- This topic has 31 replies, 7 voices, and was last updated 17 years, 1 month ago by
.
-
Posts
-
-
Couple of links:
Panbo reviewed by NMEA network design which was a very rough 1st draft:
http://www.panbo.com/archives/2009/09/sharing_n2kbuilder_files_for_the_common_good.htmlI posted my general plan for my big winter push refit
http://www.deepplaya.com/post/Let-the-Refit-Begin.aspxIf anyone has any suggest or comments to offer feel free to chime-in via the comments or email.
-p
s/v Deep Playa | Pearson 424 #152 | http://www.DeepPlaya.comPost generated from Pearson424 Forum using Mail2Forum
Owners no more...
Thanks Dawn and Patrick! -
Patrick,
You are certainly going to have the most hi-tech 424 in the fleet.Your plan indicates putting the GPS at the mizzen masthead. I don't believe this is a good idea. I tried to put my GPS antenna as close to the center of motion as possible. It's good to get it out from under cover, but today's unit are so sensitive (IMO) that is not really necessary. My GPS sits on the stern rail and the sky is partially blocked by the Bimini, still it has no trouble getting strong signals from all available satellites. I sometimes run my Garmin hand held under the Dodger, again with no perceived reduction in performance.
The reason for not putting the antenna high off the deck is because of the motion in a rolling sea could be sensed as actual boat motion. Since I know of no one who has put their GPS on a masthead, I have no evidence that in fact happens. You may have received input from others that this is not a problem. Still if the reason you are putting the GPS at the masthead is to give it a clear view of the sky, it is probably is not worth the effort even if there is no impact on the position sensing.On Tue, Sep 15, 2009 at 3:06 PM, Patrick Walters < ([email][/email])> wrote:
Couple of links:
Panbo reviewed by NMEA network design which was a very rough 1st draft:
http://www.panbo.com/archives/2009/09/sharing_n2kbuilder_files_for_the_common_good.html
I posted my general plan for my big winter push refit
http://www.deepplaya.com/post/Let-the-Refit-Begin.aspx
If anyone has any suggest or comments to offer feel free to chime-in via the comments or email.
-p
s/v Deep Playa | Pearson 424 #152 | http://www.DeepPlaya.com—
Regards,
John Stevenson
http://www.svsarah.comPost generated from Pearson424 Forum using Mail2Forum
-
I’m not sure if I’ll actually do that entire NMEA network, I’m probably going to go with a more analog water tank gauge system, like a Hart or a DIY hart system. I’m just in the “thinking out loud” stages of this operation, but as a geek (I have worked for Microsoft and now F5 Networks) I have to have my toys. 😉
I have heard both NEVER put the GPS up there and that some (Maretron included) are fine up there. My reason for thinking about going that way is to eliminate things in and around the cockpit as much as possible. So much stuff piling up around ther anyway. Another ideas was to put it on the mizzen spreader. If I redo the bimini and stern pulpit on Deep Playa then I could put in a dedicated mount for some of there things. I’m not 100% decided either way, that’s why it’s nice to hear all the input from everyone.
-p
s/v Deep Playa | Pearson 424 #152 | http://www.DeepPlaya.com<.. snip>
Post generated from Pearson424 Forum using Mail2Forum
Owners no more...
Thanks Dawn and Patrick! -
Let me put this out there too… anyone have any thoughts on using a fishfinder verses a normal depth only type transducer? Seems like power draw is the only real negative.
-p
s/v Deep Playa | Pearson 424 #152 | http://www.DeepPlaya.com<.. snip>
Post generated from Pearson424 Forum using Mail2Forum
Owners no more...
Thanks Dawn and Patrick! -
Gee-I have 3 GPS’s-2 antennas on the stern rail-the 3rd is an antenna only connected to my lap top at the nav station with $50 GPS antenna/software.The button antenna lays on the shelf above the table.The lap top has chart plotter software-bootlegged commercial-no cost to me.All GPS’s read about the same.Yeah-talking about networking information-I can look at my depth sounder and knot meter on the cabin/cockpit wall beside the cabin door OR I can look to my right at the helm and read both on my GPS.Maybe I need another GPS on my left.Now-down below-the info is handy being networked to the laptop.
