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#21
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Danforth used to make a telltale compass for about $100. I foolishly
let one go with my old boat, and now I can't find one. I actually ordered one from a "closeout" a few months ago, and was told I was too late. I anyone has a source, I'd like to get one! Evan Gatehouse wrote: "rhys" wrote in message ... On Mon, 29 Nov 2004 13:33:03 GMT, Geoff Schultz wrote: I can see it from the v-berth where we sleep, so it's a quick way to tell what's going on with the wind without having to get up. Ah, my kind of sailor. I'll bet you've recycled a cloudy-domed bulkhead compass for the same "roll over, check course, resume nap" tactic G R. That's one item I'd like to find: a "read from below" compass - the kind you mount on the overhead above your berth. Anybody have a source? |
#22
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On Tue, 30 Nov 2004 04:20:48 -0500, James wrote:
Glen "Wiley" Wilson wrote: On Mon, 29 Nov 2004 23:14:17 -0800, "Evan Gatehouse" wrote: Ah yes, the telltale compass. I've wanted one for years. Take a look he http://makeashorterlink.com/?B2BC526E9 and you'll see why I don't have one yet. Sure like to find one at a reasonable price. Plastimo makes a great hand bearing compass that comes with a mounting bracket. You can mount it to a bulkhead or overhead and read it no problem while mounted, and snap it out of the mount to use on deck for taking bearings. Cost is only about $100.00. Two versions, one lighted (batteries) one not. I've had one for a couple of years. It's ideal for use near a bunk. Beats getting out of a warm bed anytime! Indeed. I have a Silva bearing compass on the bulkheard. It works in that position, though it won't work on the overhead. Regardless, it lacks somewhat in aesthetics. I prefer to minimize the ugly lumps of plastic wherever possible. :-) __________________________________________________ __________ Glen "Wiley" Wilson usenet1 SPAMNIX at world wide wiley dot com To reply, lose the capitals and do the obvious. Take a look at cpRepeater, my NMEA data integrator, repeater, and logger at http://www.worldwidewiley.com/ |
#23
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How did the "captain's compass" get into the "Air-X marine wind generator"
thread? Kind of annoying. Doug s/v Callista "Evan Gatehouse" wrote in message ... "rhys" wrote in message ... On Mon, 29 Nov 2004 13:33:03 GMT, Geoff Schultz wrote: I can see it from the v-berth where we sleep, so it's a quick way to tell what's going on with the wind without having to get up. Ah, my kind of sailor. I'll bet you've recycled a cloudy-domed bulkhead compass for the same "roll over, check course, resume nap" tactic G R. That's one item I'd like to find: a "read from below" compass - the kind you mount on the overhead above your berth. Anybody have a source? -- Evan Gatehouse you'll have to rewrite my email address to get to me ceilydh AT 3web dot net (fools the spammers) |
#24
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On Tue, 30 Nov 2004 18:46:50 -0500, "Doug Dotson"
wrote: How did the "captain's compass" get into the "Air-X marine wind generator" thread? Kind of annoying. Doug s/v Callista Doug, your newsreader or news serverr has scrambled your message list. This thread is properly called "Captain's Compass". I suggest to fix it you delete this group as subscribed, then RE-subscribe, which will bring you several months' worth of messages. Delete from the beginning to, say, the last month (Oct 30). This will preserve all threads currently in play (likely that you are following) and the NEXT time you download news group messages, you should see that all messages are where they should be. R. |
#25
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Last time I searched, I only found one at some "elegant" place like Sharper
Image, or some jewelry place... it was very nice, but about $800. I can't remember where it was, but if you find one, let us know! -- Keith __ There are three simple rules for making a smooth return to your slip. Unfortunately no one knows what they are. "rhys" wrote in message ... On Mon, 29 Nov 2004 23:14:17 -0800, "Evan Gatehouse" wrote: R. That's one item I'd like to find: a "read from below" compass - the kind you mount on the overhead above your berth. Anybody have a source? Not without spending ten minutes with Google...but I suspect that the type of gimballed aviation compass of several decades back and mountable on bulkheads would work quite well if you kept it away from nearby steel deck gear. R. |
#26
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rhys wrote:
On Tue, 30 Nov 2004 18:46:50 -0500, "Doug Dotson" wrote: How did the "captain's compass" get into the "Air-X marine wind generator" thread? Kind of annoying. Doug s/v Callista Doug, your newsreader or news serverr has scrambled your message list. This thread is properly called "Captain's Compass". I suggest to fix it you delete this group as subscribed, then RE-subscribe, which will bring you several months' worth of messages. Delete from the beginning to, say, the last month (Oct 30). This will preserve all threads currently in play (likely that you are following) and the NEXT time you download news group messages, you should see that all messages are where they should be. R. Doug Don't bother unsubscribing and resubscribing. Further up someone mentioned that they could view their LED based amp output from the wind genny from their v berth and could guestimate wind speed without getting out of bed. From there someone else suggested checking a compass too, presumably to see if they had swung at anchor. Hence the change of subject. At least they changed the subject line so you can avoid reading it. That's not always done. Anyway thread divergence at that point was inevitable. If you wait long enough the discussion will turn to guns aboard (within reach of the bunk of course). : ) Jimmy |
