I want to know what happened when it splashed down again.

to quote a phrase: "I want that one"

hardest boats in the world to sail, barefoot too, respect is due!

Nice one!

er, wow.

Check out their very very groovy rudder, which has some pretty amazing features like the short chord at the point where it pierces the surface to reduce ccavitation at high speed.

I recon thats the most amazing foil I've seen since the hydrofoiling moths. I know what I'll be making for my next cherub rudder.

ummm yeah... i understand that

im sorry lucy i havnt really a clue wat u just said, im not very knowledgeable on anything to do with sailing as a matter of fact. i can see that the rudder is a funky shape alright but i dont really get what it would do, much obliged if u could explain? (i know what cavitation is,i think, but not how the rope would stop it)

I'm fairly sure that "short chord" is a reference to the width of the rudder at that point. - you will see the concave curve on the top of the rudder making it a shorter shord at that point. Nothing to do with rope.

Of course I may just have made a fool of myself there. 

Chord is the straight line distance between the leading and trailing edges of a foil (or sail).  Cord is another name for rope!

Cavitation is the rapid formation and collapse of vapour pockets in a flowing liquid in regions of very low pressure. This most often happens when water boils at normal temperatures due to very low pressure on propeller blades. 

This doesn't happen on dinghy foils.

I think when a rudder stalls, it's due to the water flow detatching and air being sucked down the low pressure side from the surface, and is called aeration, or something like that.

A dinghy's never going fast enough to boil the water, so cavitation is a commonly used misnomer in this case.

Quite a few classes have rudders with a narrow chord where they pierce the surface. The 470s have been doing it for years. Not sure it makes a huge difference, and it's quite a test of foil building to go making it narrower right at the point where it needs the most strength!

Ah, I can see you've never sailed a Cherub

Just kidding, I was completely wrong. It isn't cavitation but aeration. I rather like the fact they have a nice short foil at the surface piercing point and still keep pleanty of surface area under the water to make sure they can steer at Mach 10 (approx.)

The short chord limits the effects of ventilation.   When a wing or foil is working there is a low pressure and a high pressure side.  Now the low pressure like nothing better than to mix it up with the high pressure side.  Ventilation is when you have a foil operating at a medium (air, wter etc) interface, i.e. in the water right by the surface.  The low pressure flows up the foil to meet the air and equalise itself. When this happens you lose lift and you create drag.  Viewed from the rear (!), the rudder will have unequal water levels on each side.  This is the ventilation. 

The shorter the chord the less lift and hence less ventilation there can be and therefore the less drag.  If you don't put fences at the top of your rudder then you will just have to accept ventilation.  Rudders would work much better with longer chords lower down but the engineering (too much stress at the stock) stops this.

Btw the pressure differentials created across foils can mean that water boils and hence cavitates.

right its coming up to that dreaded time again, monday morning, so does anyone have a photo for the week about to start?
something to get me thru monday at least, i love looking at the pictures people post, it gets me looking 4ward to the weekend. i have a choice sit n do my ict projects thats like a massive part of the final grade or come on yachts n yaching, i think u can guess which wins

Here ya go Mate...

How about this?!

well kl, whos moth is that btw? is it a british international moth?

That trimaran photo was genuine, and yes they did recover it apparently!!

Scary stuff, I'll stick to dinghy sailing I think.

The moth's from Germany or Holland I think, it's on the German Int moth website.

Yep, it is genuine and they did recover.  Maybe with dirty sailing kit mind....

Originally posted by Chris 249 Hmmmm, Mistral sailor in the background sheeting in and loving it, some guys on a Tornado with the forward hand standing there brave and tall and the skipper skulking down to leeward, too scared to get on the wire. If you look closely, you can see his white knuckles and terrified brow from here, and yet he sails that old people's home known as a Tornado rather than a fast lively cat like a Taipan 4.9.......what's wid dat guy????

Hey Chirs.  First of all I am not stupid enogh to get up there with the crew.  I know what I am about to do.  Put it in the piss big time.(actually better VMG with one on wire).  I also sail the T because I don't like sailing slow Taipans.  Don't think a 4.9 would survive in this too well.

Originally posted by Chris 249 I bet he didn't even sail this Sunday......WE would have sailed this Sunday, of course, if only we hadn't agreed to let some Vicwegians use the boat. We woz raring to go.

Hard to sail without a boat.  I was down at the club and saw you running away with your boats in tow.  I was ready to crew for you in that 35 knot southerly

Not long after they called the racing off at 1.00 pm, the wind dropped to a perfect 20 to 22 knots

Moments before a gust from over the breakwater bit us in the a$$

Looks like the T foil rudder did not do the job

Going back to the original 12' picture, I was lucky enough to be sailing the only 12 in the UK last weekend, and the afternoon got quite windy.  Let's just say bye bye 49ers downwind, and the new Gill black/yellow gloves are nearly knackered now...

Some pix to follow on http://www.sailingsource.com/cherub - www.sailingsource.com/cherub (cos' it's a Cherub with a C-Tech rig and Fyfe sails...yes it measures as a 12.  Pix however are on a MUCh calmer day!!

Oh yeah, we also trashed the Frederiksen self tacker...oops...

Cheers

Iain

i notice a common theme of catamarans and trimarans this goes to prove they are the most extreme boat!!!

hopefully this will annoy enough people and get some good arguments""""

Just to be fair, here is a pic of the Bull 9000 we raced at the Savills Regatta in Sydney.  Shot taken on the return trip to Pittwater in up to 38 knots with full main and number 3 and only 2 guys on the boat.  My mate took this shot from his phone whist holding onto the back stay

T_A in the one that u posted at 8:33, who(or what) is that in the water? it looks like some suicidal fisherman standing on water???

Kite surfer mate.

a new method of hiking, maybe it's the way forward??

lol cheers, i'm too blonde 4 this game

a Libera capsizing!(at least thats wat came up when i searched libera on google) thats... um a keelboat that has about 15 trapezes on it, and it stil capsized! dunno when the photo was taken...

http://translate.google.com/translate?hl=en&sl=it&u=http://www.navimeteo.it/navimagazine/04_inverno2004/trofeogorla.html&prev=/search%3Fq%3Dhttp://www.navimeteo.it/navimagazine/04_inverno2004/trofeogorla.html%26hl%3Den%26lr%3D%26rls%3DRNWE,RNWE:2004-41,RNWE:en - description, in english the translation is kinda finicky coz its from italian, but u can get the gist of it...

do you think they are trying to work out an excuse to tell the owner??

that would be well expensive. does anyone know did they get it upright agian or was the dreaded cut the mast off job. 

its a sample note from the application.  i dont know who joe is, ring up sony ericsson and ask who joe is.

that looks fun. NOT

  Looks like the Bow Man needs a snorkel

Originally posted by Scooby_simon

Enough said - that is the photo of the year, decade, century etc

It will certainly make a good story to tell her Grandchildren

"Well it all started when i decided to sail around the world on my own without stopping....."

Congratulations Ellen

did these boats survive

and the crew