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  #21  
Old 01-05-2013
Da Most Educated Red Neck
 
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Re: AIS alarm

Quote:
Originally Posted by MarkofSeaLife View Post
Notice the only people who slag off AIS do not have AIS?
It's laughable.

Mark
Yes, it is but it's normal. Just the production boats, so many are putting them down. . May that is the way they think they can improve their presence on the Net. LOL.
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Old 01-05-2013
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Re: AIS alarm

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Originally Posted by rockDAWG View Post
.

Often we turn off our AIS when entering busy harbor because it is too much distraction, we just rely on our eyes. At one time, when going into Inner Harbor, AIS screen showed a boat right in front to us. But there was nothing. .
Turn it off when you need it morst, Combinatuion of AIS, radar and your eyes is the best. I dont need AIS on a long stretch in the ocean in vroad daylight. I really dont need oit at night. Like Zanskin posted I have my radar come on every 15 minutes. It will alert me to all objects, not jkust the AIS equipped ones.

And oh yes, I have an AIS transponder and received hooked up trough our Raymarine system. It is an added balnket of security to me. I dpend on the radar molre though in fog and at night.

Dave
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  #23  
Old 01-05-2013
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Re: AIS alarm

Hey,

The alarms on the radio (CPA, weather, etc.) are pretty loud. Loud enough so that I usually jump when I hear it.

On my boat the VHF is mounted down below, near the nav station. I have a remote mic (RAM mic) mounted near the cockpit. Usually the volume on the main VHF is down low and the RAM Mic is higher so I can hear it when I'm on deck. The alarms are loud, piercing, and don't stop until you acknowledge them.

Barry


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Originally Posted by rockDAWG View Post
I checked into the one you suggested. It seems workable to my need. The concern I have is that the CPA alarm is not very loud. It will not wake up if I was sleeping. I need one that can trigger an external siren. I am not sure if it has a way to do that. As I looked at the back panel of the unit, there is no external output for this function. I guess one can do this via a computer, but it will make it more complicated that it has to be.

I am NOT saying I will sleep when sailing thru the shipping channel or into New York Harbor, But I will sleep if sailing to Bermuda, Azores or UK. There is no other way around.
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  #24  
Old 01-05-2013
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Re: AIS alarm

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Originally Posted by MarkofSeaLife View Post
Notice the only people who slag off AIS do not have AIS?


Mark
I hope you do not put me in that category. While I do not own a boat, the boat I use most often fr instruction has a AIS receiver. I have an adapter that I use to integrate AIS with OpenCPN.

On the boat I brought back from Maui, the AIS receiver was invaluable for monitoring the container ship with which we rendezvoused for a medical evacuation.

I also have Marine Traffic on my Smartphone.

AIS is not yet the poor man's radar. It is useless in Gulf of Aden and few other locals noted for pirates.
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  #25  
Old 01-05-2013
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Re: AIS alarm

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Originally Posted by jackdale View Post
I hope you do not put me in that category.


On the boat I brought back from Maui, the AIS receiver was invaluable for monitoring the container ship with which we rendezvoused for a medical evacuation
I'm sorry, Jack, but I do.
It's great you have used a receiver and in serious purpose, but its nothing like using a transceiver and knowing where every ship is that's far outside Radar range, out of visual range even at night out of range of the faintest glow on the horizon.

You have not seen a ship divert around you by AIS. You have not experienced being at one with a ship many times your size.

When you get to use a proper transceiver on a long passage and coastal work then and only then will you understand the value of AIS and what I mean.

Once again, I apologise, but its important I am forthright in this.

Mark
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  #26  
Old 01-05-2013
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Re: AIS alarm

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Originally Posted by BarryL View Post
Hey,

The alarms on the radio (CPA, weather, etc.) are pretty loud. Loud enough so that I usually jump when I hear it.

On my boat the VHF is mounted down below, near the nav station. I have a remote mic (RAM mic) mounted near the cockpit. Usually the volume on the main VHF is down low and the RAM Mic is higher so I can hear it when I'm on deck. The alarms are loud, piercing, and don't stop until you acknowledge them.

Barry
Agreed, my Standard Horizon Matrix alarm is pretty effective... If one really had doubts, you could install a second Ram mic outlet at the head of the seaberth, so you could have the mic literally next to your ear...

If that isn't sufficient, perhaps the OP should re-consider the practice of singlehanding... (grin)

anyone planning to do extended voyaging alone, really needs to attempt to perfect the art of sleeping with one eye open, anyway...

Last edited by JonEisberg; 01-05-2013 at 06:03 PM.
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Old 01-06-2013
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Re: AIS alarm

Not to be argumentative, I just don't understand why you would even care "knowing where every ship is that's far outside Radar range, out of visual range even at night out of range of the faintest glow on the horizon". Sure in an emergency, it's nice to have all the help one can get, but really, isn't Lat/Long from a gps enough to get two vessels within sight of one another at sea?
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  #28  
Old 01-06-2013
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Re: AIS alarm

capta - I've had AIS targets beyond visual and radar range show up and the CPA (closest point of approach) was within a mile, but in 30-40 minutes. Since I'm alone and want to sleep or catnap, this knowledge is very important to me. In the case abvoe, the big cargo vessel altered course very slightly (I have an AIS transponder, so they must have seen my signal) and suddenly the CPA grew towards 10nm. I surmise that the officer of the watch altered course so that they wouldn't need to wake the captain, who most likely has some standing orders to the effect of wanting to be awakened if anything approaches within 5nm. Some of those big boys go way in excess of 20 knots, meaning that there isn't really a great amount of time between them being below the horizon and possibly right next to (or on top of) you.
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  #29  
Old 01-06-2013
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Re: AIS alarm

Quote:
Originally Posted by rockDAWG View Post
Quote:
Originally Posted by MarkofSeaLife View Post
Notice the only people who slag off AIS do not have AIS?
It's laughable.

Mark
Yes, it is but it's normal. Just the production boats, so many are putting them down. . May that is the way they think they can improve their presence on the Net. LOL.
I think capta's point was simply that traditional watchstanding methods and navigational/piloting techniques have been "relaxed" somewhat in many cases due to the advent of such technology... And I would agree...

I'd suggest that if you doubt there's an element of truth to that, you haven't been paying very close attention to what many out there are doing... And, it's not just stinkpotters who are guilty of this... (grin)
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  #30  
Old 01-07-2013
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Re: AIS alarm

Quote:
Originally Posted by JonEisberg View Post
I think capta's point was simply that traditional watchstanding methods and navigational/piloting techniques have been "relaxed" somewhat in many cases due to the advent of such technology... And I would agree...

I'd suggest that if you doubt there's an element of truth to that, you haven't been paying very close attention to what many out there are doing... And, it's not just stinkpotters who are guilty of this... (grin)
Everyone has their way how they use the new technology to enhance their survival. There is no one-fits-all situation here. We can voice our preferences and share our know-how. Other than that, it is up to the other to decide for themselves. If it happened that he becomes the recipient of the Darwin Award, all glory to him. Just hope that he has not fathered any child. Let the natural selection process begins again.

Whoever lives the longest and dies at Sea wins !!!
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