Subject: Re: [harryproa] Re: Tons of questions
From: "Gardner Pomper" <gardner@networknow.org>
Date: 3/31/2008, 2:16 PM
To: harryproa@yahoogroups.com.au
Reply-to:
harryproa@yahoogroups.com.au

That sounds really exciting. Any chance I can get some sketches or renderings? I am particularly interested on how you keep the windage down and still have visibility from the help to windward.

- Gardner

On Mon, Mar 31, 2008 at 2:09 PM, Tim Barker <clairebarker5@bigpond.com.au> wrote:

--- In harryproa@yahoogroups.com.au, "gardner.pomper" <gardner@...>
wrote:I had a look at the Maine cat ,looks very nice.
To put the Liveaboard in perspective, the main saloon is roughly 26
x10.5' total with 16 x 10.5 full standing headroom the beds and toilet
will be utilizing the sloping cabin ends as much as possible so as to
minimise wastage of full headroom space which still means heaps of
room and at the end of the day whats going to sail better a 30ft cat
or a 50ft proa that only costs as much to build as the cat (maybe
slight exageration).
cheers Tim
>
> I am very curious about this design. If you are at all familiar with
> the Maine Cat 30, the best feature is that it has an open bridgedeck
> that is 8x11'. You spend all your time above. The only reason you go
> below decks is the head, the galley and the bunks. Instead of an
> enclosed salon, it has plastics that zip down, protecting you from the
> weather when you need it, but being completely open most of the time.
> I love that feel. There is a hardtop, but windage is kept down because
> you usually have the plastics open in the tropics. Just close them for
> rain or heavy seas.
>
> If you go here: http://www.mecat.com/indexsail.htm and click on
> MECAT30 on the left, you will see what I mean.
>
> I feel like the proa has that potential. I am wrestling with trying to
> figure out how to go from the Visionarry layout to an open bridgedeck
> layout. I don't want a high walled saloon with all the windage, but I
> also don't want to sleep and use the head out in the open.
>
> - Gardner
>
> --- In harryproa@yahoogroups.com.au, "Tim Barker" <clairebarker5@>
> wrote:
> >
> > --- In harryproa@yahoogroups.com.au, "gardner.pomper" <gardner@>
wrote:
> >
> > Hi Gardener
> > Im the one Robs refering to re the family of four liveaboard.For us
> > it wasnt so much a question of carrying capacity as living space for
> > your dollar. With the proa design within reason you can enclose or
> > make available a fair amount of space and the quality of the space
> > seems to be greater than on a comparable cat ,this in reference to the
> > separation of the sailing/living areas.
> >
> > The whole philosophy behind the initial approach to Rob was for a
> > craft where the hulls were just that hulls, not living space, no need
> > to line them ,whatever would fit in them fine but to resist the
> > temptation at all costs to "add just a bit" more room below.
> >
> > We could put some sleeping accom below, the ww hulls wide enough but
> > the minuite you do that(and after seeing the space i was tempted to )
> > youve just pushed the snowball off the edge and its rolling down hill
> > getting bigger heavier and more complex. Keep it simple and on one
> > level and as i said before no lining,no hiding piping/cabling no doors
> > ,no windows just tankage and storage in the ww hull = a quicker
> > cheaper build, and for me thats a biggie .
> >
> > Having said that add a bit more time and money (probably not that
> > much) and you can fit out the hull for sleeping but at the cost of
> > living space above. But for us here in the tropics it was about
> > haveing an open plan where the lines between the saloon area and the
> > tramp/ deck area blurred and with the addition of shade became one
> > large living area.
> >
> > Plus having the scooner rig in the lw hull allows for a couple of
> > reasonable single sleepers and or storage.
> >
> > I think this design could be a lot of things to a lot of people and
> > maybe addresses a lot of the percieved space limitations continually
> > thrown up in cat/ proa comparisons .
> >
> > Cheers Tim
> > >
> > > Hi,
> > >
> > > I got the renderings of the charter version. In that message, you
> > > mentioned that you were doing a 50' version for a family of 4
> > > liveaboard. I think that sounds very much what I have in mind. The
> > > Visionarry is also considered a 50', correct? Because the payload
> > > capacity there is aproximately what I think I need, although I have
> > > not added up the exact weights of a stove/oven and
fridge/freezer. If
> > > there is anything you can send me on that, it would be great. We
> > > travel pretty light, in that we has fun on a 30' cat with a 2000lb
> > > payload, so I think a 3700-4000 lb payload would be ok with us.
> > >
> > > Essentially, I have questions on being able to afford the larger
> > > version, and we will be just a couple, with (hopefully) many guests,
> > > 2-4 at a time. I would like to be able to singlehand and the
schooner
> > > rig concerns me for that.
