Catamaran MotorSailer with DynaRig

BE
brian eiland
Thu, Mar 15, 2007 10:59 PM

MotorSailers, MotorSailors.....

They're just not a popular subject. Traditional motorsailers have always been
such a compromise, they have fallen into disfavor in the market, and in the
boating literature. The term has even had negative connotations for several
decades now. Should not today's boats be faster and better with new
materials,
light marine diesels, and better shapes? Should not this be the sensible
alternative, the common sense move up from the beloved family sailboat? When
trawler options are discussed, suggestions of boredom arise. A lifetime of
sail would be discarded, and what happens when the motor quits? Well,
hopefully it won't quit, but one can always sail home in a boat with sails on
it. For truly long range cruising and/or remote exploration, the motorsailer
can outshine both the sailing aux and the trawler types.

We need to modernize the motorsailer. The multihull plan-form holds great
promises to improve this breed. The long slender hulls of the catamaran type
vessel have proven themselves to be real efficient to push under both power &
sail. And not only are they efficient, but they can be pushed beyond the
traditional hull-length/speed limitations. Just what the modern motorsailer
needs, a far less compromising increase in both their sail & power
performance, that allows for long-range, and remote area capabilities. In
light airs, running one engine often is all that is needed to generate an
apparent wind that allows the sails work harder, and the combination can
provide much better results than either motoring or sailing alone,....sailing
synergy/harmony, the motor taking over in the lulls and the rig taking over
in
the puffs

If the subject interest you, you might have a look at my newly designed
DynaRig MotorSailer
http://www.runningtideyachts.com/dynarig/

Brian Eiland

beiland@usa.net
www.RunningTideYachts.com
distinctive expedition yachts

MotorSailers, MotorSailors..... They're just not a popular subject. Traditional motorsailers have always been such a compromise, they have fallen into disfavor in the market, and in the boating literature. The term has even had negative connotations for several decades now. Should not today's boats be faster and better with new materials, light marine diesels, and better shapes? Should not this be the sensible alternative, the common sense move up from the beloved family sailboat? When trawler options are discussed, suggestions of boredom arise. A lifetime of sail would be discarded, and what happens when the motor quits? Well, hopefully it won't quit, but one can always sail home in a boat with sails on it. For truly long range cruising and/or remote exploration, the motorsailer can outshine both the sailing aux and the trawler types. We need to modernize the motorsailer. The multihull plan-form holds great promises to improve this breed. The long slender hulls of the catamaran type vessel have proven themselves to be real efficient to push under both power & sail. And not only are they efficient, but they can be pushed beyond the traditional hull-length/speed limitations. Just what the modern motorsailer needs, a far less compromising increase in both their sail & power performance, that allows for long-range, and remote area capabilities. In light airs, running one engine often is all that is needed to generate an apparent wind that allows the sails work harder, and the combination can provide much better results than either motoring or sailing alone,....sailing synergy/harmony, the motor taking over in the lulls and the rig taking over in the puffs If the subject interest you, you might have a look at my newly designed DynaRig MotorSailer <http://www.runningtideyachts.com/dynarig/> Brian Eiland beiland@usa.net www.RunningTideYachts.com distinctive expedition yachts
GS
Grahame Shannon
Fri, Mar 16, 2007 1:51 AM

Hi Brian,

I must say I am very impressed by your Dynarig motorsailer design, Clearly
you have put a lot of thought into it.  My only reservations are about the
weight and windage when not in use, but you have obviously thought about
those issues.

I don't see why a Dynarig boat could not use conventional furling gear just
ahead of the mast. There would be quite a large number of sail control lines
which I assume could go down inside the mast, and I imagine the loadings
would not be too heavy.

Congratulations on your brilliant work. I hope you can get someone to build
one!

Kind Regards,
Grahame Shannon
Avia Design Group Inc.
2101 Philip Avenue
North Vancouver, BC
V7P 2W5 Canada

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4:51 PM

Hi Brian, I must say I am very impressed by your Dynarig motorsailer design, Clearly you have put a lot of thought into it. My only reservations are about the weight and windage when not in use, but you have obviously thought about those issues. I don't see why a Dynarig boat could not use conventional furling gear just ahead of the mast. There would be quite a large number of sail control lines which I assume could go down inside the mast, and I imagine the loadings would not be too heavy. Congratulations on your brilliant work. I hope you can get someone to build one! Kind Regards, Grahame Shannon Avia Design Group Inc. 2101 Philip Avenue North Vancouver, BC V7P 2W5 Canada -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.446 / Virus Database: 268.18.11/721 - Release Date: 13/03/2007 4:51 PM