Gybing - Thoughts from Steve Cockerill, Frank Bethwaite... and me

By Doug

In the post about Laser Mainsheet Snags, comments were made about how Steve Cockerill's video suggests letting the boom out to initiate a heavy-air-gybe. I commented that surely letting the boom out would not work because it would be too unstable.

The boom is waaaaay too far out. But even a little out makes things unstable.

Then one of the sailors that Steve sponsors said this comment was correct and the reason for letting this boom out was to intentionally make the boat unstable.

So, let's recap:

• We're in strong wind on starboard and want to gybe.
• Almost all top-level events are held in open water, so there are probably big waves - a tricky situation.
• Steve suggests letting the boom out which is how you invite a death roll and swim (the twist at top of the sail is pushing everything to windward).
• The center of effort is now to the right of the boat which now wants to bear off.
• This initiates heavy air gybe with little or no rudder movement.

I have never tried or even seen this, but it's brilliant!! Except for one problem - it's a controlled heavy-air-death-roll-that-ends-up-in-a-gybe. Steve is a better man than me because my priority for a heavy-air-big-wave-gybe is getting the boom across without tipping.

This brings to mind comments from another world-class sailor. Several years ago, there was a Sailing World cover story article by Frank Bethwaite about how you bear off in a strong gust rather than the more intuitive heading up. 

Trying to head up in a strong gust.

Frank called this 'steering for balance' and it was controversial at the time, with lots of people saying that Frank was wrong. Frank was, of course, correct.

One of the key points Frank made was that by turning sharply in a gust, the boat wants to 'trip' over the centerboard. And the higher the speed, the more the importance as you lose control from the pressure in the rig.

I learned this by accident about ten years ago practicing on a local lake in a 30 knot breeze. With each gybe, the boom would slam across and there was a huge pressure on the rig and in the steering as I tried to get the right balance again. We've all had this problem.

So I tried something different and for me, counterintuitive: as the boom slammed across and I was on a new tack, I bore off to head straight downwind - steering for balance. The helm went neutral and everything worked beautifully, even in 30 knots.

So here's a combination to try when it's really honking - sheet out a little to start a gybe, let the boat bear off on its own, and as the boom slams across, bear off sharply to neutralize the helm. Oh and Ute, try to not wrap your mainsheet around the end of your boom!

In the 90s, the Worlds courses included a gybe mark and in a breeze it was referred to as the graveyard because so many boats would tip at the mark.  My practice sessions would include gybing at a certain point in a breeze and not waiting for lulls.  The goal was to have enough practice and confidence to gybe at any time while maintaining control at all times so that I could maneuver around boats that were scattered in the graveyard. That era inspired Laser sailors to practice and perfect various techniques.  That's the key ... pick a technique that works best for you and then practice it until you're comfortable.