SailNet Community - View Single Post - Magnetic Variance
View Single Post
Old 02-06-2014
Dean101's Avatar
Dean101 Dean101 is offline
Life is a wild ride!
Join Date: Apr 2011
Location: Kentucky
Posts: 409
Thanks: 6
Thanked 3 Times in 3 Posts
Rep Power: 4
Dean101 is on a distinguished road
Re: Magnetic Variance

Originally Posted by sck5 View Post
Rarely do I ever hear anyone give a position in anything but lat/long. In Chesapeake Bay people will often say things like "off Lookout Pt" or "a mile east of red 34" but never have i heard anyone give an exact bearing in either true or magnetic. It might be important in theory and yes, I learned to do it like everyone else but it just doesnt come up very often in real life unless you are still firmly in a paper chart only universe. Most of us arent any more.

Sure, it is a good thing to be ready for disaster to strike but do you REALLY keep a dead reckoning going on a long passage when you can simply read off the lat/long whenever you like and write it in the log? I think a lot of folks are piously repeating what their lessons told them was "proper" but which is a lot of work for a less accurate result.

It is a good idea to remember WHY our teachers told us to do all these calculations. It was to know our position with as much accuracy as possible. Again, I can do it, but why would I waste time with that when I have 4 redundant GPS's which will tell me my position with 10ft. accuracy? It is especially pointless when I am hundreds of miles from land and seem to only rarely have a wind fair enough to head directly toward my goal.
I see the point you are trying to make but it is still a good thing to know. I happen to like paper charts. If "most" others don't, well, that's all well and good but has absolutely nothing to do with me or my own preferences. I also like the accuracy of GPS. I think they both have their place. I also think it a wise precaution to keep a track on a chart and knowing how to do these conversions is necessary in order to do that. You said you can do these calculations. Well, I'm just learning. As to the "why" I want to learn them, I explained that in my previous posts. Anything will be pointless if you see no value in it.
Reply With Quote Share with Facebook