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Old 26-08-2015, 07:59   #1
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Brand new 100 foot Maxi Trimaran MACIF and its first sail

Brand new MACIF TRIMARAN first sail… Skipper Francois Gabart ready for Transat Jacques Vabre 2015 ?

Francois Gabart was IMOCA 60/Tornado/F18/FP sailor… and is now in his preperations for participating in the 2015 Transat Jacques Vabre (start on 25th October 2015)… on the brand new maxi Macif Trimaran (LxWxH: 30x23x36 metres) designed by VPLP. - Its ready !

From 3D CAD...



... to first TEST sailing last weekend.



More footages and first video of test sailing on 22nd August 2015 here.

It will be exiting to see this new racer moving in rough waters and heavy winds. Wondering about, if the MACIF racing team will extend the boat to foiling like Gitana Team is doing since couple of weeks on a 70 footer (as test boat for building a 110 foot Maxi Trimaran).
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Old 26-08-2015, 08:56   #2
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Re: Brand new 100 foot Maxi Trimaran MACIF and its first sail

Indeed it will be interesting to see how the foils get employed in ocean going multis and monos.

Vide recent IMOCAs - all with foils! Expect plenty of damage ... to catch the attention of the crowds ;-)

Cheers,
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Old 26-08-2015, 09:26   #3
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Re: Brand new 100 foot Maxi Trimaran MACIF and its first sail

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Indeed it will be interesting to see how the foils get employed in ocean going multis and monos.
I think foils make sense for multihulls... because of the geometry. All the attempts with canting keels or even horizontal keel bombs on monohulls looks for me like a "bad attempt" to pretend something what cant be (constructively).





I am not a friend of engineering following the motto: "What is possible can be done". Or as we like to say: For an engineer nothing is too difficult to do. So looks the design, e.g. the IMOCA Safran built in 2014.


I prefer the method "simplyfing your life"... same on boats. More simple the solutoin, more easy going.

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Vide recent IMOCAs - all with foils! Expect plenty of damage ... to catch the attention of the crowds ;-)
Yeah.. they look spectacularly... lots of action for the eyes. I really hate these "mega sized surf boards" so it looks for me.... and their attempts to become technically a system of ballast and balance, which one easily can realize on a multihull/trimaran.

Why it needs a "flying keel" ? Its like "a monohull want imitate a multihull". Does that make sense ?


For prototyping as realized with "SpeedDream" it might be an interesting playground for boat builder, engineers, sail makers...


The most natural approach to nature for me is a multihull. Look at the Polynesians, they had been smart to build Proas. Why ? As it makes sense to take an outrigger as ballast instead a deep and heavy keel bomb (Rec.: A trimaran is nothing else than glued together two Proas.)

I'd prefer to sail a Racing Proa instead of an IMOCA :-)


... as already did Multihull designer Nick Newick in the 60th for Skipper Tom Follet who participated in 1968 for the OSTAR (Observer's Singlehanded Trans-Atlantic Race) from Plymouth, England to Newport, Rhode Island on Nick's two masted proa Cheers.


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Old 26-08-2015, 17:17   #4
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Re: Brand new 100 foot Maxi Trimaran MACIF and its first sail

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(...)

Look at the Polynesians, they had been smart to build Proas. Why ? As it makes sense to take an outrigger as ballast instead a deep and heavy keel bomb (...)

The proas I have seen in Polynesia did not use their amas as ballast.

We must just wait and see. Who knows, perhaps monos with stabilising foils will do away with ballast and again be faster than multis?

After all, the fastest boat around is the moth, which happens to be an unballasted foiling MONO.

We must only sit watch and avoid getting too hot on the number of hulls. Perhaps other factors will prevail when we have the technology to build whatever we can dream up.

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Old 28-08-2015, 15:38   #5
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Re: Brand new 100 foot Maxi Trimaran MACIF and its first sail

Foiling Moths are fast, but they're certainly not the fastest boats around.


Anyway, Moths and other dinghies are small enough and light enough with small enough sailplans that they can get away with using their crews as ballast. This doesn't scale up though. Big mono's need ballast to generate righting moment.
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Old 28-08-2015, 17:00   #6
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Re: Brand new 100 foot Maxi Trimaran MACIF and its first sail

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Foiling Moths are fast, but they're certainly not the fastest boats around.


Anyway, Moths and other dinghies are small enough and light enough with small enough sailplans that they can get away with using their crews as ballast. This doesn't scale up though. Big mono's need ballast to generate righting moment.
When they are pitched against other boats they are considered the fastest. Look at popular mixed fleet yardsticks.

I am 100% with you re crew as ballast. Look at how IMOCA foils are deployed to see why they are believed to be a step towards (maybe oneday) a ballast-less ocean racing dinghy (60 feet long at that too).

A hydrofoil can be used to lift the whole thing up and off BUT in this case we are talking foils that are used not to lift the whole boat but only the lee side of it - generating an equivalent of ballast (on the opposite side).

It does not matter "" to the boat whether you push on the high side or lift the low side of one - in each case you will (hopefully) achieve going more vertical with more SA exposed to the driving force. Still, without the ballast and with the foil we end up with the lighter boat = we may/will sail faster.

Needless to say, going more vertical and faster WILL require that at a point the whole boat must get lifted (on even more foils) - otherwise the drag (hydro) will slow you down vs. those boats that are sailing out of the water.

So to sum up, there are foils and then there are foils. The ones on IMOCAs are not like when we think the Hydroptere. But there will be a convergence as one can't go faster without foiling AC72 style. Mono or multi.

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Old 22-09-2015, 21:03   #7
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Re: Brand new 100 foot Maxi Trimaran MACIF and its first sail

Re: Foiling Moths

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When they are pitched against other boats they are considered the fastest. -----
Perhaps you mean other monohulls their size. Otherwise they would hold the record for speed under sail.
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Old 24-09-2015, 18:46   #8
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Re: Brand new 100 foot Maxi Trimaran MACIF and its first sail

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We must only sit watch and avoid getting too hot on the number of hulls. Perhaps other factors will prevail when we have the technology to build whatever we can dream up.
BarnaK, so long we sailors and multihull affectionados do not become what we see within the motor boaters, I dont worry... :-)



At least it is good to know, that we could give it a try with 4 hulls... :-) Ever heard of a Quadrimaran ??? :-)

I like the decks layout of this 105 Footer... a great party boat of only 180 tons ! :-)


It was a military experimental vehicel for US Navy designed by Lockeed Martin for 30-plus knots in wave heights of up to 12 feet... and offered for sales at 180 THousand US dollars. :-)

Not enough, a Pentamaran (5 hulls) was built already... :-) with the M80 Stiletto :-)

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