> > >
> > > Back to general questions:
> > >
> > > Has something been written up on all the actions to be performed
when
> > > shunting? I have seen the video of the elementary, but in a larger
> > > version (Visonarry, or equivalent), how exactly are the rudders
> > > switch? Do you have to "switch" the wheels, or just walk around
to the
> > > otherh side and start using the 2nd wheel? What about
motorsailing? I
> > > know it has been mentioned that you don't, but the Intracoastal
on the
> > > east coast of the US has many areas where you can sail, interspersed
> > > with short switchbacks that make it difficult. We have always
liked to
> > > keep the sails up when when have to suffer through these.
> > >
> > > I am also confused about how the lines run to the mast. With the
mast
> > > rotating 360 degrees, I would think that the lines just wind up
around
> > > the mast. Is there just a single "boom sheet" for each direction you
> > > sail? The halyards tie off to the boom or mast?
> > >
> > > Thanks very much for all the time you are taking to answer
questions.
> > > I had looked a proas before but until I saw your designs I never
took
> > > them seriously. Now they look REALLY good.
> > >
> > > - Gardner
> > >
> > > --- In harryproa@yahoogroups.com.au, "Rob Denney" <harryproa@>
wrote:
> > > >
> > > > G'day,
> > > >
> > > >
> > > > On Mon, Mar 31, 2008 at 9:11 PM, gardner.pomper <gardner@> wrote:
> > > >
> > > > > Thanks for the quick reply. Let me give you a brief background
> > to put
> > > > > my questions into context.
> > > >
> > > > snip
> > > > >
> > > > > When I came across the harryproa, the Visionarry seems like
> it has
> > > > > enough payload capacity for a cruising couple/liveaboard
> (although
> > > > > more is better). We are not adventurers; we are looking for a
> > coastal
> > > > > cruiser/island hopper for North and South America and the
> > caribbean.
> > > > > So, my questions here are primarily focused on Visionarry.
> > > > >
> > > > > - I am assuming the empty weight is completely empty? Does it
> > include
> > > > > "built ins" like the stove, fridge, batteries? What about the
> > sails?
> > > > > (Mast is included, hopefully). What about engines?
> > > >
> > > > Empty weight includes everything required to go for a sail except
> > > > safety gear. No built ins or motors, but mast sails, boom
> rudders etc.
> > > > >
> > > > > - I can't picture what the saloon is really like. Do you have
> > any 2D
> > > > > layout drawings (like for the harryproa) that I can look at? We
> > > really
> > > > > loved the 8x11' open bridgedeck on the Maine Cat, and I am
> > concerned
> > > > > that you can't walk from the galley to the wheel without
> > dropping the
> > > > > table in the saloon. I am thinking about carving a simple model
> > > out of
> > > > > balsa wood to get the dimensions in my head.
> > > >
> > > > The saloon in Rare Bird is a bit cramped, but does the job. The
> table
> > > > does not prevent access to the wheel. I will forward the
> dimensions.
> > > > >
> > > > > - Can a stove with an oven be fitted? This was almost a deal
> > breaker
> > > > > on the Maine Cat, as the designer did not want to add one,
but he
> > > > > managed and the people who know the boats say it was one of the
> > best
> > > > > additions.
> > > >
> > > > No problem.
> > > > >
> > > > > - What about storage? Other than the cabinets along the hull
> in the
> > > > > galley, where do you put everything?
> > > >
> > > > Visionarry was not designed to be a live aboard, or even an
extended
> > > > cruiser. Rare Bird was modified to make it the latter, but it
does
> > > > not have huge amounts of storage space for living aboard.
This is a
> > > > good way of keeping the weight down, but won't impress your wife!
> > > > There is huge amounts of space in the lee hull but this is not
> > > > readily accessible. There are layout options to increase the
> storage
> > > > space, which I am happy to discuss, but if you want all the
comforts
> > > > of home and performance, then the bigger boat is a better bet..
> > > > >
> > > > > - My wife is concerned about the loss of privacy between a proa
> > and a
> > > > > cat. I have seen you mention a charter proa you have
> designed. Are
> > > > > sketches available for that? What do you expect the relative
> build
> > > > > cost to be between teh Visionarry and the charter? Double?
> > > >
> > > > It should be closer to half for the basic structure and fit out.
> The
> > > > build method is quicker, the materials cheaper (although there are
> > > > more of them) and it will be built in a low labour location.
> The fit
> > > > out of the saloon and ww hull is also simpler and quicker. The
> > > > cabins are as private as they are on a cat, but the ones in the ww
> > > > hull are much more user friendly with walk around beds, more floor
> > > > space, better light and ventilation and at the same level as the
> > > > bridgedeck, with easier access to it.
