Nortek Dopler Velocity Log Aids Volvo Ocean Race Entrant

Press Release
Thursday, May 24, 2012

Nortek collaborated with Puma Ocean Racing to fit a modified compact Doppler Velocity Log to PUMA’s 'Mar Mostro' Volvo Ocean Race competitor

“The collaboration between Nortek and the entire PUMA team has resulted in an tool that provides unique information to the sailing crew.  They can now measure leeway, a first in sailing, and use it to measure ocean currents much more precisely than ever before,” said Atle Lohrmann, CTO of Nortek.

“This is the biggest advancement in sailing instrumentation since the invention of the GPS,” said Hopkins, who runs performance testing for PUMA and worked with Nortek on the project. “Nortek adapted their new DVL technology to our sailing performance needs, to measure very high speeds along the boat's track and very low speeds across it. With Nortek's history of deploying instruments on buoys in hostile Arctic conditions, we knew that we could trust the Nortek DVL in a race around the world.”

Leeway is the sideways skidding angle a boat makes as it sails forward. Leeway can be changed on a Volvo Open 70 yacht by adjusting the daggerboard immersion and canting the keel. The adjustable daggeboards and keel act like wings underwater to counteract the force of the sails. The crew relies on Nortek DVL leeway measurements to optimize PUMA's Mar Mostro performance at all times, providing the core data upon which every other performance measurement is based.

The Nortek DVL uses acoustic techniques to measure water velocity along each of the four beams.  The sensor is mounted in the bottom of the lead bulb of the keel. The acoustic beams are oriented forward, aft and abeam.  Data from each beam is streamed to the on board computer which also receives data from the inertial motion sensor and the keel cant angle sensor. Velocity and orientation measurements are then used to output true forward boat speed and leeway. Real time currents can be directly estimated by differencing the GPS boat speed over ground and the boat speed through the water.


 

Maritime Reporter July 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Navigation

Bulk Carrier Detained; Two Crew Convicted

A Hong Kong flagged vessel was detained in Queensland following a Port State Control (PSC) inspection conducted by the Australian Maritime Safety Authority (AMSA)

Coast Guard Preps for Arctic Research

A team of scientists from the U.S. Coast Guard (USCG) Research and Development Center (RDC) will depart from Seward, Alaska, for a technology evaluation in the

Raytheon Anschütz Innovations to Debut at SMM

German navigation system manufacturer Raytheon Anschütz announced the launch of navigation system innovations as well as improvements to existing technologies for this year’s SMM.

Marine Materials

Citigroup Seeks British Court Backing on China Metals Claims

Citigroup Inc said on Friday it has started proceedings in commercial court in London to enforce its rights over $285 million of financing at two ports in China,

Jinhai Heavy Industry Secures Another Invention Patent

Jinhai Heavy Industry of China has received patent rights for its large ship superstructure hoisting method after a state intellectual property review. The patent rights is for twenty years.

Messer's CEO Norville Announces Retirement

Bill Heller to assume the position as Messer Cuttings Systems’ President and CEO Gary Norville started at Messer Cuttings Systems Inc. in September 1980 selling and installing cutting machines.

Yachts

Fraser Yachts' 5th Sale in 10 days

Fraser Yachts announced this morning its fifth yacht sale in just ten days. Whilst the summer period is traditionally a quieter time for yacht sales 2014 seems

Regulations Threaten Superyacht Innovation

To increase innovation within the superyacht industry, designers need to work with flag states, classification societies and naval architects to ensure regulations are workable, as said by experts.

Homecoming Scotland 2014 Fireball Championships

Lerwick Harbour is ready for an exciting week of sailing with the 2014 Fireball European Championships taking place at the port next week. As a warm-up to the main event,

 
 
Maritime Security Maritime Standards Offshore Oil Pipelines Pod Propulsion Port Authority Salvage Ship Repair Ship Simulators Shipbuilding / Vessel Construction
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.0849 sec (12 req/sec)