"Wally" wrote in message

| I meant that the wording of the question is such that the unwary might
| assume that it is a round trip - which it could be - but it might not be.
| The vector can be anything, IOW, so I think he's looking for the name of
the
| resultant vector, and not its magnitude.


Astute.... but COG has been deprived of SOG and my ETA is now as dubious as
my DR ... now I need a drink of Rhumb! :-)

CM