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Old 22-11-2009, 14:56   #1
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Stabilized Monohull

This is my latest design based on my current boat which
is 39 ft X 8ft-22ft.
It is not really a trimaran as such, though it does have three hulls. I am calling it a stabilized monohull until I come up with a better name for it.
Any suggestions?

What I am trying to do is to introduce a fast displacement hull 15 knots -20 knots using low power (2 x 100hp)
41ftX 15ft (Mono berth)
Bridgedeck above water 2ft 6inches (800mm)
Draft of 300 mm or 1ft
Weight 6tonne
Motors 2 X 100 hp four stroke outboards
OR two 100 hp diesels
Cruising speed of 15 knots maximum of 20 knots
6mm aluminium underwater, 4mm elsewhere
Large open plan, above water living area
One full headroom double stateroomm and one full headroom double decker bedroom.
Upstairs galley Fridge/ freezer
Gas oven and 4 burners
Microwave
Wet bar
Pantry
Large shower
Separate toilet
Full width aft deck

Any comments or feedback?
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Old 22-11-2009, 15:08   #2
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So similar to this, but with more accomodations?



They call it a wave-piercing trimaran.


Or the Shuttleworth P41 below?




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Old 22-11-2009, 15:30   #3
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Looks a bit like this one but smaller.

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Old 22-11-2009, 15:34   #4
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Or this one but bigger.
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Old 22-11-2009, 16:43   #5
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Why such a sharp kick up in the rocker down aft?

Wouldnt the work done on vessels such as this


Austal Next Generation - Austal
and the shuttleworth above indicate that it should almost be flat?

Also any reason for the 41 ft limitation?

Would same accom. on a 50 ft hull give better fuel economy or allow smaller engines?

Another shape from This Thread

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Old 22-11-2009, 18:03   #6
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Some other versions a 50 ft X 15ft and a 45 Ft X23Ft

The slope of the stern reduces drag (stern wave) under 10 knots of speed. (cruising)
Over 10 knots, you are right it would be better to contine flat.
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Old 23-11-2009, 07:59   #7
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I'm a bit interested...I've been kicking around some thoughts about outriggers and their design.
I'll be curious to see more on this subject.
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Old 23-11-2009, 18:11   #8
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have you seen the boat design forum... just google it.
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Old 24-11-2009, 18:23   #9
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There was something similar for sale on Yachtworld for a while. It looked pretty interesting. If I recall correctly it was around 29' in length and maybe around 10' beam? It had a large central hull, then the deck flared out and back down to two small amas. It had an A-frame style mast as well. I think it was in CT but can't find it now. It must have sold.
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