Powerboat-World.com
 
 
News Home Video Gallery Newsletters Features FishingBoating Photo Gallery Sail-World Australia Australian Cruising
Sail-World Australia Australian Cruising MarineBusiness-World

 

Sail-World.com : New gyro stabilisers that won't rock the boat

New gyro stabilisers that won't rock the boat

'New gyros were installed under the aft cockpit to level the ride without adding to drag.'    Martin Flory    Click Here to view large photo

You spend all this money refitting a superyacht and it still rolls like a drunken sailor… it’s enough to make you sick. Literally.

In the case of MY Banyan, a 31-metre Palmer Johnson cruiser that was built in 1980 but extended, repowered and refurbished in 2009, help was at hand in the form of twin M7000A Seakeeper gyros.

The vessel can now travel in bigger seas to remote anchorages for her owner and charter guests, and is more stable at anchor.

The owner was very conscious of ambient noise onboard so the new system needed to be quiet. Banyan's twin 33 kW gensets serve well but amperage draw needed to be conservative.

'Hydrodynamics were a big issue for Captain Andrew Grego, having gone to the trouble of extending the hull by 4.3 metres to gain speed and fuel efficiency. With 875hp C18 CAT turbo diesel pushing top speeds of 22 knots, and 14.5 knots at cruise, he didn't want anything below the waterline that could reduce the efficiency or alter the boat's handling.

'Seakeeper required just a simple wire run. It's almost no amperage draw on the boat at all when the gyros are spooled up,' he said. 'Everything else on Banyan was first-rate technology. We thought the Seakeeper gyros provided more modern technology than a fin system.'

The two Seakeeper M7000A gyros combined produce an impressive 14,000 newton meter seconds of angular momentum, with each using a flywheel operating inside a vacuum. This aerospace-inspired technology creates powerful righting forces, whether a craft is underway, at low speed or at anchor.

One nagging problem from Banyan's extension was that the boat had more buoyancy aft than desired. Installing the Seakeeper units under the aft cockpit created an additional value by helping level the yacht.

'After a run to the British Virgin Islands it was obvious the gyros definitely make a difference,' Capt Grego said. 'At anchor, the system dampens roll by 73%, which is pretty considerable, and cruised 57 hours straight in 2.7 to 3.6 metre swells the entire way, and it was comfortable.

'I definitely see a trend toward more vessels, whether new builds or retrofits, opting for zero-speed stabilisation.'

Accommodating up to eight guests, Banyan cruises the Bahamas, Caribbean, U.S. East Coast, Newfoundland and Nova Scotia. The completely refurbished yacht includes a new cockpit, lazarette storage area and BBQ.

It offers an extensive array of electronics and entertainment in a luxurious setting, as well as snorkeling and fishing gear, Vespas and water toys.

Yacht Banyan website




by Mark Rothfield

  

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

http://www.powerboat-world.com/index.cfm?nid=87634

5:57 PM Tue 23 Aug 2011 GMT






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


Power Boat News



Dangerous conditions forecast for NSW boaters by Roads and Maritime Services,










Abbot Point onshore disposal by Great Barrier Reef Marine Park Authority,










Great Barrier Reef plan released for comment by Queensland Minister for Environment,










Brisbane Boat Show begins *Feature by Jeni Bone,


































Mediterranean Grand Prix 2014 - Wins for Victory and Chaudron
Mediterranean Grand Prix, UIM-ABP Tour: Pons claims Runabout GP1 win
Mediterranean Grand Prix - Al Zaffain and Bin Hendi win race 1
Court judgement a stark reminder about towing safety
Australian Offshore Superboat 2014 - Superboats ready for Redcliffe
Southport Yacht Club’s annual Sail Past and Blessing of Fleet Ceremony
Gosport Grand Prix of the Sea finale to decide P1 champions
Camper & Nicholsons Yachts presents the Sagitta 42
GT15 and GT30 European Championships - Jelf takes to the podium twice
Marine Rescue crew saves cruiser in trouble in rough conditions
XCAT Series gets set to conquer another continent in 2015
Dangerous conditions for boaters on most of NSW coast
2014 Mandurah Boat Show - Third largest boat show in Australia
2014 Gold Coast International Marine Expo - Eye on the big picture
Mediterranean Grand Prix - Powerboat racing heavyweights head to Ibiza
Mediterranean Grand Prix - World Aquabike stars all set
Antarctic sea-level rising faster than global rate
Powerboat champions gear up for Honda RYA Youth RIB National final
Andrew Scott joins Superior as General Manager *Feature
2014 Gold Coast International Marine Expo - Fastest Jet Ski ever built
Best Birthday Party ever at Southport Yacht Club! *Feature   
‘Hall of Fame’ status for Empire Marina *Feature   
Girl power all set for Nottingham powerboat racing action   
Cowes to Torquay Race 2014 - Intense activity in preparation   
Fort Lauderdale International Boat Show - 13 things to See and do   
Australian Offshore Superboat Champ - 15 Superboats in Coffs Harbour   
European première for Belize 54 Daybridge at Cannes Yachting Festival   
‘Fish Friendly’ accreditation for Sanctuary Cove Marina   
Plethora of Powerboat racing action this weekend   
Vicsail Boat show Open Day at Rushcutters Bay   
Marine15 - prospectus available online now + VIDEO *Feature   
Southport Yacht Club achieves Clean Marina certification + VIDEO *Feature   
Port Kembla Volunteers bring in 75 metre monster from 5nm offshore   
Gold Coast Int'l Marine Expo - Make every moment one to remember   
Dangerous conditions for boaters from Queensland border to Sydney   
4x4 Outdoors Show and Fishing and Boating Expo - Busy opening day   
Summerland 40 LR named Boat of the Year   
More new boats brand Brisbane Boat Show as a spectacular showcase   
Xiamen Int'l Boat Show 2014 moving to a new home   
Yamaha inspires students to succeed   


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/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 PBW
LocalAds   DE  ES  FR  IT