|
|
|
|
|||||
|
||||||
From: Courtney Thomas (no email)
Date: Sat Sep 27 2003 - 17:31:42 EDT
John,
Any information on where to get a taffrail log for a reasonable cost ?
Thank you.
John Titterton wrote:
> Chris,
>
> Your list seems OK with one exception. There is no log? The reliance on
> GPS alone is not such a good idea and to work out a DR, you need a log.
> I have experienced a loss of GPS signal for over an hour before whilst
> crossing from southern Africa into the Caribbean. The problem is that
> you do not know if it is going to be permanent or only a few minutes and
> if you do not have a log, you can only "guestimate" the distance sailed
> over a given time. Being able to calculate your DR using your log,
> direction and time, factoring in leeway and drift, may mean the
> difference of finishing a trip safely or being another statistic of
> those missing at sea. Navigation works better if you have the old
> methods at hand in case the modern approach gives up the ghost. Also,
> invest in a plastic sextant and take a course that can teach you at
> least to be able to calculate your noon position. You will enjoy your
> trip a hell of a lot more with the knowledge that if the electronics
> gave up on you, you could still navigate via other more traditional
> means.
>
> John Titterton
> Cape Town
>
>
>
>
>
>
> To unsubscribe from this group, send an email to:
>
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
------------------------ Yahoo! Groups Sponsor ---------------------~-->
Buy Ink Cartridges or Refill Kits for your HP, Epson, Canon or Lexmark
Printer at MyInks.com. Free s/h on orders $50 or more to the US & Canada.
http://www.c1tracking.com/l.asp?cid=5511
http://us.click.yahoo.com/mOAaAA/3exGAA/qnsNAA/A1TolB/TM
---------------------------------------------------------------------~->
To unsubscribe from this group, send an email to:
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
|