#27
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James wrote in
: rhys wrote: On Tue, 30 Nov 2004 18:46:50 -0500, "Doug Dotson" wrote: How did the "captain's compass" get into the "Air-X marine wind generator" thread? Kind of annoying. Doug s/v Callista Doug, your newsreader or news serverr has scrambled your message list. This thread is properly called "Captain's Compass". I suggest to fix it you delete this group as subscribed, then RE-subscribe, which will bring you several months' worth of messages. Delete from the beginning to, say, the last month (Oct 30). This will preserve all threads currently in play (likely that you are following) and the NEXT time you download news group messages, you should see that all messages are where they should be. R. Doug Don't bother unsubscribing and resubscribing. Further up someone mentioned that they could view their LED based amp output from the wind genny from their v berth and could guestimate wind speed without getting out of bed. From there someone else suggested checking a compass too, presumably to see if they had swung at anchor. Hence the change of subject. At least they changed the subject line so you can avoid reading it. That's not always done. Anyway thread divergence at that point was inevitable. If you wait long enough the discussion will turn to guns aboard (within reach of the bunk of course). : ) Jimmy Did I also mention that I have a RayMarine MaxiView display that I can also see from the berth and I can program it to display any of the instrument data such as wind/depth/course/speed/etc? :-) -- Geoff |
#28
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On Wed, 01 Dec 2004 07:35:51 -0500, James wrote:
Anyway thread divergence at that point was inevitable. If you wait long enough the discussion will turn to guns aboard (within reach of the bunk of course). Actually, it just did. :-) __________________________________________________ __________ Glen "Wiley" Wilson usenet1 SPAMNIX at world wide wiley dot com To reply, lose the capitals and do the obvious. Take a look at cpRepeater, my NMEA data integrator, repeater, and logger at http://www.worldwidewiley.com/ |
#29
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On Wed, 01 Dec 2004 16:06:58 GMT, Geoff Schultz
wrote: Did I also mention that I have a RayMarine MaxiView display that I can also see from the berth and I can program it to display any of the instrument data such as wind/depth/course/speed/etc? :-) Actually, I think that's an excellent idea, but I rolled my own. See the crass commercial message in my sig. :-) I've been asked to extend the program with an intelligent anchor watch. Something that would suppress spurious alarms when the gps loses lock for a few seconds. I'd never have thought of that myself, but it's a fact that I've never had a complete night without my gps deciding Scotty beamed me a few hundred yards in some random direction. Which causes OziExplorer's otherwise excellent anchor watch to start screaming. It's doable, but the data filtering will be tricky. I've found that you can't always trust the gps to notice that it's lost accuracy, so I'll have to implement some kind of statistical filter that ignores the big jumps but notices a small steady drift. I haven't quite worked out how to handle wind and current reversals yet. If you could do that, you could tighten the safe distance quite a bit. It seems that treating the safe swing area as a circle around your current position, as anchor alarms do, is wrong. It's really a circle around the anchor's position. Maybe a bearing and distance to the anchor float could be used as an offset to current position? __________________________________________________ __________ Glen "Wiley" Wilson usenet1 SPAMNIX at world wide wiley dot com To reply, lose the capitals and do the obvious. Take a look at cpRepeater, my NMEA data integrator, repeater, and logger at http://www.worldwidewiley.com/ |
#30
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On Wed, 01 Dec 2004 19:03:59 GMT, "Glen \"Wiley\" Wilson"
wrote: It's doable, but the data filtering will be tricky. I've found that you can't always trust the gps to notice that it's lost accuracy, so I'll have to implement some kind of statistical filter that ignores the big jumps but notices a small steady drift. My recent GPS experience differs from yours, tracking pretty steadily without glitchy jumps. I haven't quite worked out how to handle wind and current reversals yet. If you could do that, you could tighten the safe distance quite a bit. It seems that treating the safe swing area as a circle around your current position, as anchor alarms do, is wrong. It's really a circle around the anchor's position. Maybe a bearing and distance to the anchor float could be used as an offset to current position? I have some very convincing GPS tracks watching my boat swing around its anchor, showing the circle around the anchor. I like having the alarm wake me in the night even if it's just a swing through a significant chunk of arc. I also like having the GPS maintaining it's display track right by my berth. It's very reassuring to look over and see my position smack in the middle of hours of accumulated data. Ryk |
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