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Yacht sunk by Ferry
"Jeff" wrote in message
. .. * otnmbrd wrote, On 4/12/2007 7:26 PM: AIS is not a "silver bullet". Although many ships are transitioning to "ECDIS" wherein they will end up having a screen with a chart/radar/AIS overlay, it is not all that common yet. In most cases you are still dealing with a seperate AIS screen which only list the targets and is only usefull if you have some reason to look at it..... so .....if they haven't seen the target visually and/or on radar, they may not check the AIS to see what's about/around. Prudence would say visual..... check the radar for targets with and without AIS, check the AIS for targets missed on radar.... and back to visual....i.e., with each new system you improve your lookout capabilities.....but only if you use them. But AIS adds an extra dimension - A smaller vessel that feels at risk of not being noticed can now hail a large vessel by name and ask if they are being tracked. That would make a huge difference when crossing busy lanes. I think it's definitely a net positive, except for the cost. I suppose it'll come down at some point. -- "j" ganz @@ www.sailnow.com |
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