sail-world.com
 
 
News Home Cruising Photo Gallery Video Gallery
Sail-World.com : Stealth i14 out of China
Stealth i14 out of China

'Stealth v1 head on and skimming upwind'    Andrew Gough

Innovation and boat handling are synonymous with the International 14 which has remained remarkably progressive considering it is one of the oldest racing classes in the world.

Encouraged by a semi-restricted class rule, the i14 is all about controlled evolution. From trapeze and asymmetrical kites, to foils and carbon, the class has a good record of embracing change, albeit with the inevitable pain.

Innovation however comes at a financial cost and carbon is a good example. It is a fabulous boat building material that delivers incredible high strength to weight ratios. Not surprising, i14 sailors love carbon but that love affair can be expensive due to relatively high material costs and labour-intensive construction demands.

The class, fortunately, is not short of its fair share of resourceful sailors. For several years, a small group of Australian i14ners, led by an unbreakable class president Stewart Vickery, have tinkered with production-run boats.

Stealth v1 bow section at launch -  Andrew Gough  


The challenge of course has been to settle on a design that will give top end performance and to source a builder who has the systems, resources and ability to build in carbon at prices affordable to a wider audience and not just the well-financed class fanatics.

It would seem the Australians have hit on an attractive formula with the Stealth design and a carbon boat builder in China who has built moulds and refined processes to produce a significantly less expensive, light, strong, quality boat.

The result is a super stiff i14 at approximately $13k (all dollars are in US) for hull and racks clear finished plus approximately $2k for duty and freight; or for $15k you are looking at hull, racks, centre board, rudder, foils, rudder box clear finished; plus duty and freight. This means a saving of more than $10k.

Peter Newman of China New Yachts Ltd says they were using products that were available in China at a competitive price which were thoroughly tested in other boats. The 'other boats' from this builder have included the 44ft Veloce which finished second overall in IRC in the 2013 Sydney to Hobart Yacht Race.

'The laminate is carbon pre-preg and Corecell SAN foam construction in female moulds which are cured in our controlled oven,' Peter said. 'We use a woven carbon prepreg cloth on the outside to get excellent impact without adding much weight, all other materials are unidirectional carbon prepregs at various constructs to gain maximum strength to weight ratios. The semi-monocoque construction gives a very stiff, finished hull, clear painted at less than 46kg.'

Newman said they were able to ship to all parts of the world from Qingdao, which was home to the fourth largest container port in China.

Fleet start with Anthony Anderson closest to camera in a Stealth -  Andrew Gough  


Designer David Lugg of Western Australia said Stealth was designed a couple of years ago and has since proven to be an easily driven, stable hull well suited to today’s rigs.

'The boat was designed for the moderate to strong winds and relatively flat water that make a 14 such as great boat to sail,' according to Lugg. 'Although the boat’s light weather performance has been good, it was considered some small modifications would further enhance its performance with minimal impact on speed in the stronger wind conditions.

'The construction of new moulds offered the opportunity to tweak the lines. The chine was lifted slightly at the stem and narrowed by 30mm a metre aft of the stem. The Stealth design had a very straight, flat run aft. A small amount of keel rocker has now been added.'

Multi national champion in the Australian i14 fleet Brad Devine knows Lugg well and said: 'I really like Luggy’s design and like the concept of having a cheap builder that can build to high standard with a good design.

Stealth illo - startboard beam oblique view from below waterline -  Neil Patchett  


'The designs (eg., B5, K3 and Stealth) within the class now are all that similar, that as long as the hull is light and stiff, that is all you need. The next step in the equation is getting a good rig, which is pretty standard now days and a good rudder and centerboard, which is also very standard.

'The way things are shaping up with the boat at this stage, I would suggest that it will be a great success.'

Victorian Dave McGeoch was one of the first to order a Stealth from China.

'I can let you know that for someone who has watched the 14 class develop since 1977 to today, it shows to me that the imagination from many sailors in regard to design, construction and fitouts is exceptional.

'The impressive way this build was handled by Peter Newman from the legal documentation of the contract of sale to the regular information supplied at milestones of the build and of course the final delivery has left me in no doubt that his professional competence has been outstanding.

Designer-Sailor David Lugg -  Andrew Gough  


'It appears to me that the light weight 44.5 kg less spin pole, racks and fittings would seem to give me some concern (regarding strength), but having carried out some destructive testing on a sample of the hull it has barely marked the outer skin with no compaction of the inner core.'

'The boat's hull looks great and is clean with a simple deck design for ease to fit out.'

The Royal Geelong Yacht Club has opened online entries for the 2015 International 14 World Championships, which are to be held from third to 17th January 2015 in Geelong, Australia.