<.. snip>
Post generated from Pearson424 Forum using Mail2Forum
Joe Shimkonis
-
-
If all else fails try looking around beyond your cockpit instruments, at the sea and sky and land (if there be land). Want to know the wind speed? Turn your face to the wind. How fast are you going? Look over the side at the passing water. Weather forecast? Look up. Amazing, the data available out there. Prettier than a screen, too.
Sure, I have a GPS (plus a spare), but am I the only one who still carries a sextant (plus a spare)? Last time I checked, Murphy just loves electronics.
Tor
~~~~~~~~~~~~~~~~~~~~~~~
Silver Heels, P-424 #17
http://www.SilverHeels.us
~~~~~~~~~~~~~~~~~~Quote:
Original Message
<.. snip>Post generated from Pearson424 Forum using Mail2Forum
-
Hey, I've been carrying a sextant and spare for years. Someday, perhaps soon, I'll learn how to use them. I even have a spare HO249. And a book 'Celestial Navigation for Dummies' that I can read in an emergency.
Like calculus, I've learned and forgotten it several times over the last few decades. It's not like riding a bike. You really do forget….
Bob
On Wed, Sep 16, 2009 at 8:00 AM, Silver Heels < ([email][/email])> wrote:
Quote:If all else fails try looking around beyond your cockpit instruments, at the sea and sky and land (if there be land). Want to know the wind speed? Turn your face to the wind. How fast are you going? Look over the side at the passing water. Weather forecast? Look up. Amazing, the data available out there. Prettier than a screen, too.
Sure, I have a GPS (plus a spare), but am I the only one who still carries a sextant (plus a spare)? Last time I checked, Murphy just loves electronics.
Tor
~~~~~~~~~~~~~~~~~~~~~~~
Silver Heels, P-424 #17
http://www.SilverHeels.us
~~~~~~~~~~~~~~~~~~Quote:
Original Message
<.. snip>Post generated from Pearson424 Forum using Mail2Forum
-
How true! I’m having to re-learn the steps now, I’m embarrassed to say. I navigated by sextant (and DR and RDF)) for years back in the day when that’s all there was offshore, on a score of long passages. Now it’s all a bit foggy from non-use. Just now ordering a nautical almanac for the sight reduction tables and have promised myself regular sights during my upcoming trip. There always was something especially gratifying about making a landfall after 10 days of fixes by the stars & planets. It still seems to me a part of the romance of sailing that drew me to it in the first place, just as is data-gathering from the elements around me rather than from a screen. I mean, if I’d wanted to watch all this on TV I could’ve just stayed home and kept warm and dry.
I know I’m the oddball today. Old fashioned ain’t hardly in it. But without GPS imagine how beautifully uncluttered the anchorages would be in the far-off islands!
Tor
~~~~~~~~~~~~~~~~~~~~~~~
Silver Heels, P-424 #17
http://www.SilverHeels.us
~~~~~~~~~~~~~~~~~~Quote:
Original Message
<.. snip>Post generated from Pearson424 Forum using Mail2Forum
-
So true, so true. Where is your big trip to? I sure hope to meet! So, the anchorages would be empty, but the reefs littered with foundered yachts! Hmm, now that I think about it… I'm also a traditionalist although celestial navigation in the Northeast is not a very good way to survive. You can be off by more than the distance it takes to run aground.
Bob
On Wed, Sep 16, 2009 at 8:30 AM, Silver Heels < ([email][/email])> wrote:
Quote:How true! I'm having to re-learn the steps now, I'm embarrassed to say. I navigated by sextant (and DR and RDF)) for years back in the day when that's all there was offshore, on a score of long passages. Now it's all a bit foggy from non-use. Just now ordering a nautical almanac for the sight reduction tables and have promised myself regular sights during my upcoming trip. There always was something especially gratifying about making a landfall after 10 days of fixes by the stars & planets. It still seems to me a part of the romance of sailing that drew me to it in the first place, just as is data-gathering from the elements around me rather than from a screen. I mean, if I'd wanted to watch all this on TV I could've just stayed home and kept warm and dry.
