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Go Back   SailNet Community > Sailnet Polls > Sailnet.com Polls > Deviation card /table?
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Thread: Deviation card /table? Reply to Thread
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Topic Review (Newest First)
02-22-2012 11:51 PM
Capt Len The compass formation by GPS is calculated internally from information like positions over time.It tells you where you've been.and you assume it's pointing the way you're going. Accidental in irons, gybe, MOB or maneuvering in fog and rocks and dark with current will show the short comings of not having a ""trusted ""compass .Before GPS I'd set my course by wave action and guesstimate my way across the Beaufort because compass was useless in rough weather (too far north) Understanding dev ,var, dec and error can save your butt.
02-20-2012 07:58 PM
jackdale
Quote:
Originally Posted by AdamLein View Post
I think his point was that he didn't do any navigation by compass, since he could easily do all of his navigation by landmarks.
Very possible in the PNW.
02-20-2012 07:47 PM
AdamLein
Quote:
Originally Posted by jackdale View Post
Deviation has nothing to with where you sail.
I think his point was that he didn't do any navigation by compass, since he could easily do all of his navigation by landmarks.
02-20-2012 07:07 PM
jackdale
Quote:
Originally Posted by wolfenzee View Post
Until recently my sailing was local and I recognized enough so any deviation was insignificant( the compass that came with the boat wasn't so hot either. .But have recently purchased a Richie Globe master, bronze binnacle and am having a brass compass guard made, all will the intention of serious ocean trips...once installed I will have it adjusted properly
Deviation has nothing to with where you sail.

Deviants may have to do with whom you sail.
02-20-2012 05:59 PM
wolfenzee Until recently my sailing was local and I recognized enough so any deviation was insignificant( the compass that came with the boat wasn't so hot either. .But have recently purchased a Richie Globe master, bronze binnacle and am having a brass compass guard made, all will the intention of serious ocean trips...once installed I will have it adjusted properly
08-25-2011 02:48 PM
Henry Irla
obsolescense

What's the use of it (dev. table) on the days of the GPS?
04-28-2009 10:45 PM
jackdale
Quote:
Originally Posted by Maine Sail View Post
Yes it sometimes does but it is usually due to changes I've made in the cockpit. Also it is important to calibrate your compass to how you usually sail. For me I always have my plotter, depth and AP on. I actually have two deviations cards, an electronics on card and an electronics off card..
Interesting ... How different are they? Could you scan and post them?

Jack
04-27-2009 10:15 PM
pukeslip I go wherever the wind takes me. Part of the joy in sailing is that I can leave time on shore, along with the rest of life's troubles. I always find my way back home, with or without an accurate compass.
04-25-2009 01:49 PM
sahara I keep my boat at a well known boatyard in SW Harbor, Maine. Last year I had new electronics installed at the helm, and when I got on board for the first time in the spring, there was a new deviation card sitting on the nav station. I never have to ask them for this, they just do as part of the routine of properly preparing a boat for cruising. IMO, their reputation for excellence is well deserved.
04-13-2009 04:08 PM
CaptainForce We used to cruise over to the Bahamas before the time of GPS with dead rekoning and a RDF. I had made a deviation card, but stopped using it and instead I would take a pelorus to the bow and call out a mark for the helmsman to note the heading on the binnacle compass. I know there could be some cause for deviation at the bow for some vessels, but I had negligible effects on my boat and this plan always gave us a course that was successful. 'take care and joy, Aythya crew
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