Peter Duniho wrote:

How so? Dead-reckoning is not nearly as reliable as pilotage....

To send us off on another tangent, and one that I haven't seen mentioned
in this thread before, it's "ded-reckoning", not "dead-reckoning". The
"ded" stands for "deduced", not whatever "dead" might stand for other
than the obvious.

We now return you to your regularly scheduled navigation argument.

--
Marc J. Zeitlin
http://marc.zeitlin.home.comcast.net/
http://www.cozybuilders.org/
Copyright (c) 2005