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Old June 27th, 2009, 01:34 PM
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Capt_Anonymous Capt_Anonymous is offline
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Thumbs down No, no, and again, NO!!

Quote:
Originally Posted by bullyjohn View Post
...some of the best ais give you CPA these are the best well hope that help ...,,,??
My fears about AIS are coming true, and I'm seeing it more and more these days. Please, do not use AIS for collision avoidance!!! It was never designed to be used for anything but an identification system, and nothing more. The CPA info you get from your AIS is WRONG AT ALL TIMES, period. If you think it is safe to make collision avoidance decisions using AIS, you don't understand how it works. The only AIS unit that sends out correct information is the one you have personally set up and verified.

Please avoid the temptation to fall into the complacency that e-nav technology induces. Learn the stuff inside and out, use it in proper context and be skeptical at all times.
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