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

Navigation

Panama Canal to Celebrate 100 Years

To commemorate its centennial, the Panama Canal will host a series of events August 14-15 in Panama City to highlight the impact of the waterway during the past century.

AIS Data for Emissions Reduction

With emissions reduction firmly on the industry’s agenda, studies show that carrying out ship emission calculations, based on AIS data, can offer significant benefits.

Hyundai Heavy Industries Develops HiCASS

Hyundai Heavy Industries Co., Ltd. (HHI) announced today that it developed Hyundai Intelligent Collision Avoidance Support System (HiCASS) for the first time in

Marine Materials

Rosneft to Monitor Marine Fauna in Northern Sea Route

OAO NK Rosneft will conduct marine fauna monitoring in the Northern Sea Route in 2014. The studies will be organized by the Arctic Research Center, a joint venture of Rosneft and ExxonMobil.

General Dynamics Launches Morgan County NextGen-911

General Dynamics Information Technology, a business unit of General Dynamics, has implemented a NextGen-911 emergency service solution for Morgan County, Ohio.

Wärtsilä's JV with CSSC to Expands Engines Range

Wärtsilä and China State Shipbuilding Corporation (CSSC) have signed an agreement to establish a joint venture for manufacturing medium and large bore medium speed diesel and dual-fuel engines.

 
 
Maritime Careers / Shipboard Positions Maritime Security Navigation Offshore Oil Pod Propulsion Port Authority Ship Electronics Shipbuilding / Vessel Construction Sonar Winch
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: 0.0998 sec (10 req/sec)