I know I'm the oddball today. Old fashioned ain't hardly in it. But without GPS imagine how beautifully uncluttered the anchorages would be in the far-off islands!
Tor
~~~~~~~~~~~~~~~~~~~~~~~
Silver Heels, P-424 #17
http://www.SilverHeels.us
~~~~~~~~~~~~~~~~~~Quote:
Original Message
<.. snip>Post generated from Pearson424 Forum using Mail2Forum
-
I keep trying to go old-school myself. Before both of my trans-atlantic sails I got the sextant out calibrated it and practiced a few times with an artificial horizon. I even wrote an Excel application to reduce the sights without a Nautical Almanac or reduction tables. Yet I never took one sight on either trip. Each day there was always enough things to do (fixing things, cooking, radio nets, cleaning, sleeping, etc.) such that when it came to navigation I just wouldn't give up the time to use the sextant to acquire a position that would never be as accurate as the one I was staring at on the GPS display. Maybe next time.
On Wed, Sep 16, 2009 at 8:39 AM, Robert Fine < ([email][/email])> wrote:
Quote:So true, so true. Where is your big trip to? I sure hope to meet! So, the anchorages would be empty, but the reefs littered with foundered yachts! Hmm, now that I think about it… I'm also a traditionalist although celestial navigation in the Northeast is not a very good way to survive. You can be off by more than the distance it takes to run aground.Bob
On Wed, Sep 16, 2009 at 8:30 AM, Silver Heels < ([email][/email])> wrote:
Quote:How true! I'm having to re-learn the steps now, I'm embarrassed to say. I navigated by sextant (and DR and RDF)) for years back in the day when that's all there was offshore, on a score of long passages. Now it's all a bit foggy from non-use. Just now ordering a nautical almanac for the sight reduction tables and have promised myself regular sights during my upcoming trip. There always was something especially gratifying about making a landfall after 10 days of fixes by the stars & planets. It still seems to me a part of the romance of sailing that drew me to it in the first place, just as is data-gathering from the elements around me rather than from a screen. I mean, if I'd wanted to watch all this on TV I could've just stayed home and kept warm and dry.
I know I'm the oddball today. Old fashioned ain't hardly in it. But without GPS imagine how beautifully uncluttered the anchorages would be in the far-off islands!
Tor
~~~~~~~~~~~~~~~~~~~~~~~
Silver Heels, P-424 #17
http://www.SilverHeels.us
~~~~~~~~~~~~~~~~~~Quote:
Original Message
<.. snip>Post generated from Pearson424 Forum using Mail2Forum
-
John,
I think that’s a common ailment. I’ve done the same thing. But THIS time…
Tor
~~~~~~~~~~~~~~~~~~~~~~~
Silver Heels, P-424 #17
http://www.SilverHeels.us
~~~~~~~~~~~~~~~~~~Quote:
Original Message
<.. snip>Post generated from Pearson424 Forum using Mail2Forum
-
Hey, I know GPS is the way to go now that it’s here (although mariners got around the Northeast for a long time without it, relying on other skills). I just lament the extreme electronics that collectively seem to sever a fragile bond between a sailor and his/her environment. Of course, for someone like Patrick, a self-proclaimed geek who loves the stuff, it enhances the fun of boating and I’m all for it. That is, after all, the whole point of doing this – to have fun. I just tend to enjoy my sailing a bit more au naturale. Different strokes.
My upcoming trip is Beaufort, NC to Martinique, by way of Bermuda if the wind favors it, with the initial West Indies landfall in St. Maarten. I’m looking at a late start, though – mid/late November – so if you’re heading down the East Coast we might get together for a few beers in Beaufort. However, I’ll be away October 6-25.
