|
|
|
|
|||||
|
||||||
Subject: Re: Mercator vs. Great Circle Charts
From: David Weilacher (daveweilacher@XXX.XXX)
Date: Wed Aug 29 2001 - 09:12:47 EDT
So here are my answer to the test. Please tell me where I've screwed up.
Re: 1. Can true direction be determined in the same manner for all locations on a
Re: Mercator chart? How about on a great circle chart?
Re:
Yes and Yes. (Of course the 1st yes is supposed to be no on the test)
Re: 2. How is the compass rose used on each of these charts?
Re:
Clueless.
Re: 3. If I were to draw a straight line between two points (say Tokyo and Cabo
Re: San Lucas) on both a Mercator chart and a great circle chart, would either
Re: straight line represent a great circle?
Re:
Yes.
Re: 4. Given the straight line drawn between Tokyo and Cabo San Lucas (see
Re: above), which chart, the Mercator or the great circle, would give me the
Re: shortest route between these two points?
Re:
Great circle.
Re: 5. Would sailing a great circle course always be the best way to travel
Re: across the ocean, or would ships have to take into consideration unfavorable
Re: winds, currents, or storms that might cause a delay?
Re:
Not always for resons suggested plus land masses in the way. Maybe even ice.
Re: 6. Do most large ships today use computer assistance to help them choose the
Re: best course across the ocean?
Re:
Yes. (In a manner of speaking)
---------------------------
Did I pass?
--Dave Weilacher .USCG lic. 889968 .ASA certifed sailing instructor 990800 .AS400 RPG programmer
_______________________________________________ Get your free email from http://webmail.earthlink.net
|