www.smh.com.au/sport/sailing/us-boat-takes-flight-and-almost-sinks-in-chaotic-america-s-cup-preliminaries-20210117-p56uqz.html

Here is a link you can acess without joining smh


www.tvnz.co.nz/one-news/sport/other/capsize-dean-barkers-american-magic-suffer-horror-crash-after-going-airborne-chasing-first-prada-cup-win

My guess is that the computer glitched and didn't go of the mainsheet fast enough.

Gary

Looks like the batteries might have come adrift and went through the bottom of the boat on the port side. One large hole to fix. There's photos on the net. Going to need a few rolls of duct tape.

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garymalmgren said..
My guess is that the computer glitched and didn't go of the mainsheet fast enough.

Gary

The mainsheet/ traveller couldn't de-power the main because the leeward running backstay was still tensioned.

In an interview this morning, Hutchinson indicated that the runner wasn't the real problem - those mains are never eased out so there isn't much adjustment travel on the hydraulic mainsheet or traveller. On really fast sailing craft, easing the main can cause major problems. On foilers when you ease the main, the downwards pressure on the foil reduces and it will lift above the water level and crash on re-entry, which is similar to what happened to the Americans.

He also indicated that the hole was caused by water impact rather than an object; both batteries remained in the boat.