The 2015 event will mark only the third time that Australia has hosted this World Championships, with the previous event being run on Sydney Harbour in 2010 when more than 100 i14s lined up to start.

Designer Notes:

The hull sections, although fine forward, rapidly become very flat aft of midships and lift to a low chine. The end result is a hull form that has significantly reduced draft compared to other current designs, promoting earlier planning. Modern i14’s sail upwind at speeds in the 8 to 12 knot range. Stealth makes a very smooth transition between displacement and full planning mode.

The more powerful, lower drag rigs used today suit a hull form that is flatter and fuller in the ends. The effect is to increase what Naval Architects refer to as the prismatic coefficient, a ratio describing the longitudinal distribution of underwater volume. Higher prismatic coefficients are closely associated with higher hull speeds.

The i14 rule measures the mast height above the sheer line at the mast station, consequently the higher the sheer, the higher the mast. Additionally the increase in sheer height has the benefit of making the boat much stiffer longitudinally and keeps the rack tubes well clear of the water.

The sides of the boat are slightly cambered to increase panel stiffness allowing a thinner, lighter core to be used.

The angle of the bowsprit has been increased from the original design to give the spinnaker tack a greater clearance to the water when the crew weight is moved forward in light weather.


by Neil Patchett


  

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

http://www.sail-world.com/index.cfm?nid=125683

5:35 AM Sun 17 Aug 2014GMT


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







News - USA and the World

Roger Hickman skipper of Rolex Sydney Hobart Yacht Race IRC winner Wild Rose sat down with Geoff Waller of www.boatson.tv and described just what went into his boat winning the 2014 Rolex Sydney Hobart Yacht Race. His was a 'full-on' race (with dramatic 'on-board' video) which included a knock-down, broken steering, a wild 'Chinese gybe', storms and only a small amount of blood spilt. ... [more]  

The world’s elite sailors are preparing to meet in Singapore for the opening Act of the 2015 Extreme Sailing Series™, which is set to bring the world famous Marina Bay alive with its pioneering Stadium Racing concept. With the transfer window now closed, some new players will enter the arena as the Series launches into its ninth season, with continued support of Series Main Partner Land Rover. ... [more]  

2015 ISAF Sailing World Cup Miami - Day 4 photos provided by Ocean Images. ... [more]  

2014 - 2015 Barcelona World Race - No scape south because of South Indian Ocean Antarctic Exclusion Zone means a painful wait for Anna Corbella and Gérard Marin on GAES Centros Auditivos. ... [more]  

The expansion of sailing into so-called developing countries, continues at the ISAF Sailing World Cup, Miami, with newly embraced Cuba joining the 64 nation line-up encompassing 600 boats. The 2015 fleet on Biscayne Bay is a record turnout, for this second event on the 2015 Sailing World Cup Circuit ... [more]  

Day 4 of ISAF Sailing World Cup Miami 2015, Presented by Sunbrella, saw the US Sailing Team Sperry make steady gains in the Laser and Laser Radial classes as gold fleet racing approaches its conclusion. In the Sonar, Rick Doerr (Clifton, N.J), Brad Kendell (Tampa, Fla.) and Hugh Freund (South Freeport, Maine) will go for gold tomorrow in the final day of Paralympic racing. ... [more]  

At exactly 00:01 on the 29th January 2015, TeamVestas?' VO65 left VTE - Voltri Terminal Europa en route to Persico Marine in the foothills of the Italian Alps. The boat is now safely secured in a purpose-built facility near Bergamo, awaiting full assessment and the beginning of the repair process. ... [more]  

ISAF Sailing World Cup Miami Day 3 - There's a world of difference between skiing a long, smooth run and skiing on moguls. Today, forget the waves, it was the breeze on Biscayne Bay that was 'moguls.' Shift upon shift upon shift upon shift. ... [more]  

Ioannis Mitakis (GRE), the 2012 Finn European Champion, ruled the roost in Miami today with two emphatic race wins and moves up to third overall. Giles Scott (GBR) sailed his worst day so far, but still leads with a five point gap on Jake Lilley, and 12 points over Mitakis as the event reaches its half way stage. ... [more]  

The International DN Ice Yacht World and North American Championships are being held in Kingston, Ontario (right in front of our office). For the Kingston Yacht Club, we skated out to the middle of the lake, and put together a little highlight piece for them to remember the event by. ... [more]  

Doyle Sails had more success last weekend in the Auckland Optimist Championships, taking first and second overall in the 110 strong Open fleet. Six countries were represented in the event, and young sailors came the length of New Zealand to compete in the regatta that is a ranking event for World and International team selection. ... [more]  

