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

 

Sail-World.com : HAWC 11M building in Hong Kong

HAWC 11M building in Hong Kong

'HAWC 11M.'    Guy Nowell ©    Click Here to view large photo

And now for something completely different. Well, a little different, at any rate. Boat designers and naval architects are always looking for ways to increase speed and fuel efficiency. There’s a fairly simple equation that says the more boat there is in the water, the bigger the engine you need to push it along at a given speed. And big engines drink lots of fuel.

So take the boat out of the water on hydrofoils, or turn it into a hovercraft – or at least make it go fast enough get out of the water and into planing mode – and you’re going to save effort, and fuel. The question is always, how much grunt do need to get the thing up and going – in the case of a hovercraft, quite a lot!

So how about an aluminium catamaran that is projected to hit 45 kts when fully loaded with full fuel and 13 passengers, powered only by two 250hp outboards? The HAWC 11m is under construction right now at Wang Tak Shipyard in Hong Kong.

‘HAWC’ stands for Hydrofoil Assisted Water Craft, and the crux of the design is a lifting foil on or near the centre of balance of the boat, and smaller ‘pitch stability’ foils towards the stern. The hull is referred to as a ‘split deep vee’ – meaning in design terms that it is a monohull that’s been split in two and the two parts separated. The central tunnel has a curved ‘M’ cross-section, the curved part of which is designed to dissipate slamming when running through rough water. The boat is being built as a ‘demo’ for potential customers such as the Hong Kong Police, HK Marine Dept and HK Agriculture, Fisheries & Country Parks.

The design is specifically suited to Hong Kong’s choppy waters. The builders confidently believe that 'she will ride smoothly and at high speeds, and with a fuel economy that surpasses all vessels of a similar size and displacement weight currently in operation.'

HAWC 11M. Split deep vee monohull with M-section -  Guy Nowell ©?nid=81589   Click Here to view large photo


HAWC 11M. Central (main) lifting foil. -  Guy Nowell ©?nid=81589   Click Here to view large photo


HAWC 11M. Aft pitch stability foils visible. -  Guy Nowell ©?nid=81589   Click Here to view large photo




The technology and the design has been available since the mid-80s, but is still relatively unknown. ‘The numbers’ suggest that a hydrofoil-hybrid boat that doesn’t attempt to get out of the water completely will achieve very similar efficiencies to a ‘full’ hydrofoil design where reduction of drag is concerned, but will less initial power needed to get out of the water.

This is not all supposition: it has been done before, tried and tested. In 2006 and 2007 a similar boat, called the ‘Kodiak Project’, achieved a top speed of 44 kts and cruised at 31 kts, using only 64 litres/hr between the two 300hp outboards. Calculated comparisons with 13 boats of similar size, displacement, weight and power indicated a 38% improvement in efficiency. In 2008 the HAWC system was retro-fitted to a Zeta Cat design, in Vancouver. The 440hp diesels and the gearbox were unchanged, and the boat’s top speed increased from 26 kts to 37 kts.

The HAWC 11 in Hong Kong will be ready for sea trials very shortly. Her backers assure us that 'this boat is guaranteed to out-perform all existing vessels of the same size and weight.' We are also reassured to hear that the boat is built to DNV and HSC IMO standards, and is intended to be operational in up to sea state 6 – 15’ to 18’ waves – and will be able to run at full speed in 4’-5’ waves.

I hope I don’t spill my gin and tonic at the sea trial…

HAWC 11M. Off the top floor... -  Guy Nowell ©?nid=81589   Click Here to view large photo


HAWC 11M. ...and safely down to the ground. -  Guy Nowell ©?nid=81589   Click Here to view large photo


HAWC 11M. All foils and u/w profile clearly visible. -  Guy Nowell ©?nid=81589   Click Here to view large photo




by Guy Nowell, Powerboat-World.com

  

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

http://www.powerboat-world.com/index.cfm?nid=81589

4:19 AM Tue 22 Mar 2011 GMT






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


Power Boat News

Singapore Yacht Show – it’s a wrap. by Guy Nowell, Sail-World Asia, Hong Kong






Pontoon Boats are a hit with families and entertainers by Sanctuary Cove International Boat Show,










Glacier Bay returns to Australia, re-launching at SCIBS by Sanctuary Cove International Boat Show,








Singapore Yacht Show 2014. Boats to make your eyes pop. by Guy Nowell, Sail-World Asia, Singapore










Power to the people at Sanctuary Cove International Boat Show by Sanctuary Cove International Boat Show,


SCIBS VIP lounge back bigger and better in 2014 by Sanctuary Cove International Boat Show,




Singapore Yacht Show 2014. And another thing… by Guy Nowell, Sail-World Asia, Singapore


























Luxury Yacht Share Asia (LYSA) introduces fractional ownership to Asia
Humpback Whales - Non Lethal research
RYA Competent Crew Skills – Second edition now available
Mondo Marine invests in Chinese shipyard
Aqualuma partners with ASMEX 2014 for Welcome function
Kaohsiung to welcome the world for 1st Taiwan International Boat Show *Feature
Changed boating conditions for ski race on Clarence River
Royal Victoria Cup - Cable, Hockney and Shipley victorious
Channel 7 stage returns to Sanctuary Cove International Boat Show
Hainan Rendezvous: suffering from a hangover?
Palm Beach International Boat Show shows healthy attendance
Brisbane Tinnie & Tackle Show - this weekend!
Coastal infrastructure and species loss - Climate Change consequences *Feature
rescueME PLB1 – safety assured in one compact, light package *Feature
Japan's Antarctic whaling program harpooned
All Marine Spares hits the boat show trail in a trailer *Feature
Royal Victoria Cup to take place this weekend
Rowers and ferry masters encouraged to share waterways safely
Go crazy about whales in a special family fun day at the museum
New generation trawler boats - tradition with a twist
Arvor releases new Sportsfish range   
AIMEX focuses on commercial show in Asia   
Further Australian growth for Stabicraft   
Southport Yacht Club will host a free 'Discover Sailing Day'   
Melbourne Boat Show earlier this year - 12 to 16 June   
FinScan digital switching fitted to new rescue vessels   
Kids' Zone a drawcard at Brisbane Tinnie & Tackle Show   
Brisbane Tinnie & Tackle welcomes Engel as stage sponsor   
BIAV appoints new GM   
Trash to Treasure - A seafood story   
Amazing Whales – Evolution and survival opens tomorrow   
Maritime Alert - Dangerous conditions forecast for NSW boaters   
PWC riders brave South Island waters raise $93,000 for melanoma fight   
Solar1 Monte Carlo Cup to take place this July   
12 weeks til Melbourne Boat Show   
First deadline for SCIBS exhibitors looms March 24   
Paul Burt, boating guru, is the face of Sanctuary Cove Boat Show   
Marine Industry loses a loyal servant: Vale Gunter Bruckner   
Positive pass mark for new venue   
Couran Cove signs lease deal with Hope Island Marina   


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