On Fri, 04 Jul 2008 14:52:22 -0500, Vic Smith
wrote:

On Fri, 04 Jul 2008 19:16:46 GMT, Short Wave Sportfishing
wrote:

On Fri, 04 Jul 2008 18:34:18 GMT, (Richard
Casady) wrote:

On Fri, 04 Jul 2008 13:49:02 GMT, Short Wave Sportfishing
wrote:

GPS has nothing to do with fuel usage.

No, it's just a tool used for management of fuel use.

I've given up trying to understand why. :)

Here's what I'm thinking.
You're traveling from A to B at what rpm and pitot speedo say is 20
knots.
The current is going from B to A, at five knots.
You don't have GPS, and are on a compass heading to Grand Cayman.
You didn't know about that current.
The engines start coughing as the fuel runs out.
It's hot as Hades, with not a cloud in sight.
For the first time you notice fins cutting through the water.
You look at the sky again. Damn, what are those vultures doing flying
so far from land?
You try to raise Wayne on the VHF, so he can get a fix on you with his
radar.
No luck. Wayne is taking photos of salt water pigs.
What do you do?
What do you do?
Oh, there's no conductor aboard to ask.

Um....

Ok.... :)