Tor
~~~~~~~~~~~~~~~~~~~~~~~
Silver Heels, P-424 #17
http://www.SilverHeels.us
~~~~~~~~~~~~~~~~~~Quote:
Original Message
<.. snip>Post generated from Pearson424 Forum using Mail2Forum
-
On the general subject of geek-sailing (I'm guilty – 5 computers on board), Evans Starzinger had an interesting comment in a recent SSCA Forum thread on a related subject (Cruiser Self-Reliance). He observed that when they made their first circumnavigation back in the 80s they got their weather forecasts before departure and then did as Tor suggested, made their own forecasts by looking at the sky and sea. He noted that he really enjoyed the days they were on a comfortable reach and wasn't thinking about what might happen in a few days. They just took the weather as it came. Now they cruise with the ability to download weather data continuously and he doesn't relax as much on those reaching days. He's always looking at or thinkng about the weather data for the next few days. Of course they now sail mostly in the high latitudes (southern oceans) so maybe it is well that he doesn't relax that much.
On Wed, Sep 16, 2009 at 9:11 AM, Silver Heels < ([email][/email])> wrote:
Quote:Hey, I know GPS is the way to go now that it's here (although mariners got around the Northeast for a long time without it, relying on other skills). I just lament the extreme electronics that collectively seem to sever a fragile bond between a sailor and his/her environment. Of course, for someone like Patrick, a self-proclaimed geek who loves the stuff, it enhances the fun of boating and I'm all for it. That is, after all, the whole point of doing this – to have fun. I just tend to enjoy my sailing a bit more au naturale. Different strokes.
My upcoming trip is Beaufort, NC to Martinique, by way of Bermuda if the wind favors it, with the initial West Indies landfall in St. Maarten. I'm looking at a late start, though – mid/late November – so if you're heading down the East Coast we might get together for a few beers in Beaufort. However, I'll be away October 6-25.
Tor
~~~~~~~~~~~~~~~~~~~~~~~
Silver Heels, P-424 #17
http://www.SilverHeels.us
~~~~~~~~~~~~~~~~~~Quote:
Original Message
<.. snip>Post generated from Pearson424 Forum using Mail2Forum
-
Yes, simplicity is the key to fewer breakdowns. The first person to solo from Japan to San Francisco had only a compass for navigation and used the contrails of jets to guide he and his small, plywood boat across the Pacific. With all of that said, I do love my GPS on land and sea.
Smooth Sailing,
Bill
SV Running Tab<.. snip>
Post generated from Pearson424 Forum using Mail2Forum
-
I also have a sextant… That’s geeky too. 😉
-p
Sent from my phoneOn Sep 16, 2009, at 7:24 AM, Bill Emberley < ([email][/email])> wrote:
Quote:Yes, simplicity is the key to fewer breakdowns. The first person to solo from Japan to San Francisco had only a compass for navigation and used the contrails of jets to guide he and his small, plywood boat across the Pacific. With all of that said, I do love my GPS on land and sea.
Smooth Sailing,
Bill
SV Running Tab<.. snip>
Post generated from Pearson424 Forum using Mail2Forum
Owners no more...
Thanks Dawn and Patrick! -
Surely, there’s no right or wrong here. Even whether or not relaxing on a passage is better than not is a subjective call. I’m afraid I was just injecting my own imbalance on the subject in response to others’ imbalance. I don’t consider myself a “traditionalist” by any stretch (even though I sail an almost-antique ketch!). I use lots of modern stuff to get around, but generally I do favor simplicity and attunement over technology and distraction. Maybe it comes from working too many boat shows. Or maybe brain overload comes more easily these days.
Tor
~~~~~~~~~~~~~~~~~~~~~~~
Silver Heels, P-424 #17
http://www.SilverHeels.us
~~~~~~~~~~~~~~~~~~Quote:
Original Message
<.. snip>Post generated from Pearson424 Forum using Mail2Forum
-
-
Hey, Tor,
We'll meet in Beaufort I think. That would be AWESOME! Although I have Sirius weather, I prefer to look at the sky. It's nice to know when you're sailing into a hurricane, but above Cape Hatteras, that's not as common as you'd think.
All methods are great – and all necessary. There's nothing wrong with backup and confirmation. I still look at (and buy) paper charts. I still take sightings when I'm confused. It's all good as long as you are comfortable with your skills. The the variance of skills shows that you can get from here to there with almost no knowledge at all. Or the lucky ones can.
Bob
—
Bob Fine
s/v Pelican
Hull #8Post generated from Pearson424 Forum using Mail2Forum
-
HA! I actually have one on Silver Heels. It came with the boat and it works perfectly, so I’ve left it in place as (as you say) yet another a back up. I don’t think Loran works offshore or in the West Indies, does it?
