America's Cup

[Madness]

sorry i seem to have stumbled into the associations thread

Sorry, I couldn't resist.

[Drew]

I learnt in sailing dingies and it was a fun thing to learn in cats.

For this discussion 0 degrees is the wind coming from the front of the boat, 90 degrees directly from the side and 180 degrees from the rear.

- Imagine a cat sitting still in the water at 90 degrees to the wind.

- Now as the cat starts to sail forward, still at 90 degrees to the true wind the apparent wind direction starts to swing towards the front of the boat. Now if the cat is doing 20 knots water speed in this 20 knot wind the apparent wind direction will swing to 45 degrees.

- These cats can easily do 40 knots water speed in 20 knots of wind in a broad reach (~90 degrees to the wind). At that speed the apparent direction would be 26 degrees (atan .5). The wind speed that the boat experiences is root 5 or 2.23 * 20 = 44.7 knots (you've heard of boats making their own wind).

- So at this heading 90, the apparent wind is 26 degrees at 44 knots. See that scool c maths was useful after all.

- Now start turning this imaginary boat to head "down wind" a little bit. The wind is still coming from the front of the boat and the speed and apparent direction and spped is still fromthe front and way faster than the wind.

- With these boats with their wing sails they can turn a long way down wind and keep the boat speed up. This results in their VMG towards the mark being higher than 20 knots (= true wind speed)

- So the boat is heading down wind, and the apparent wind is still from the front of hte boat. So they tack rather than gybe down wind.

It's kinda simple, and tricky at the same time!

So dumb not to consider that once they are traveling at or faster than the wind speed, they essentially have a head wind...of sorts.

My head has caved in again.

[awa355]

Well, if they flip today, this crowd may be able to help them out. The project for uprighting the Itie liner. They are going to try today to roll the ship.

http://www.theparbucklingproject.com/ May have a job getting onto the website tho', plenty of interest in this rescue.

[willytheekid]

...Spithill tweeted

"No need for a hash tag" and attached a photo of a sign on a noticeboard that read "There is no "I" in: Just beat the F....ers".



Grant Daltons reply...will be in just a few hours


...I hope they kick the shit out of them today

GO TEAM NZ!

[young1]

Go Team New Zealand!!!

[leathel]

well that was not to flash to watch...



Put some of that to the port entry start, some to all the great TV footage showing them exactly how and when to lift and drop boards (even underboat footage )

and some to the Kiwi boat builders they got in last minute to sort there boat.

and maybe up wind with tide might be OK.... where as when we had the better speed was up wind against tide??

We have port entry next so time will tell ......

[Hobbyhorse]

When Deano gets pissed off he sails better.

[paturoa]

Oracle was clearly the slowest boat at the beginning, then they caught up on boat speed. Now their boat is faster mid series. So their brains are working quicker in their camp.

Question is now can they win 7 races before team unzud win 2?

[Mental Trousers]

It's always much easier to win a race from the front. Winning the start up's the odds to about 85% you'll win the race.

I did notice in the second race heading upwind Oracle suddenly found a bit of pressure and closed the gap for that first dip. Being in the right place at the right time certainly doesn't hurt at all.

[oldrider]

Oracle was clearly the slowest boat at the beginning, then they caught up on boat speed. Now their boat is faster mid series. So their brains are working quicker in their camp.

Question is now can they win 7 races before team unzud win 2?

Something tells me that this series will just keep moving along until the two boats are tied and then ETNZ will take the next race for a nail-bighting last gasp win!

[jasonu]

Something tells me that this series will just keep moving along until the two boats are tied and then ETNZ will take the next race for a nail-bighting last gasp win!

Hopefully... It was looking like a boring one horse race but since the septics have found something it is way more interesting.

[Edbear]

When Deano gets pissed off he sails better.

Andrew Stroud's the same. A lot of top sports people have that "mongrel" in them. When they decide they are going to win, it's pretty hard to stop them.

[Banditbandit]

So now it's seven one to us ... if Oracle continue to let us win two races for their one, then shortly it's going to be nine to two ... to GOdzone ...

[awa355]

Watched the 10th race on tv on demand. I think I prefer the american commentators to Tasker and Lester.

[Road kill]

Love the post race comments from the skippers.

Barker must have ice in his veins because he's the coolest bugger I've even seen.