EFG's Star Winter Series rules in Biscayne Bay by Connie Bischoff, Miami, FL
The third Star Winter Series presented by EFG (SWS) and hosted by Miami’s Biscayne Bay was a shining success. Not only have all five regattas had stronger participation than last year but the final one, the Mid Winters, grew 35% with 45% of the sailors international (CAN, SWE, BRA, UKR, ARG, ITA and GER). ... [more]  

2015 ISAF Sailing World Cup Miami - Day 3 photos provided by Ocean Images. ... [more]  

Day 3 of ISAF Sailing World Cup Miami, Presented by Sunbrella marked the midpoint of North America’s biggest Olympic and Paralympic classes regatta. With bright sunshine and fresh breeze in abundance, the world’s top athletes in 13 classes were treated to the conditions that exemplify why Miami is a preferred international sailing destination. ... [more]  

It was windshift upon windshift upon shift upon windshift on Day 3 of the ISAF World Sailing Cup Miami sailed on Biscayne Bay Presented by Sunbrella, the premier regatta has attracted 599 boats and 768 sailors who were adjusting all day to one thing or another. If it wasn't the wind direction that was changing, it was the wind speed. ... [more]  

Following the success of the Mount Gay Round Barbados Race Series that concluded last week, the dates of next year’s event have been confirmed for 16-24 January 2016. With overseas competitors from 11 nations represented a large part of the 47-strong fleet overall at the 2015 event ... [more]  

Ben Ainslie Racing, the British Challenger for the 35th America's Cup, have shipped two foiling Nacra 20 catamarans to Bermuda and have become the first team to commence sailing operations at the Venue for the next Cup. The team conducted an initial training camp in Bermuda, last week. ... [more]  

North U kicked off its 2015 season of youth match racing clinics around the U.S. with a successful clinic hosted by the Texas Corinthian Yacht Club in Kemah, Texas on Galveston Bay near Houston. Forty high school and college sailors spent two-and-a-half days learning about match racing and training in Sonars on flat water and 6-12 knots of breeze. ... [more]  

A fantastic week of sunshine, warm weather, big breeze and competitive sailing is what sailors were treated to last week in Key West. Several Canadians left the bitter cold of the north to partake in the fun filled week and a few even brought home trophies. Here's a peek at the fun in the sun! ... [more]  

At ISAF Sailing World Cup Miami, presented by Sunbrella, if the Chamber of Commerce had stayed up all night working at it, they could not have served up a better day for racing. ... [more]  

On day 2 of ISAF Sailing World Cup Miami, Presented by Sunbrella, the rainstorms of yesterday vanished but the excellent wind conditions remained in place on Biscayne Bay. A more conventional day of racing saw US Sailing Team Sperry athletes finish the day in the top 10 in 5 Olympic classes and 2 Paralympic classes. ... [more]  

Bringing Dragon Sailors from around the world to Antigua. Harmony Hall Yacht Club, with the support of the Antigua Yacht Club Marina and the Inn at English Harbour, will host the second Annual Antigua Dragon Yacht Club Challenge with nine races scheduled to take place over five days in fantastic Caribbean conditions on identical Petticrow Dragons. ... [more]  

There are so many ways that the Dongfeng Race Team could have lost the chance to win the light-air marathon from Abu Dhabi to Sanya in China. Leading from the first 24 hours to the finish, 23 and a half days later, 5,403 nautical miles sailed and eight different gulfs, oceans and seas, is not necessarily the most advisable way to try and take the spoils. ... [more]  

Sydney photographer, Michael Chittenden was on Sydney harbour last Sunday and captured these images from Race 4 of the NSW 18ft Skiff Championships ... [more]  

New Zealand short-handed sailor, Conrad Colman is on his second two handed round the world race, this time aboard the Spirit of Hungary with Nandor Fa sailing in the Barcelona Round the World Race: I had noticed a couple of chafing zones on the mainsail so I prepared some patches and the Dr. Sails flexible epoxy glue so we could drop the main quickly ... [more]  

2015 ISAF Sailing World Cup Miami- Photos provided by Ocean Images. ... [more]  

Photographer Ingrid Abery was on the water at 2015 ISAF Sailing World Cup Miami and provided this gallery of images. ... [more]  

2015 ISAF Sailing World Cup Miami - It may have been a day late for Australia Day, but on the second day at the Sailing World Cup Miami, the Australian Finn sailors were on a charge with some sparkling performances. Giles Scott (GBR) still leads after winning the opening race of the day, while Jake Lilley (AUS) won the second and moved up to second overall. Ed Wright (GBR) is in third. ... [more]  

