Four of my distinguished and erudite readers have already commented on the question raised by my Dutch correspondent about the Coriolis effect and its part in sailing tactics. They all were sceptical about the suggestions in the email I quoted.
They may be right. But just ponder these questions before you dismiss the subject...
1. Can wind direction at the top of a mast be different from the wind direction at water level?
2. If so, and you measure wind direction with a mast-head instrument and boat direction with a deck-level compass, then won't the angles between the close-hauled course and measured wind direction (tacking angle) be different on port and starboard tacks?
3. What causes the difference in wind direction between the top of the mast and water level? Isn't it the shifting of the high altitude wind by the Coriolis effect? Isn't it always to the right in the northern hemisphere?
Just asking. I haven't a clue about this issue as it really doesn't come into play on a Laser. But if your mast is 292 ft high... what then?