This would be enough for me to stop sailing.

**Ex-SolentBoy** · 14-04-12, 09:39

http://www.john-shuttleworth.com/adastra.html

**sarabande** · 14-04-12, 09:46

you can bet the Chinese Navy architects have a copy of the lines. These new configurations may be as ugly as anything but are they better sea boats, with a more stable weapons platform ?

Anyway, if that ran you over in the Solent, you might stand a chance of it passing completely overhead.

**boomerangben** · 14-04-12, 11:58

Looks like it will be wet in a head sea, bloody uncomfortable in a cross sea and have a terrifying sound track of creaks and groans. When they say light weight and state of the art structural design together, I hear cracks and repairs. Hope I'm wrong

**GlennG** · 14-04-12, 13:20

Interesting there's three engines; two smaller ones in the outriggers.

32,000 litres of fuel tankage, max range 4000 miles, 8 litres per mile.

ostentatious
adjective
characterized by vulgar or pretentious display; designed to impress or attract notice

**aslabend** · 14-04-12, 13:35

Wow, John Shuttleworth has come a long way from writing "Eggs and Gammon" and "Dandilion and Burdock". Kudos to his second career.....

**Yacht Yogi** · 14-04-12, 15:02

The Royal Navy experimented with a larger version of that trimaran configuration called HMS Triton a couple of years ago. Presumably not a successful experiment. It is still around as a research vessel named MV Triton. I think the US Marines also took a look at it for littoral warfare in shallow waters. The Marines seem to have stayed with hovercraft and the Royal Navy with conventional monohulls.

Says enough really. It looks fabulous in a Buck Rogers kind of way but probably doesn't work with real waves. I can't help thinking of those capsized multihulls in last year's Round The Island race (I know they had sails and got blown over but it's the staying inverted bit that worries me).

**Woodlouse** · 14-04-12, 19:43

Originally Posted by Yacht Yogi

The Royal Navy experimented with a larger version of that trimaran configuration called HMS Triton a couple of years ago. Presumably not a successful experiment. It is still around as a research vessel named MV Triton. I think the US Marines also took a look at it for littoral warfare in shallow waters. The Marines seem to have stayed with hovercraft and the Royal Navy with conventional monohulls.

Says enough really. It looks fabulous in a Buck Rogers kind of way but probably doesn't work with real waves. I can't help thinking of those capsized multihulls in last year's Round The Island race (I know they had sails and got blown over but it's the staying inverted bit that worries me).

The HMS Triton I believe was not judged to be a success due to causing increased mal de mare amongst it's complement. This superyacht though looks like a wave piercing design, which has been tried and tested on boats such as Cable and Wireless and Earthrace (Ady Gil). I don't know how comfortable they were though in a sea.

What strikes me most about this boat is actually how small it is for 40 metres. I'll bet you get more living space in a conventional 25 metre boat.

**Bajansailor** · 14-04-12, 20:20

Yogi, do I detect a slight hint of prejudice here against trimarans?

Catamarans and trimarans are big business now, for all sorts of commercial applications.
The US Navy has embraced cats and trimarans most enthusiastically with their Littoral Combat Ships and Theatre Support Vessels -
http://www.austal.com/en/products-an...l-vessels.aspx

And here is an LCS coming out of the building shed -
http://www.austal.com/Resources/Prom...27439-128a.jpg

Austal have also proposed a trimaran configuration for a wind farm support vessel - http://www.austal.com/en/products-an...rt-vessel.aspx

And they have built a few very large trimarans as fast passenger ferries -
http://www.austal.com/Resources/Prom...9/IMG_8715.jpg

For more info about commercial trimarans - or 'stabilised monohulls', here is an excellent paper by Nigel Gee describing them -
http://media.bmt.org/bmt_media/resou...dMonohulls.pdf

**sarabande** · 14-04-12, 21:57

by chance I've found video of LCS 2 USS Independence, a functional support craft for the US Navy.

http://www.youtube.com/watch?v=FGykz...feature=fvwrel

And just look at th lack of wake !

**Woodlouse** · 15-04-12, 00:10

Originally Posted by sarabande

by chance I've found video of LCS 2 USS Independence, a functional support craft for the US Navy.

http://www.youtube.com/watch?v=FGykz...feature=fvwrel

And just look at th lack of wake !

Look how flat the water is...

Lets see it bashing into a F10.