Please select your home edition
Edition
Insun - AC Program

ORC announce Velocity Prediction Program improvements

by Offshore Racing Congress on 7 Nov 2012
On the occasion of its 43rd Annual General Meeting, the Offshore Racing Congress (ORC) is happy to announce a major step forward in the accuracy of its Velocity Prediction Program (VPP) to be implemented for the 2013 sailing season. One of the principal aspects of this program, the Residuary Resistance (Rr) formulation, has been revised to now be more accurate for a broader range of yacht types that race within the ORC fleet database.

This new innovation is the result of an extensive multi-year study conducted by the International Technical Committee (ITC) in which historical data derived from tank test results has been combined with new research using Computational Fluid Dynamic (CFD) tools to create the new formulation.

'This is a huge step forward in solving a difficult problem which has faced VPP research for many years,' says Bruno Finzi, Chairman of ORC. 'The Congress applauds the ITC for the completion of this major project that will benefit all boats racing in the ORC fleets around the world.'

The new Rr formulation used in the new VPP is producing theoretical predictions which are much closer to the measured performance data taken from numerous boats in the ORC fleet.

'We looked at this carefully to help validate our results. The implied wind calculations are also much closer to that observed on the race course,' says Alessandro Nazareth, Chairman of ITC.

The Rr project's new formulation was the result of collating the relevant Delft Systematic data, analyzed by ITC member Kay Enno Brink and the CFD results coming from ITC's Philippe Pallu's work at CRAIN and the Fine-marine code work performed by new ITC member Jason Ker. Another ITC member working on this project was Andy Claughton of Southampton University.

'Validation of this new formulation has been very important to ensure that all elements of the fleet are treated fairly,' says Claughton. 'Our tests indicate that if any race from the past is rescored using the new rule the spread of corrected times for the first 10 or 15 boats is reduced, sometimes by 20-30%. This is fantastic progress.'

For more information on ORC's test fleet using the new 2013 VPP, visit the ORC website.
Wildwind 2016 660x82Ancasta Botin Fast40 660x82Insun - AC Program

Related Articles

World Sailing and Volvo join forces for the future of sailing
The partnership is a signal of the Volvo Ocean Race's commitment to the sport and future of offshore sailing. As part of an ambitious plan, World Sailing will partner with the Volvo Ocean Race, owned by Volvo Group and Volvo Car Group, to develop the next generation of offshore sailors.
Posted on 18 May
TIMEZERO by MaxSea extends navigation partnership with Clipper Race
TIMEZERO by MaxSea, has been named as the Official Navigation Software Supplier for Clipper Round the World Yacht Race. Returning for its second race partnership, TIMEZERO by MaxSea, has been named as the Official Navigation Software Supplier for the Clipper 2017-18 Round the World Yacht Race.
Posted on 18 May
North Technology buys Hall Spars from receivership
North Technology Group (NTG) has announced the acquisition of the Hall Spars business out of receivership. North Technology Group (NTG) has announced the acquisition of the Hall Spars business out of receivership. The Hall Spars US parent company announced in early 2017 that it would be closing the doors due to well publicized financial challenges. The acquisition covers Auckland and Brekens and Hall Spars will re-establish in Rhode Island
Posted on 9 May
SAP brings cutting-edge solutions to World Sailing
World Sailing announces SAP, a market leader in enterprise application software, as its Official Technology Partner Over the next four years, SAP will bring its cutting-edge, innovative solutions to World Sailing's World Cup Series of events. SAP will transform the events by improving performance on the water, reinventing the fan experience on the shoreline and at home, simplifying operations for sailors and coaches and supplying media with information and insights to deliver a more informed commentary.
Posted on 2 May
Announcing new B&G® V20 VHF Marine Radio
B&G® is pleased to announce the new V20, a Class D DSC Approved, NMEA 2000® compatible, VHF marine radio. B&G® is pleased to announce the new V20, a Class D DSC Approved, NMEA 2000® compatible, VHF marine radio. The V20 features a dot white matrix LCD screen with inverted light mode, four backlit mic buttons and an easier front-mount installation with snap on edge bezels.
Posted on 26 Apr
New addition to North Sail for Volvo Ocean 65 racing machines
Their sails have powered eight out of nine Volvo Ocean Race winners since 1989-90, with Steinlager 2. Instead of assembling cloth panels into a particular sail shape, the Volvo Ocean Race sails are composites. This means that 3Di material 'tapes' are laid in a specific arrangement, offering stable structure to the sail where it is needed most.
Posted on 24 Apr
Wichard announce a new carbon fibre – olivewood knife
Sailors know that at some time during racing or cruising a knife is a useful accessory to have handy. Sailors know that at some time during racing or cruising a knife is a useful accessory to have handy. There are multiple uses for a knife on board and a knife designed specifically for those tasks unique to sailing is the best option. Wichard have announced the availability of a purpose designed sailing knife that is a classic, elegant and modern design which blends aramid and carbon fibre
Posted on 7 Apr
Save on GO XSE during Simrad® Just GO! Promotion
You can fit boat with an all-in-one navigation product for cruising, fishing and keep more of your money where you want You can fit your boat with an all-in-one navigation product for cruising, fishing and watersports and keep more of your money where you want it – in your wallet.
Posted on 6 Apr
Navionics announces functionality available for Navico Brands
Navico have collaborated to make several new features available to customers using Navionics charts. Navico, a leading provider of marine electronics under the Lowrance, Simrad and B&G brands, and Navionics, the leader in content and location-based services for the recreational boating and outdoor markets, have collaborated to make several new features available to customers using Navionics charts. The NOS56 software update released for a wide range of new and existing models adds compatibility
Posted on 5 Apr
Marine Resources expands Boatbuilding Team with two key appointments
Marine Resources have recently expanded their in-house boatbuilding team, with the addition of two new key members. Leading leisure marine industry and luxury yacht recruitment specialists Marine Resources have recently expanded their in-house boatbuilding team, with the addition of two new key members.
Posted on 16 Mar