DAVE wrote:
Well Jim, that's an easy question. I moved from a 40ft aft cabin
silverton to the lagoon power 43 because of better fuel milage. Compared
to my old boat i went from 2 gallons a mile at 16 knots to about 1
gallon
a mile at 16 knots. I doubled my usable space for living and storage
while gaining a much more stable ride.
The only downside to a cat is the beam. At 21' 1" it is hard to find a
slip. For us we like to anchor out so the slip issue is personally not
a big issue. Boats are comprises.
Specifically on the lagoon, I would focus on either the 300 or 315 hp
engines. I feel the other two smaller engine options make the boat under
powered.
BRIAN responded:
I always did like the looks of this design. It has a certain 'traditional
look' even while it is modern.
DAVE wrote:
I wish there was more counter top space in the galley.
BRIAN responded:
I would think that anyone spending a considerable time on this vessel would
CERTAINLY wish for a considerable bigger galley space
DAVE wrote:
The engines are real tough to work on because of the limited amount
of space around them.
Dave Eldridge
BRIAN responded:
This 'space around the engines' is a real problem in multihulls. Those long
thin hulls with the engines sitting down in them is just plain unpleasant.
I'm working with a client at present that has owned a 57 sailing cat, and
supervised the building of a 55 foot power cat a couple of years ago. He is
now designing his own 56 foot power cat design. One of the important items to
consider is how to get those engines into a different orientation where they
are not buried down in the bilges of those thin hulls. The specific design is
not finalized yet, but the basic idea is to mount the engines up higher in
the
hulls and drive the horizontal propeller shaft set below the engines with a
fiber belt or chain drive unit as I've pitched for a number of years.
http://www.runningtideyachts.com/power/ Sorry this website presentation is
really dated, but I've gathered much more info on this belt/chain drive unit
concept, and it certainly looks as though we will fully develop this drive
unit, either in a fiber belt or chain form. I expect it to have a very wide
application potential, not only in catamarans.
Interestingly this owner spends lot of time on his vessels, even to the point
of living on them. So you can bet his saloon and galley will be very well
done. He is also well aware of building cost, so expect it to be reasonable
in
construction cost.
Brian ask:
Several years ago now (actually it may have been back quite some time when
this Lagoon 43 design was introduced, myself and a few others held a
discussion about the tendancy of this vessel to 'sneeze'...squirt water out
the front of the tunnel when encountering choppy conditions. That water would
be sprayed back over the topsides of the vessel creating a somewhat wet ride.
I did not see any such comment by DAVE, and wondered what his observations
might be??
We like the looks of the Lagoon 43 and 44 as well, so we're interested in
this thread. We're converting in the next year from a 39 foot aft-cabin
Ocean Alexander, and can't imagine moving to a bigger boat with a smaller
master stateroom, as virtually all the other cats on the market have. My
question is about the smaller engines on the Lagoon. We like to cruise at
10-12 knots, and I'm concerned that the bigger engines practically require
us to cruise at 16 knots or so, just to keep the diesels running at a speed
where they stay warmed up. I don't really understand the concept that the
boat would be "underpowered" with the 200 hp engines. Am I missing
something about how it moves in the water at lower speeds? We haven't had a
chance to spend any time on a powercat yet, so I'm afraid I don't know much
about their sea characteristics yet.
Bruce Clark
-----Original Message-----
From: power-catamaran-bounces@lists.samurai.com
[mailto:power-catamaran-bounces@lists.samurai.com] On Behalf Of brian eiland
Sent: Friday, April 02, 2010 4:27 PM
To: Power Catamaran List
Subject: [PCW] Lagoon 43 Powercat (was New member introduction)
DAVE wrote:
Well Jim, that's an easy question. I moved from a 40ft aft cabin
silverton to the lagoon power 43 because of better fuel milage.
Compared
to my old boat i went from 2 gallons a mile at 16 knots to about 1
gallon
a mile at 16 knots. I doubled my usable space for living and storage
while gaining a much more stable ride.
The only downside to a cat is the beam. At 21' 1" it is hard to find a
slip. For us we like to anchor out so the slip issue is personally not
a big issue. Boats are comprises.
Specifically on the lagoon, I would focus on either the 300 or 315 hp
engines. I feel the other two smaller engine options make the boat
under
powered.
BRIAN responded:
I always did like the looks of this design. It has a certain 'traditional
look' even while it is modern.
DAVE wrote:
I wish there was more counter top space in the galley.
BRIAN responded:
I would think that anyone spending a considerable time on this vessel would
CERTAINLY wish for a considerable bigger galley space
DAVE wrote:
The engines are real tough to work on because of the limited amount
of space around them.
Dave Eldridge
BRIAN responded:
This 'space around the engines' is a real problem in multihulls. Those long
thin hulls with the engines sitting down in them is just plain unpleasant.