Tor
~~~~~~~~~~~~~~~~~~~~~~~
Silver Heels, P-424 #17
http://www.SilverHeels.us
~~~~~~~~~~~~~~~~~~Quote:
Original Message
<.. snip>Post generated from Pearson424 Forum using Mail2Forum
-
See you when you get here, then! (Or at the Annapolis show.)
Quote:
Original Message
<.. snip>Post generated from Pearson424 Forum using Mail2Forum
-
Hi Tor,
If you mean, will it turn on in the West Indies, yes. Will it tell you where you are? Probably not. But here's the thing – Loran is being extended with Loran “E” that in conjunction with GPS will not only tell you where you are within a skeenteenth of an inch, but will tell you what direction you are heading when stopped (as in a slip). It's a terrific idea and provides backup for when all of the GPS satellites fall out of the sky.
Bob
On Wed, Sep 16, 2009 at 12:42 PM, Silver Heels < ([email][/email])> wrote:
Quote:HA! I actually have one on Silver Heels. It came with the boat and it works perfectly, so I've left it in place as (as you say) yet another a back up. I don't think Loran works offshore or in the West Indies, does it?Tor
~~~~~~~~~~~~~~~~~~~~~~~
Silver Heels, P-424 #17
http://www.SilverHeels.us
~~~~~~~~~~~~~~~~~~Quote:
Original Message
<.. snip>Post generated from Pearson424 Forum using Mail2Forum
-
I was pretty skeptical of the eLoran project when it was first announced a number of years ago. It didn't seem to have an agency with deep pockets (e.g., DOD) that would own and fund it. At the time I think only the USCG was pushing hard for it. They were in the Transportation Dept then, not one of the agencies whose budget was sacred. I wasn't going to invest in something that a bureaucrat in OMB could wipe out at any time. Now I understand Homeland Security (probably the USCG is still pushing) has made it a priority, so I guess it will have some funding continuity. I also noticed recently that Europe has funded the implementation of eLoran, so its near-term future appears secure. Just what I need another geek toy on board.
I fried my Loran about 8 years ago and never replaced it.
I didn't think there was very much, if any, Loran-C coverage in the Caribbean, but since I don't have a receiver I haven't been following changes in the system.
I did navigate with Loran-C on a friend's boat doing a couple of Annapolis-Bermuda races back in the 80s. We could hold a Loran position all the way to Bermuda. Then we turned the unit off until departure. On the sails back to the states we never got a position lock until within 200 nm of the Chesapeake. With good software the Loran would provide a fairly accurate position even when it was receiving only chains that intersect at very acute angles. In order to acquire a fix it appeared to need solid signals from at least two orthogonal chains. Still we thought it was magic. It was really neat to have the Loran show that we had caught the bottom of a cold water eddy and let it slingshot us toward Bermuda.
On the trips back I did get a chance to actually use my sextant in anger. The sextant and DR got us pretty to close to where the Loran finally locked in.John
On Wed, Sep 16, 2009 at 12:51 PM, Robert Fine < ([email][/email])> wrote:
Quote:Hi Tor,If you mean, will it turn on in the West Indies, yes. Will it tell you where you are? Probably not. But here's the thing – Loran is being extended with Loran “E” that in conjunction with GPS will not only tell you where you are within a skeenteenth of an inch, but will tell you what direction you are heading when stopped (as in a slip). It's a terrific idea and provides backup for when all of the GPS satellites fall out of the sky.
Bob
On Wed, Sep 16, 2009 at 12:42 PM, Silver Heels < ([email][/email])> wrote:
Quote:HA! I actually have one on Silver Heels. It came with the boat and it works perfectly, so I've left it in place as (as you say) yet another a back up. I don't think Loran works offshore or in the West Indies, does it?Tor
~~~~~~~~~~~~~~~~~~~~~~~
Silver Heels, P-424 #17
http://www.SilverHeels.us
~~~~~~~~~~~~~~~~~~Quote:
Original Message
<.. snip>Post generated from Pearson424 Forum using Mail2Forum
-
Bob,
So will my old Loran C start automatically start picking up this E signal, or does Loran E require new hardware? And will E still be limited to continental coastal areas as are the older Lorans? (BTW, I can usually figure out which way my boat is pointed in a slip without a whole new electronic technology to assist. Am I missing some exciting point here?)
