Gould 0738 wrote:
"ded" is the correct term, "dead" is not.




No entry in Lenfesty for "Ded Reckoning."

There is an entry for "Deduced Reckoning." It reads, "See Dead Reckoning."

No entry at all for "Ded" or "Deduced" in
Mckenna. Only for "Dead Reckoning".


Try Bowditch, you'll find some variations (at least in the older editions).
The point being that there are a number of definitions (if you will)
which tend to revolve around this term, and, as in many things
"maritime", many of them vary to some degree based on various national,
regional, vessel type (ship/navy/yacht), historical usage.
It is not as important that you have a specific definition for the term,
as it is that those discussing it, are aware there can be different
interpretations and that their discussion revolves around one particular
interpretation ...... something jax hasn't a clue, may be possible.

otn