> > > > >
> > > > > I have seen you offer to email sketches on other groups. If
> you are
> > > > > willing to, my email is gardner@
> > > >
> > > > Will do. Anyone else wanting them, let me know. They are not of
> > > > particularly high standard as they are for discussion purposes
only,
> > > > but will give you an idea of what is possible. They will be
on the
> > > > web page real soon now ........
> > > > >
> > > > > Now I am off to book a trip to Maine <grin> to check out the
> > boat in
> > > > > Rock Harbor. Hopefully you will hear back from me in Sept as to
> > > how it
> > > > > went.
> > > >
> > > > Say hello to George for me (perhaps after you have asked all your
> > > > questions, in case he still thinks we tried to rip him off and
sends
> > > > you packing ;-)) and please take some photos and report back here.
> > > > >
> > > > > - What is the mast height off the water?
> > > >
> > > > 18m/60', although the charter boat will be a schooner rig so a
> > > little lower.
> > > >
> > > > regards,
> > > >
> > > > Rob
> > > > >
> > > > > --- In harryproa@yahoogroups.com.au, "Rob Denney" <harryproa@>
> > wrote:
> > > > > >
> > > > > > G'day,
> > > > > >
> > > > > > Welcome to the forum. Thanks for the questions, please keep
> them
> > > > > > coming. My answers follow your questions.
> > > > > >
> > > > > > On Mon, Mar 31, 2008 at 10:41 AM, gardner.pomper <gardner@>
> > wrote:
> > > > > >
> > > > > > > Hi,
> > > > > > >
> > > > > > > I have been searching the net for everything I can find
> on the
> > > > > > > harryproas. They look VERY interesting, but there is very
> > > little hard
> > > > > > > info, so I thought this group might be the best place to
> start.
> > > > > > >
> > > > > > > I think that I am most interested in Visionarry,
although it
> > > might be
> > > > > > > a bit above my price range, but let me start with some
> general
> > > > > > > questions (if i put all my questions in, the post would be
> > > too long
> > > > > > > for anyone to read).
> > > > > > >
> > > > > > > I am curious about the rotating mast. How susceptible is
> > that to
> > > > > > > binding, or sea salt crusting, etc? If you are subject to
> > > alot of sea
> > > > > > > spray and have limited fresh water, what is the maintenance
> > > required?
> > > > > >
> > > > > > Very little. The bearings are plastic outer shells and
> > > epoxy/graphite
> > > > > > inner shells. Water cannot get into them as there is a boot
> > around
> > > > > > the mast covering the top one. If any salt (or grit) did
get in
> > > > > > there, it would probably become embedded in the plastic so no
> > harm
> > > > > > would be done to the mast.
> > > > > > >
> > > > > > > Again with the mast.. none of the harryproas seem to
have any
> > > safety
> > > > > > > equipment to keep you on the boat for when you need to reef
> > > in heavy
> > > > > > > seas. THat leeward hull looks pretty narrow.
> > > > > >
> > > > > > The intention is to do all mast work from the bridge deck.
> There
> > > > > > should be no need to get on the lee hull deck at all.
> > > > > > >
> > > > > > > I am not clear on the position of the mast when you reef.
> Is it
> > > > > > > pointing perpendicular to the proa? You can't reach it
then.
> > > Or are
> > > > > > > you supposed to turn the boat into the wind, like a
> > "normal" cat?
> > > > > > > Doesn't that take the risk of the wind getting behind the
> > > sail and
> > > > > > > then the leeward hull becomes the windward hull, making the
> > boat
> > > > > > > easier to capsize? Can someone explain the boat handling a
> > little
> > > > > more?
> > > > > >
> > > > > > Best way to reef is to go beam onto the seas and release the
> > sheet.
> > > > > > Then wind down the reef as per normal, being careful not
to get
> > > hit by
> > > > > > the boom. The boom can be sheeted so that it is locked
> > > athwartships,
> > > > > > which makes this easier, and also lets the sail act as a
> > > weathervane,
> > > > > > keeping the boat beam to. There is no way the rig can be
> > > sheeted fore
> > > > > > and aft with the wind from the wrong side, so capsizing the
> > > wrong way
> > > > > > is very difficult. If this is not clear, please ask more
> > questions.
> > > > > > >
> > > > > > > Are there any harryproas in the water on the east coast of
> > the US
> > > > > that
> > > > > > > I might actually see one in person?
> > > > > >
> > > > > > There is one in Maine that was the first one we built
> > > professionally.