Tor
~~~~~~~~~~~~~~~~~~~~~~~
Silver Heels, P-424 #17
http://www.SilverHeels.us
~~~~~~~~~~~~~~~~~~Quote:
Original Message
<.. snip>Post generated from Pearson424 Forum using Mail2Forum
-
Hi Tor,
Your current Loran C will work as it currently does. Loran E requires new equipment to manage the enhanced signal. The E will also, I am given to understand, be useful out to a maximum of 200 miles. Because it's a digital technology it suffers degraded signal strength better than analog. Older Lorans will behave exactly as before.
Although the slip example was trivial, in a situation where you are leebowing the tide, you will see that your heading and course differ. A chartplotter will do that, of course, but it never hurts to have a backup system. It can keep you from the mistake many people make of heading for a point in a cross current so that they take the longest possible course rather than the shortest. I see that happening in Long Island Sound all the time.
It's just another compass, essentially. But a really accurate one.
It also will supplant the WAAS system introduced to make the GPS degraded signal more accurate. But don't get me going on that one. Fortunately, the government turned off the degrading and now the WAAS is essentially useless. But it was expensive, so all is well.
Loran is a pretty good system, and Loran E really is an enhancement. It also means that Loran will be around for at least as long as we're alive.
Sometimes, though, when staggering back to the boat, you do need confirmation of direction… Fortunately, I have a compass in my watch.
Bob
On Wed, Sep 16, 2009 at 9:38 PM, Silver Heels < ([email][/email])> wrote:
Quote:Bob,
So will my old Loran C start automatically start picking up this E signal, or does Loran E require new hardware? And will E still be limited to continental coastal areas as are the older Lorans? (BTW, I can usually figure out which way my boat is pointed in a slip without a whole new electronic technology to assist. Am I missing some exciting point here?)
Tor
~~~~~~~~~~~~~~~~~~~~~~~
Silver Heels, P-424 #17
http://www.SilverHeels.us
~~~~~~~~~~~~~~~~~~Quote:
Original Message
<.. snip>Post generated from Pearson424 Forum using Mail2Forum
-
Now, “leebowing the tide” is a term I’ve never heard before. Where’d you learn it? I understand it perfectly, but have always called it crabbing. In the past when I knew the current was there, as with the Gulf Stream between Miami and Bimini, I’d plot a current vector before leaving. No doubt the true route wound up a bit wobbly since the current isn’t consistent all the way across, but it always got me there. Now with GPS telling me my COG, I can instantly see if it’s different than my (corrected) compass course and steer accordingly. I guess I’m just going to be stubborn about avoiding more gadgets to do things I can already do with what I’ve got, but clearly the Loran E is an improvement over the old C and could be useful if you’re within its range. Thanks for updating me.
Tor
~~~~~~~~~~~~~~~~~~~~~~~
Silver Heels, P-424 #17
http://www.SilverHeels.us
~~~~~~~~~~~~~~~~~~Quote:
Original Message
<.. snip>Post generated from Pearson424 Forum using Mail2Forum
-
Lee bow the tide is one of the first expressions I learned after bow, stern, port and starboard. Crabbing is the attitude of the boat rather than the direction. It's the local phenomena rather that the strategy of sailing a course that takes the current into account. It turns out that it means, literally, to have the current on the leeward bow, giving you a push towards your destination. But I think it's been generalized to mean heading above or below your course to make up for the current. Crossing the Gulf Stream, I suspect, you'd usually have the current from the southish and the wind from the same-ish direction. To truly lee bow, the wind would have to be from the NW-ish.
