New from the CUBC Prince Albert 4 who use Coxmate SCT and a GPS.
The Henley Regatta is traditional and has its own unique markers and distances. From the Start the first timing marker is called The Barrier. This is in fact 637.3 mtrs from the start.(according to a brass plaque fixed to the barrier post).
We did a piece to the barrier yesterday and the Coxmate recorded 637 mtrs.
I think that is accurate enough for rowing!! I pointed out to the cox that she must have steered straight!