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Vessel detectors
"Armond Perretta" wrote in message ...
Derek Weston wrote: ... electronic means to automatically detect vessels ... are of great value to us. We have a radar with a watch facility which is great, except it draws 30-odd watts, more that we can afford ... In general your solutions appear to be a bit more complex than is absolutely necessary. Just my point of view, of course. For example, my small Furuno "watches" on a scheduled basis and draws very little. You might want to consider a more energy-efficient radar. I don't think there is one, but would certainly be happy to be corrected. From what I have determined, 30W is typical for keeping the magnetron "alight" between periodic scans. ... Our radar detector works well, but ships often have their radars switched off. Are you sure of this, and if so, how? You are suggesting that these commercial vessels are operating illegally (which of course is possible, but, en masse, unlikely). Yup, quite sure of it. We have a radar detector on board. Others have found the same: "It's also interesting to note that during the transatlantic, an alarming number of vessel's contacted to evaluate our radar return, responded willingly but said, "please wait while I turn on the radar!" from http://www.ussailing.org/safety/Stud...arenhancer.htm 2) Hydrophone systems Perhaps a ships prop or other ship noise can be detected electronically. This leaves out vessels not propelled by machinery. True. |
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