I'm hoping for that sort of crossing. But I'll take any good weather…
Bob
On Thu, Sep 17, 2009 at 8:55 AM, Silver Heels < ([email][/email])> wrote:
Quote:Now, “leebowing the tide” is a term I've never heard before. Where'd you learn it? I understand it perfectly, but have always called it crabbing. In the past when I knew the current was there, as with the Gulf Stream between Miami and Bimini, I'd plot a current vector before leaving. No doubt the true route wound up a bit wobbly since the current isn't consistent all the way across, but it always got me there. Now with GPS telling me my COG, I can instantly see if it's different than my (corrected) compass course and steer accordingly. I guess I'm just going to be stubborn about avoiding more gadgets to do things I can already do with what I've got, but clearly the Loran E is an improvement over the old C and could be useful if you're within its range. Thanks for updating me.
Tor
~~~~~~~~~~~~~~~~~~~~~~~
Silver Heels, P-424 #17
http://www.SilverHeels.us
~~~~~~~~~~~~~~~~~~Quote:
Original Message
<.. snip>Post generated from Pearson424 Forum using Mail2Forum
-
Bob,
Crossing the Gulf Stream at or around Miami is no big deal, though it is often vilified. It’s only if you get caught out there in a norther, even a moderate norther, that it can get rough. In a strong norther the short, steep seas set up by the opposing current become seriously scary and dangerous. So, just check the forecast before you go. Any wind that isn’t from the north is OK. Most often it’s from the southeast, which is dead on the nose once you’ve adjusted your course for the current, so lots of boats just motor across.
Tor
~~~~~~~~~~~~~~~~~~~~~~~
Silver Heels, P-424 #17
http://www.SilverHeels.us
~~~~~~~~~~~~~~~~~~Quote:
Original Message
<.. snip>Post generated from Pearson424 Forum using Mail2Forum
-
Bob,
I think in your comment on WAAS you confused it with Differential GPS (DGPS). WAAS is (I believe) still a major part of the FAA navigation plans and really wasn't that expensive to implement. They just bought space on other people's satellites. DGPS uses a large number of land stations that broadcast corrections to the GPS data, but you need a radio receiver integrated with a GPS to get the corrections. DGPS is a USCG system, WAAS belongs to the FAA. The WAAS system is still being actively enhanced, but I don't think we'll see any of the benefits (I don't think we really need an instrument to tell us our altitude) as it is being developed for the aviation industry and an automated landing and takeoff system.
With regard to eLoran, I think I read that it will be implemented using the same DGPS land stations. That's little bit a concern as my Navtex receiver is constantly clogged with messages announcing such and such DGPS station is off the air. If the USCG can't keep the DGPS transmitters working, what does that tell us about eLoran?On Thu, Sep 17, 2009 at 9:23 AM, Robert Fine < ([email][/email])> wrote:
Quote:Lee bow the tide is one of the first expressions I learned after bow, stern, port and starboard. Crabbing is the attitude of the boat rather than the direction. It's the local phenomena rather that the strategy of sailing a course that takes the current into account. It turns out that it means, literally, to have the current on the leeward bow, giving you a push towards your destination. But I think it's been generalized to mean heading above or below your course to make up for the current. Crossing the Gulf Stream, I suspect, you'd usually have the current from the southish and the wind from the same-ish direction. To truly lee bow, the wind would have to be from the NW-ish.I'm hoping for that sort of crossing. But I'll take any good weather…
Bob
On Thu, Sep 17, 2009 at 8:55 AM, Silver Heels < ([email][/email])> wrote:
Quote:Now, “leebowing the tide” is a term I've never heard before. Where'd you learn it? I understand it perfectly, but have always called it crabbing. In the past when I knew the current was there, as with the Gulf Stream between Miami and Bimini, I'd plot a current vector before leaving. No doubt the true route wound up a bit wobbly since the current isn't consistent all the way across, but it always got me there. Now with GPS telling me my COG, I can instantly see if it's different than my (corrected) compass course and steer accordingly. I guess I'm just going to be stubborn about avoiding more gadgets to do things I can already do with what I've got, but clearly the Loran E is an improvement over the old C and could be useful if you're within its range. Thanks for updating me.
