"Dave" wrote:

I'd call it course and speed made good..

Dave , you definitely will get 2 Anicula-points for your answer. And I
am very happy to see that someone seem to agree with me on this.

I suggested "Velocity over the ground ..." which I think is the same,
(I assume that velocity has both a direction and a size). I am not
really that familiar with your language, but I think that "course and
speed made good" sounds simple and on the point.

The other answer that I liked was Scouts "a Resultant" which I also
think would be right, though not saying much.

If one sails a variety of courses that would put you in new position
(different from your start-position) if there were no leeway, current
etc., I think it is absolutely crazy to call it set, current or a
tidal vector or any such thing.
A good navigator might not always end up exactly where he planned, but
the art of navigation demands that you use a clear and precise set of
conceptions, and that you use them right.

This is the reason for my ardent spirit on this subject, though ardent
spirits also might have something to do with it.

Peter S/Y Anicula

P.S. Are you familiar with a boat called "Ardent Spirit" - I think it
was owned by someone called Besser. That boat used to make me drool.