NavList:

   

Reply

I agree with the calculation of 34.8 miles as the distance between the two 
given positions. What's the problem?

George.

contact George Huxtable, at  george@hux.me.uk
or at +44 1865 820222 (from UK, 01865 820222)
or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.
----- Original Message ----- 
From: "Irv Haworth" 
To: "Navlist" 
Sent: Sunday, November 08, 2009 11:59 PM
Subject: [NavList 10508] SOA vs Positions



Does

The plot thicken ?

Dist.

from

11AM/12.00

Is 34.8NM

Which

=34.8

Seems to indicate positions are in error ?









Notes

date/time

lat

lon

naut. miles run

SOA

wind from

knots

barom.

wave height

air temp

dew point

water temp


2009-Nov-08 16:00

S 44�24'

E 167�00'

43

10.7

220

27

1016.3

1.5

12.0

10.2

13.0


2009-Nov-08 12:00

S 44�24'

E 166�00'

35

34.8

220

15

1019.3

0.5

12.0



2009-Nov-08 11:00

S 44�18'

E 165�12'

290

15.2

250

21

1022.2

13.0

12.7

13.0



Please excuse my lead-in�it now appears the algorithm used must
automatically calc. SOA based on Rhumb dist. In this case dist is 34.8 (my
RL calc) and not 35 NM as NM  Run.

What I am trying to determine : are data generated/reported automatically
from a GPS  without any inputs from navigator, as well as SOA issue.

( I have been following the track of a large cruise ship across S. Pacific
and now wondering what or who does what�with confidence. Reminds me of a
quip in poor taste �if you drive then drink and face the traffic with
confidence�).







--~--~---------~--~----~------------~-------~--~----~
NavList message boards: www.fer3.com/arc
Or post by email to: NavList@fer3.com
To , email NavList+@fer3.com
-~----------~----~----~----~------~----~------~--~---

   

Reply