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Great explaination about lift and drag and sail trim errors, thank you!

If you want this level of crazy service you better do it yourself or call this guy. You are not getting this level of clean from an auto or trailer shop.

In light airs and with a fully battened sail with large roach, how do you reduce hooking of the leech if the vang should be left loose to achieve twist? I’m wondering how best to play the vang versus the mainsheet in the light conditions.

What happened with your website? I can't make account

You are the G.O.A.T. man

What about the the centerboard swap?

Example five must be wrong. The narrator says that after Green gybes they are on opposite tacks, but green gybes to port. The narrator goes on the say that Green completed her gybe before meeting red Had Green not gybed she would have had the right of way. It’s pretty clear they were trying to say once they were on opposite tacks Green had right of way. Just got it backwards is all.

Thank you for this video on VMG.

It helped me understand this rule too.

Really good and bought together a few different concepts for me

Excellent interview. Very good questions and the graphic support is helpful.

Gonna jump in here after the airplane wing analogy. Changing the attitude of the wing to airflow does change the AoA, but it does not control the climb or dive behaviour. That is controlled with the throttle. The old model Bernoulli model of pressure difference has also been - not entirely- discredited but still in vogue because it is easier to understand than Circulation Theory. Which is how lift actually works on an airfoil, but nobody wants to do the math, or at least very few are capable of the calculus. You don't really need to work the numbers, the telltales are doing that.

Sorry. Call them by colors or make the letters larger. Hoping this is helpful to you for next time. Can’t see letters

Download our SailZing.com routing guide for Melges 15 running rigging here: sailzing.com/wp-content/uploads/2022/09/Melges-15-Line-Routing-SailZing.pdf

What happens if three boats are overlapped and the leeward boat pushes the middle boat up into the windward boat? So green pushes blue into yellow. How can blue make room if it’s trapped?

Are you sure that so much grease in the hub will not make a issues later. To me at some point it will heat up and will get watery and start leaking, grease is good, but when to much then goes opposite way! How the trailer been doing?

An important question, i need a physics answer. In the case that vgm is parallel to the the wind Is it possible that the value of VGM is bigger than the value of the wind?

Lifted tack - What does that mean?

Great Vids! Example 8 illustrates no overlap. Does that mean blue has acquired mark room rights simply by being in the zone when approaching the finish line down wind?

while u did a good job your cameraman should be fired immediately!!! 🤠

Great vids, thanks. So there’s going fast in the water and going fast towards the mark.

Thank you very much for the excellent guidance, which we think will help us race and cruise better! One very minor but fun point on weather- in the sixth minute, this video incorrectly suggests that global Coriolis effects consistently veer or back masttop wind direction. That effect is insignificantly small at the scale of a boat and its mast, or a bathtub drain, contrary to popular belief. Local obstacles, or squalls swirling either direction, cause any actual shifts in true wind layers. Of course, you correctly stated the typical apparent wind shift factors.

Best explanation of sail shape I’ve ever seen!

Great stuff! Thank you !

Is it save to sail in between the backwind and blanket zone? is there clear air?

Is it tactically legal if yellow is on starboard, close hauled and below the layline and enters the zone after, or at the same time as blue, who is on a port tack and fetching the mark, (yellow has to tack to port to make the mark on a port rounding after forcing blue off course) and forces blue to tack to starboard to avoid collision sending blue upwind of the mark's layline?

How does Scenario 2 'Fast Luff' relate to Keep Clear b) 'if the right of way boat can also change course in both directions without immediately making contact' - was the change of direction in the Scenario too extreme?

Thank you so much for doing this video theres no other video like this :)

What program did you use to draw these situations? Thanks!

What lake is this?

Thank you. Fair winds 😎

I still don't get it.

Brilliant video! - Found this from your website

I need advice on the inevitable separation bubble just behind the mast, please explain.

Very useful thanks

The Toggle for gnat vang is backwards. The flat part goes on the bottom and the 45 angle on top.

You installed the spreaders wrong green is starboard and red is port.

Some of the worse camera work ever

Great advice - thanks!

Heather Abby Brown!!!! PDYC!!

Seems great must get to know more.

Excellent explanation, so understandable. Now my problem will be to remember it in the heat of the moment on the water

Bit confused... at 3:30 you say the angle of attack will be 'smaller' (?) at the top of the sail. Is that because it IS twisted, or because it IS'N'T, and so needs twisting? Or would twisting make it worse? And I'm afraid no, I cannot see the twist very well with the diagram, as I'm not sure what I'm looking at... then you say a twisted sail will have LESS camber? So it's more twisted when it's flatter? I'm just totally confused now

”Leech telltales streaming intermittently”. Does that mean they are just about to stall or just about to luff? I mean do we seek maximum lift or maximum lift/drag ratio here?

Great interview!

My experience with this rule is that it doesn't really hold up well in the protest room unless the boats are of the same class (exactly the same). This is particularly true with mismatched symmetric/asymmetric class boats where fair and proper course has an even wider definition. I've seen it enforced well in team and match racing however when there are umpires around though. :). Very good scenarios to go through!

Here's a good real life GoPro example of the Rule 19 Example 1 given at the starting line. The boat taking the video did NOT have rights to have room but allowed the lee boat to pass ahead first. Good thing the starting line wasn't too crowded! ruclips.net/video/KLBU2WEiwOk/видео.html

Here's a good real life GoPro of a rule 19/20 scenario. In this case the boat that was hailed did not respond. What should happen then other than observing rule 14. (avoid collision): ruclips.net/video/QXw1iAKfO5k/видео.html

Excellent breakdown. I had forgotten the 18.4 does not apply in a gate scenario. Here's a good real life GoPro that shows a 18.3 situation. ruclips.net/video/xDDLztijklI/видео.html

Great interview! Just getting into sailing and I’m so glad I have this introduction to the new Melges 15 boat. I have heard of Eddie Cox before. Such a legend in the sailing world so glad he is the one to explain this boat!