On this voyage, we recorded the wind speed on deck as an element of the Deck Log.
When we've studied wind speed in depth for research projects, we often simultaneously compare wind speeds on deck and at the mast tops. Our findings during these experiments indicate that the wind is consistently stronger at higher elevations.
This would have come as no surprise to the shipwrights who constructed the original d'Halve Maen in the early 1600s; after all, top sails are desined specifically to harness those higher, more powerful gusts.