:55 AM   #2
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Major positive.
Itís really helpful for me to see the ferries and when crossing the shipping lanes into Vancouver for example to see the 20 knot plus vessels well in advance.

Only negative is I turn it off displaying it on the plotter when starting to enter busy harbours as it generates too much clutter from boats that have left it on.
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Old 10-02-2023, 11:56 AM   #3
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Pro-I can see you
Con-you can see me
No AIS here
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Old 10-02-2023, 11:58 AM   #4
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Originally Posted by bowball View Post
Major positive.
Itís really helpful for me to see the ferries and when crossing the shipping lanes into Vancouver for example to see the 20 knot plus vessels well in advance.

Only negative is I turn it off displaying it on the plotter when starting to enter busy harbours as it generates too much clutter from boats that have left it on.
Is that with max zoom?
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Old 10-02-2023, 11:58 AM   #5
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Major positive.
Itís really helpful for me to see the ferries and when crossing the shipping lanes into Vancouver for example to see the 20 knot plus vessels well in advance.

Only negative is I turn it off displaying it on the plotter when starting to enter busy harbours as it generates too much clutter from boats that have left it on.
For that second situation, your plotter may have an option to hide targets below a certain speed. So in crowded harbors you could set it to hide anything below 1 - 2 kts to get anchored and docked boats and only show the moving ones.
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Old 10-02-2023, 12:11 PM   #6
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Absolutely good thing. No downside that I see.
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Old 10-02-2023, 12:22 PM   #7
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Is that with max zoom?
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For that second situation, your plotter may have an option to hide targets below a certain speed. So in crowded harbors you could set it to hide anything below 1 - 2 kts to get anchored and docked boats and only show the moving ones.
Thanks for reminding me. I keep meaning to check that which would solve the issue.

However, given the tightness of the space (several marinas) and sometimes narrow channels and how many don’t have AIS I’m not relying - or even considering it or my radar either which I shut off from transmitting not just displaying. Furuno tz3.
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Old 10-02-2023, 12:23 PM   #8
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Is that with max zoom?
Almost max zoom. And when zoomed out more itís all blue symbols.
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Old 10-02-2023, 12:44 PM   #9
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I do not watch radar once entering marina or even anchorage. Have it on and glance at it when underway. But if it is on, I leave it on until docked.

Just looked at marine traffic app on phone and see two boats in their berth with AIS on at my marina. Yes that can be a pain when entering a fairway.
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Old 10-02-2023, 12:54 PM   #10
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Depends where you boat. On the ICW in Texas and Louisiana it is sure handy. Tugs can call me and warn me of their manuvers.

Other than that most idiots I encounter don't listen to the radio, and have their speakers blaring. They have no concept of AIS.
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Old 10-02-2023, 01:12 PM   #11
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I was an early adaptor of class A AIS with a Furuno unit. That model has no ability to turn off transmit while keeping receive on, which doesn't bother me even though my boat's primary reason for existing is for fishing, and some guys really hate to show their position with the world. If you are in that camp, be sure to get a unit on which transmit can be separately turned off.
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Old 10-02-2023, 01:13 PM   #12
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Adding a Receiver -
Pro - you will be able to see freighters coming and predict crossings.
Con - I see none

Adding a Transceiver -
Pro- others will see you even in poor visibility
Con - government will use it against you if you wander into a restricted area.

Right now Canada is issuing fines to any AIS target that wanders into a whale zone. No transceiver, no fine.
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Old 10-02-2023, 01:20 PM   #13
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Adding a Receiver -
Pro - you will be able to see freighters coming and predict crossings.
Con - I see none

Adding a Transceiver -
Pro- others will see you even in poor visibility
Con - government will use it against you if you wander into a restricted area.

Right now Canada is issuing fines to any AIS target that wanders into a whale zone. No transceiver, no fine.
Really, is that fact? Anyone here been fined? So far all I heard was warnings given over the VHF, CG calling boat by name. I asked CG if they have spotters on shore, answer was no, so must be only boats with AIS getting called.
With chartplotter and radar I walk the edge of the line of the whale zones several times over the summer
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Old 10-02-2023, 01:20 PM   #14
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Pros - it's a useful tool that does add a bit of safety when in busy shipping/traffic areas.
Cons - none unless you are trying to hide.
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Old 10-02-2023, 01:24 PM   #15
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I have a friend who blew through the zone south of Pender and ignored repeated calls from the CG, he got to pay $500 for his foolishness. The area is clearly marked. Being a responsible boater does have some requirements.
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Old 10-02-2023, 01:36 PM   #16
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Con-you can see me

Why would that be a con?

I like it when ships can "see" us... and don't run over us...

-Chris
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Old 10-02-2023, 01:37 PM   #17
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For that second situation, your plotter may have an option to hide targets below a certain speed. So in crowded harbors you could set it to hide anything below 1 - 2 kts to get anchored and docked boats and only show the moving ones.
Very true! You can even set it to distance. Well that might depend on the model. But speed, yes.

I would not use phone based AIS apps. They use ground stations to relay boat positions. Case in point. - A boater I was with, was following me on his phone in the fog. We ether hit a blind spot for the ground stations or went to far off shore. He lost me as a target but we where only a mile apart. To add to this, there was a delay in updating the info. If he has AIS, he never would have lost me.
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Old 10-02-2023, 01:40 PM   #18
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Quote:
Originally Posted by tiltrider1 View Post
Adding a Receiver -
Pro - you will be able to see freighters coming and predict crossings.
Con - I see none

Adding a Transceiver -
Pro- others will see you even in poor visibility
Con - government will use it against you if you wander into a restricted area.

Right now Canada is issuing fines to any AIS target that wanders into a whale zone. No transceiver, no fine.
Simple answer...don't wander into restricted areas that are identified on the ENC charts! I think AIS should be mandatory.
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Old 10-02-2023, 01:41 PM   #19
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I have a friend who blew through the zone south of Pender and ignored repeated calls from the CG, he got to pay $500 for his foolishness. The area is clearly marked. Being a responsible boater does have some requirements.
Almost each time I go by that zone someone is inside of it and the CG calls them nicely.
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Old 10-02-2023, 01:41 PM   #20
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Only negative is I turn it off displaying it on the plotter when starting to enter busy harbours as it generates too much clutter from boats that have left it on.

Ours has a setting for target speeds; less than X usually weeds out all the docked vessels.

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