sail-world.com
 
 
News Home Video Gallery Photo Gallery
Sail-World.com : America's Cup: Grant Dalton on the new AC72 - Aotearoa
America's Cup: Grant Dalton on the new AC72 - Aotearoa

'Grant Dalton, Emirates Team NZ Managing Director'    Richard Gladwell ©    Click Here to view large photo

Emirates Team New Zealand's Managing Director, Grant Dalton spoke with Sail-World's America's Cup Editor, Richard Gladwell, after the team named their second AC72 - New Zealand Aotearoa.

(Aotearoa is the Maori name for New Zealand, meaning the land of the long white cloud, said to the the first sighting of New Zealand by the first migration.)

Here he elaborates on the new features on the AC72 catamaran, and the thinking behind them, along with an assessment of the competition and where they are ranked.

There have been some hull changes notably in a fining up of the bow and stern, but overall the focus is on drag reduction, and a new phrase was used by the designers at her launch - parasitic drag.

That theme is continued in the new boat with constructed fairings on most items to reduce the boat's aero-footprint as she moves against the apparent wind.

Perhaps surprisingly, given what happened to Oracle Team USA, the designers have given up some 'pitch stability' to reduce drag.

However Dalton says the big changes aboard are in changes to the way on-board systems work, and a reduction of weight - over the now-commissioned first AC72.

The question to be resolved is the interplay between hydrodynamics (how the foils on the boat will work to lift the hulls) and aerodynamics (wingsail and drag reduction) to find the optimum situation, particularly sailing upwind and whether it is more efficient to sail in complete displacement mode, or fully foiling, or as most suspect whether the real answer lies somewhere in between - where leeway is minimised as is drag from the immersed leeward hull.

Dalton also looks at the opposition, particular Artemis Racing, who have been the first to sail with a second generation wingsail. Dalton says he is not surprised with the changes that Artemis has made, and believes that their original boat and wingsail were too heavy.

First of a series of four with Grant Dalton, Kevin Shoebridge (COO on the shorecrew), Dean Barker (Skipper on the sailing aspects) and Nick Holroyd (Design Director).


by Richard Gladwell

  

Click on the FB Like link to post this story to your FB wall

http://www.sail-world.com/index.cfm?nid=106313

1:26 PM Tue 5 Feb 2013GMT


Click here for printer friendly version
Click here to send us feedback or comments about this story.

Click for further information on
2013 America's Cup

Related News Stories:

05 Feb 2013  America's Cup: Oracle Team USA sails again after three months lost
05 Feb 2013  America's Cup: Onto the next phase for Oracle Team USA
05 Feb 2013  America's Cup: Oracle Team USA relaunch USA-17 in San Francisco
04 Feb 2013  America's Cup 2013 - Emirates Team NZ unveil second AC72
04 Feb 2013  America's Cup: Images from Emirates Team NZ's launch in Auckland
04 Feb 2013  America's Cup: Emirates Team NZ unveil second AC72 in Auckland + Video
03 Feb 2013  America's Cup: Double AC72 launch on Monday on opposite Pacific coasts
01 Feb 2013  America's Cup: A look behind the door at Oracle Team USA
31 Jan 2013  America's Cup: Flying High on the AC72
30 Jan 2013  America's Cup: The End of the Beginning
MORE STORIES ...






News - USA and the World













Team GBR on the Road to Rio (Part One) by Rob Kothe and the Sail-World team,






















































Antigua Classic Yacht Regatta - Race 4 images by Jude Robertson
ISAF Sailing World Cup Hyeres - US Sailing Team Sperry Top-Sider Day 1
ISAF Sailing World Cup Hyeres - Day 1 Nacra 17 images by Thom Touw
ISAF Sailing World Cup Hyeres - Day 1 Laser images by Thom Touw
ISAF Sailing World Cup Hyeres: Ioannis Mitakis leads Finns after day 1
RC44 Cascais Cup - Fresh faces join the line-up
ISAF Sailing World Cup Hyeres - Excellent racing on opening day
ISAF Sailing World Cup Hyeres - Images by Yvan Zedda and Franck Socha
ISAF Sailing World Cup Hyeres - Day 1 images by Franck Socha
Hyeres World Cup: Kiwis lead but Outteridge Jensen back in 49er fray
Belcher and Ryan lead from the start in Hyeres
ISAF Sailing World Cup Hyères - Race day 1 ready for lift off
Clipper Round the World Race 11 - Tense match downwind racing on Day 2
Antigua Classic Yacht Regatta - Day 3 an absolute gem
Quantum Key West 2015 dates confirmed
Flying Tigers 'Psych' - on Lake Lanier they pronounce it Zhik
ISAF Sailing World Cup Hyeres: Anticipation intensifies as start nears
Clipper Round the World Race - Race 11 start images by Chuck Lantz
27th Antigua Classic Yacht Regatta 2014 - Big breeze on the butterfly
Rolex China Sea Race 2014 - Pryde and Joy for Hi Fi
Clipper Round The World Race - A flying start on Day 1 of Race 11   
Cammas on Caudrelier – different styles, same objective   
Clipper Race - Californian crew member continues fundraising journey   
Antigua Classic Yacht Regatta - Race 2 images by Jude Robertson   
Les Voiles de St Barth - Images by Christophe Jouany   
Clipper Round the World Yacht Race - Fleet sets sail in race 11   
Congressional Cup - Canfield and Team US One best star-studded field   
Clipper Round the World Yacht Race - Race 11 to get underway to Panama   
Antigua Classic Yacht Regatta - Race 1 images by Jude Robertson   
Rolex China Sea Race - Hi Fi collects the coveted IRC Overall title   
Rolex China Sea Race - First arrivals in Subic Bay   
Rolex China Sea Race 2014 - a sniff of a hat-trick for Neil Pryde   
America's Cup Book Review: Winging It - Oracle Team USA's comeback *Feature   
Clipper Round the World Yacht Race: Switzerland drops trou for charity   
Rolex China Sea Race 2014 - nip and tuck for IRC honours   
Antigua Classic Yacht Regatta - 27th edition underway   
Rolex China Sea Race - Ragamuffin 90 claims line honours victory   
Saturday June 21st will feature the 39th One More time Regatta   
Rolex China Sea Race - Ragamuffin 90 extends unassailable lead   
Rolex China Sea Race - Commanding lead for Ragamuffin   


For this week's complete news stories select    Last 7 Days
   Search All News
For last month's complete news stories select    Last 30 Days
   Archive News







Sail-World.com  


















Switch Default Region to:

Social Media

Asia

Australia

Canada

Europe

New Zealand

United Kingdom


http://www.sail-world.com/event_images/image/Twitter_logo_small.png http://www.sail-world.com/event_images/image/FaceBook-icon.png  http://www.sail-world.com/event_images/image/RSS-Icon.png

United States

Cruising Northern

Cruising Southern

MarineBusiness World

PowerBoat World

FishingBoating World

 

Contact

Commercial

News

Search

Contact Us

Advertisers Information

Submit news/events

Search Stories/Text

Feedback

Advertisers Directory

Newsletter Archive

Photo Gallery

 

Banner Advertising Details

Newsletter Subscribe

Video Gallery

Policies

 

 

 

Privacy Policy

 

 


Cookie Policy

 

 



This site and its contents are © Copyright TetraMedia and/or the original author, photographer etc. All Rights Reserved.  Photographs are copyright by law.  If you wish to use or buy a photograph contact the photographer directly.
X6XL WAS US