>I'm interested in origin of the term "dead reckoning".  I read somewhere 
>that it came from "ded' reckoning" i.e. "deduced reckoning".
>
>Any thoughts?
>

I have no idea. My guess it was named after people like me who when trying
to use it as a method of navigation end up dead:-)

Mike Koblic,
Quesnel BC

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