I'm working with a client at present that has owned a 57 sailing cat, and
supervised the building of a 55 foot power cat a couple of years ago. He is
now designing his own 56 foot power cat design. One of the important items
to
consider is how to get those engines into a different orientation where they
are not buried down in the bilges of those thin hulls. The specific design
is
not finalized yet, but the basic idea is to mount the engines up higher in
the
hulls and drive the horizontal propeller shaft set below the engines with a
fiber belt or chain drive unit as I've pitched for a number of years.
http://www.runningtideyachts.com/power/ Sorry this website presentation
is
really dated, but I've gathered much more info on this belt/chain drive unit
concept, and it certainly looks as though we will fully develop this drive
unit, either in a fiber belt or chain form. I expect it to have a very wide
application potential, not only in catamarans.
Interestingly this owner spends lot of time on his vessels, even to the
point
of living on them. So you can bet his saloon and galley will be very well
done. He is also well aware of building cost, so expect it to be reasonable
in
construction cost.
Brian ask:
Several years ago now (actually it may have been back quite some time when
this Lagoon 43 design was introduced, myself and a few others held a
discussion about the tendancy of this vessel to 'sneeze'...squirt water out
the front of the tunnel when encountering choppy conditions. That water
would
be sprayed back over the topsides of the vessel creating a somewhat wet
ride.
I did not see any such comment by DAVE, and wondered what his observations
might be??
Power-Catamaran Mailing List
On Sat, Apr 3, 2010 at 5:02 PM, Bruce Clark brucerclark@gmail.com wrote:
I don't really understand the concept that the
boat would be "underpowered" with the 200 hp engines.
i think it all depends on whether it is a semi-planing hull and if so what
speed does it plane. if 10-12 is planing mode the bigger engines probably
keep you there at a lower fuel consumption.
john cummings
How does one calculate the "planing speed" of a cat? I know how to do it
for monohulls, but I don't think it translates to the physics of two hulls.
I would imagine that the net weight of the cat would need to be factored in
somehow, and I would guess that the shapes of the hulls would also be
important.
Bruce
-----Original Message-----
From: power-catamaran-bounces@lists.samurai.com
[mailto:power-catamaran-bounces@lists.samurai.com] On Behalf Of john
cummings
Sent: Sunday, April 04, 2010 5:06 AM
To: Power Catamaran List
Subject: Re: [PCW] Lagoon 43 Powercat (was New member introduction)
On Sat, Apr 3, 2010 at 5:02 PM, Bruce Clark brucerclark@gmail.com wrote:
I don't really understand the concept that the
boat would be "underpowered" with the 200 hp engines.
i think it all depends on whether it is a semi-planing hull and if so what
speed does it plane. if 10-12 is planing mode the bigger engines probably
keep you there at a lower fuel consumption.
john cummings
Power-Catamaran Mailing List
Depends on the hull shape. All out stepped asymmetrical racing cats have a
very high potential speed, and incorporate ground effect from the tunnel in
between, just add horsepower. Many cruising powercats have a displacement or
semi displacement hull form, with low wave making drag, not much horsepower
required to get them on top and hold them there, however they hit a hard wall
at upper 20 knot range. Most designs in the 40-45 ft. range with this hull
design run well at 7-8 knots or displacement speed, they are in the hole at
9-13 knots (not efficient) and on top 14-15 knots, with the happy speed
usually around 16-17 knots.
----- Original Message -----
From: Bruce Clarkmailto:brucerclark@gmail.com
To: 'Power Catamaran List'mailto:power-catamaran@lists.samurai.com
Sent: Sunday, April 04, 2010 3:46 PM
Subject: Re: [PCW] Lagoon 43 Powercat (was New member introduction)
How does one calculate the "planing speed" of a cat? I know how to do it
for monohulls, but I don't think it translates to the physics of two hulls.
I would imagine that the net weight of the cat would need to be factored in
somehow, and I would guess that the shapes of the hulls would also be
important.
Bruce
-----Original Message-----
From:
power-catamaran-bounces@lists.samurai.com<mailto:power-catamaran-bounces@list
s.samurai.com>
[mailto:power-catamaran-bounces@lists.samurai.com] On Behalf Of john
cummings
Sent: Sunday, April 04, 2010 5:06 AM
To: Power Catamaran List
Subject: Re: [PCW] Lagoon 43 Powercat (was New member introduction)
On Sat, Apr 3, 2010 at 5:02 PM, Bruce Clark
<brucerclark@gmail.commailto:brucerclark@gmail.com> wrote:
I don't really understand the concept that the
boat would be "underpowered" with the 200 hp engines.
i think it all depends on whether it is a semi-planing hull and if so what
speed does it plane. if 10-12 is planing mode the bigger engines probably
keep you there at a lower fuel consumption.
john cummings
Power-Catamaran Mailing List
Power-Catamaran Mailing List