wave piercing trimarans design

[bhk]

hi all

I’m a marine engineering cadet currently studying in the UK. My previous back ground is in mechanical engineering and basic boat construction and maintenance.

I have always had a great interest in the wave piercing hull design, but have found it impossible to gain any information or drawings for these.

This is my question, does anyone have any information / drawing for the latter? Could anyone help me with the design work on these, helping with the hydrodynamics and stability.

I’m new to marine architecture and have a limited understanding but I’m very keen to build on my knowledge and eventually produce a small prototype model and then full size.
The hope is to build around the 6 - 8m mark with a service speed of around 40-50knts using inboards with a drive of wither legs or jets and constructed from glass with a foam core reinforced with Kevlar.

Many thanks in advance
Kind regards

[Boston]

there is a really slick wave piercing design on u tube of all places
http://www.youtube.com/watch?v=dxJOJDGchTs

heres the embeded info but Im not sure if it will activate here
<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/dxJOJDGchTs&hl=en&fs=1"></param><param name="wmode" value="transparent"></param><param name="allowFullScreen" value="true"></param><embed src="http://www.youtube.com/v/dxJOJDGchTs&hl=en&fs=1" type="application/x-shockwave-flash" allowfullscreen="true" wmode="transparent" width="425" height="344"></embed></object>

the earthrace wave piercing animation is very cool
they seem to be kinda secretive about the actual vessel though

another cool thing about this thing is they built it out of hemp fiber
in an epoxy resin

good luck
and bring some scuba gear just in case
B

[lazeyjack]

look up Craig Loomes New Zealand
one of the worlds leaders, been at it for ages!
http://www.cld.co.nz/welcome.htm

[bhk]

hi guys
thanks for the reply's
i have alredy contacted CLD and diogenmarine before starting this thread with no reply as yet

i understand the pricipal of the design its the paticulars where i need help, how little boucay should the bow have? should the vessle be trimedd to aid with 'digging in', what type of hull profile is aft, i have seen both flat bottom and v's.

from studying pictures i have came up the basic dimensions of around 7m length whould work out at aroun a beam for the center hull of 1.5m

i have included some links back to photo on the craig loomes and diogen marine page to give a idea of what im aiming for
many thanks
sean

http://www.cld.co.nz/usptlarge3.htm
http://www.cld.co.nz/usptlarge2.htm
http://www.cld.co.nz/usptlarge1.htm
http://www.diogenemarine.com/pictures/8_2.jpg
http://www.diogenemarine.com/pictures/8_3.jpg

[bhk]

hi all
i have been working on some hull profiles today, plan to start prototyping one soon, received materials today, will post some pictures in the upcoming days

regards
Sean