2015 Pineapple Cup – Montego Bay Race is set to begin Friday, February 6. The 32nd edition of the venerable Pineapple Cup – Montego Bay Race will start in Port Everglades, Florida, and send its 12-boat fleet on a challenging 811 nautical mile course to Montego Bay, Jamaica. George Sakellaris’s (Framingham, Mass.) 72-foot Shockwave will be the largest boat competing, so it should be interesting to ... [more]  

VX One momentum is growing with ever larger fleets showing the pure fun and easy performance of this true thoroughbred one design. ... [more]  

Last Friday, former Oracle Team USA team member, Matthew Mitchell issued a media release stating that he has lodged a complaint with the International Sailing Federation over the actions of a fellow crew member, Simeon Tienpont, and inaction by the International Jury for the 34th America's Cup, in San Francisco. ... [more]  

Volvo Ocean Race: A warm and colorful welcome for Team SCA into Sanya by Richard Gladwell/Sail-World.com NZL, Auckland, NZ
The all-female crew, Team SCA, arrived to a warm and colorful welcome including fireworks, Chinese dragons, orchid garlands and traditional costumes into the city of Sanya on Hainan Island in southern China early Tuesday evening (local time). 'It was a really different leg. I wouldn’t say it was hard in terms of the physical side but it just had lots of things coming at all angles ... [more]  

Touch2Play had the great fortune of participating in what would be the largest yet gathering of J88’s to date. Quantum Key West Race Week would serve as a chance to see how boats lined up against one another in conditions that covered the full range. For this event we had Rob and Sandy Butler, Steve Leibel, Keven Piper, Coleen Walsh and myself, Larry Huibers. ... [more]  

Barcelona World Race leaders split paths
Tokyo 2020 Paralympic Games - Final line-up to be announced
ISAF Sailing World Cup Miami Day 1 - Brits off to a flying start
ISAF Sailing World Cup Miami - Tough Day 1 + Video
ISAF Sailing World Cup Miami - Tough Day 1 + Video
RC44 World Championship Leg 1 - RC44 Valletta Cup preview
ISAF Sailing World Cup Miami - US Sailing Team Day 1
ISAF Sailing World Cup Miami -Finn class -testing conditions on Day 1
ISAF Olympic classes regatta Miami 2015 images by Ingrid Abery
Volvo Ocean Race: Team Alvimedica wins first podium place in Sanya
Volvo Ocean Race: Dongfeng scores historic victory for China
Volvo Ocean Race: Dongfeng release first DroneCam video from Leg 3
Volvo Ocean Race: Chinese team set historic first with home port win
Volvo Ocean Race: Team Vestas Wind arrives on time in Genoa + Video
America's Cup - Virgin considers backing Ben Ainslie, BAR
Bell's Beer Bayview Mackinac Race - Changes
Alpari World Match Racing Tour - Monsoon Cup preview
Barcelona World Race - A game of chase
Quantum Key West Race Week: Four GC32's make spectacular USA debut
Volvo Ocean Race – Frostad says Caudrelier proving them wrong *Feature
Volvo Ocean Race - Last day drag race to Sanya   
Volvo Ocean Race Leg 3 - Tense onboard Abu Dhabi Ocean Racing   
Volvo Ocean Race Leg 3 - Dongfeng Race Team pushing hard!   
Volvo Ocean Race: Leg 3 Finish - Video - Delayed feed   
2015 ISAF Sailing World Cup Miami - Countdown begins   
Volvo Ocean Race: Donfeng set to create a piece of sailing history   
Barcelona World Race - First of the iconic Great Capes has been passed   
Classic 18fters racing on Sydney Harbour   
Volvo Ocean Race - Can Dongfeng still hang on for a Sanya win??   
Stephanie Roble, 2014 Rolex Yachtswoman of the Year   
Barcelona World Race - Taking advantage   
Oakcliff Awarded Joe Prosser Award at US Sailing NSPS 2015   
20 Nations head for 2015 St.Maarten Heineken Regatta   
Volvo Ocean Race - Less than 500 miles to go   
2015 Quantum Key West Race Week - Fantastic finish   
Barcelona World Race: Weather beacons launched midrace   
2015 Quantum Key West Race Week - Day 5   
Mount Gay Round Barbados Race – Gala prizegiving marks end of event   
2015 Quantum Key West Race Week - Day 5 images by Ingrid Abery   
Volvo Ocean Race Leader - Dongfeng - the right place at the right time   


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.
XLXL NEW US
LocalAds   DE  ES  FR  IT