Tor
~~~~~~~~~~~~~~~~~~~~~~~
Silver Heels, P-424 #17
http://www.SilverHeels.us
~~~~~~~~~~~~~~~~~~Quote:
Original Message
<.. snip>Post generated from Pearson424 Forum using Mail2Forum
-
You're absolutely correct, John – I had a niggling feeling it wasn't WAAS, but I couldn't for the life of me remember what it was. Thanks! But eLoran is supposed to be the cat's meow, the bee's knees. It's supposed to make navigation so dead, stupid simple and so accurate that there will never be another grounding, that the winds will always be fair, and that chocolate will no longer be fattening. Wait, that's already true. It's supposed to be fully implemented the day before yesterday, or the day after tomorrow.
There are neat features expected, though.
Bob
On Thu, Sep 17, 2009 at 10:03 AM, John Stevenson < ([email][/email])> wrote:
Quote:Bob,
I think in your comment on WAAS you confused it with Differential GPS (DGPS). WAAS is (I believe) still a major part of the FAA navigation plans and really wasn't that expensive to implement. They just bought space on other people's satellites. DGPS uses a large number of land stations that broadcast corrections to the GPS data, but you need a radio receiver integrated with a GPS to get the corrections. DGPS is a USCG system, WAAS belongs to the FAA. The WAAS system is still being actively enhanced, but I don't think we'll see any of the benefits (I don't think we really need an instrument to tell us our altitude) as it is being developed for the aviation industry and an automated landing and takeoff system.
With regard to eLoran, I think I read that it will be implemented using the same DGPS land stations. That's little bit a concern as my Navtex receiver is constantly clogged with messages announcing such and such DGPS station is off the air. If the USCG can't keep the DGPS transmitters working, what does that tell us about eLoran?On Thu, Sep 17, 2009 at 9:23 AM, Robert Fine < ([email][/email])> wrote:
Quote:Lee bow the tide is one of the first expressions I learned after bow, stern, port and starboard. Crabbing is the attitude of the boat rather than the direction. It's the local phenomena rather that the strategy of sailing a course that takes the current into account. It turns out that it means, literally, to have the current on the leeward bow, giving you a push towards your destination. But I think it's been generalized to mean heading above or below your course to make up for the current. Crossing the Gulf Stream, I suspect, you'd usually have the current from the southish and the wind from the same-ish direction. To truly lee bow, the wind would have to be from the NW-ish.I'm hoping for that sort of crossing. But I'll take any good weather…
Bob
On Thu, Sep 17, 2009 at 8:55 AM, Silver Heels < ([email][/email])> wrote:
Quote:Now, “leebowing the tide” is a term I've never heard before. Where'd you learn it? I understand it perfectly, but have always called it crabbing. In the past when I knew the current was there, as with the Gulf Stream between Miami and Bimini, I'd plot a current vector before leaving. No doubt the true route wound up a bit wobbly since the current isn't consistent all the way across, but it always got me there. Now with GPS telling me my COG, I can instantly see if it's different than my (corrected) compass course and steer accordingly. I guess I'm just going to be stubborn about avoiding more gadgets to do things I can already do with what I've got, but clearly the Loran E is an improvement over the old C and could be useful if you're within its range. Thanks for updating me.
Tor
~~~~~~~~~~~~~~~~~~~~~~~
Silver Heels, P-424 #17
http://www.SilverHeels.us
~~~~~~~~~~~~~~~~~~Quote:
Original Message
<.. snip>Post generated from Pearson424 Forum using Mail2Forum
-
Patrick,
I have a Perkins, not a Westerbeke, but I would like a way to have my oil pressure, oil temperature, and water temperature displayed on my C-120.Lee
<.. snip>
Post generated from Pearson424 Forum using Mail2Forum
-
The C-120 understands the following protocols:
NMEA 0183
SeaTalk
SeaTalk2/NMEA2000You just need to find a device that connects to your engine’s analog wiring harness and then re-transmit the data to the C120.
The Maretron andor the Cruz Pro links we sent our yesterday would all probably work, but you should talk to someone who has done it or someone who installs these and can tell you for sure.-p
s/v Deep Playa | Pearson 424 #152 | http://www.DeepPlaya.com<.. snip>
Post generated from Pearson424 Forum using Mail2Forum
Owners no more...
Thanks Dawn and Patrick!
-
- You must be logged in to reply to this topic.