> > > > > > It is used as a recreational sailer and a ferry boat for the
> > boats
> > > > > > anchored in Rockport Bay and is non standard (walk through
> > windward
> > > > > > hull, 50 hp outboard) . Second hand information is that
it has
> > > sailed
> > > > > > at 15 knots in 15 knots of breeze, but that is all I
have. The
> > > > > > owner has not spoken to us since we could not meet our price
> > > estimate,
> > > > > > despite nearly going broke trying. he had to finish the
> painting
> > > > > > and some of the fitting out himself. His name is George
> Marks. He
> > > > > > was the harbour master at Rockport. I would be very
> grateful for
> > > > > > feedback from anyone who talks to him or sees the boat.
> > > > > > >
> > > > > > > I have seen mention of a stay on the mast, but also that
> it is
> > > > > > > freestanding. Is the stay optional? Can the mast still
> > rotate 360
> > > > > > > degrees with the stay? Are there any stops on how far the
> > > mast can
> > > > > > > rotate, or can you just keep turning it in the same
direction
> > > > > endlessly?
> > > > > >
> > > > > > I tried various staying setups on the prototypes. They
are not
> > > worth
> > > > > > the effort on cruising boats, probably not on racers eiither.
> > > Amongst
> > > > > > other drawbacks, the mast could not rotate 360 degrees. None
> > of the
> > > > > > current designs has stays.
> > > > > > >
> > > > > > > For very light airs, can you easily rig some sort of
downwind
> > > sail?
> > > > > > > Genniker, cruising spinaker, etc?
> > > > > >
> > > > > > Pretty easy if required. I use an extension to the front
of the
> > > boom
> > > > > > and attach the tack of the extra to it and sheet it to
the back
> > > end of
> > > > > > the boom. Not ideal, but it works. A large genoa type sail is
> > best
> > > > > > as the rig is rotated so that it is always close hauled, even
> > > when the
> > > > > > breeze is aft. For dead down wind, the boom is athwartships.
> > > > > > >
> > > > > > > I have seen very little on the actual sailing speed of
> > Blind Date
> > > > > (the
> > > > > > > only boat I have heard that does frequent sailing). Has a
> polar
> > > > > > > diagram been created? Or at least anecdotal readings of
speed
> > > under
> > > > > > > different points of sail, with different wind speeds
and sea
> > > states?
> > > > > >
> > > > > > The best indication of the boats' potential is at
> > > > > > http://www.youtube.com/watch?v=8chR6DAFjGA where Rare Bird
> > > reaches at
> > > > > > wind speed on it's first decent voyage. The sails are not
right
> > > > > > (small job, no one has got round to it) and as you can
see, no
> > > one is
> > > > > > trying very hard to sail it fast. Blind Date is considerably
> > > lighter,
> > > > > > with a stiffer mast and better sails. It goes back in the
water
> > > in a
> > > > > > month or two and some more videos will be forthcoming, I
hope.
> > > There
> > > > > > are some pictures and videos of it at
> > > > > > http://www.zeilenmetvisie.nl/NL/home.html I appreciate that
> > this is
> > > > > > not the answer to your question, but it is all we have at the
> > > moment.
> > > > > > Based on my sailing on the (very rough) prototypes the harder
> > > it blows
> > > > > > and the rougher it gets, the better the boats will perform,
> > > compared
> > > > > > to conventional cats. This is due to the rockerless
hulls, the
> > > > > > flexible mast and the lower windage of the harryproa
platform.
> > > > > > >
> > > > > > > What is the underwing clearance (Visionarry and Harryproa)
> > > > > >
> > > > > > 6-900 mm/ 24-36". It can be less at the ww hull as the hull
> > > lifts to
> > > > > > the waves making impact wioth the beam or floor less likely,
> > except
> > > > > > when motoring straight into big waves. .
> > > > > > >
> > > > > > > Finally, a big one. I will never have the time/talent to
> > build a
> > > > > boat.
> > > > > > > I have seen the stated materials costs for Visionarry ($80K
> > > AU) and
> > > > > > > build time (4500 hours). How does this translate into a
> > budgetary
> > > > > > > number to see if I should even be looking at this boat?
> > > Assuming I am
> > > > > > > willing to get it built anywhere that does excellent work,
> > > can I jst
> > > > > > > multiply 4500 hours times $xxx/hr + $80K AU and get a
number?
> > > What
> > > > > > > would $xxx/hr be?
> > > > > >
> > > > > > $AUS72 per hour was our charge out rate. Moderate by
Australian
> > > > > > standards, cheap by European and US standards and very
> expensive
> > > > > > compared to low labour cost countries' rates. I am currently
> > > > > > talking to builders from South America, South Africa, the
> > Caribbean
> > > > > > and eastern Europe about a 60' charter proa. Their labour
> > rates are
> > > > > > much lower, as are overheads, although there may be quality
> > > issues to
> > > > > > overcome. I intend to be on site for the first build to
> > ensure high
> > > > > > quality. This boat's hulls and beams will be far fewer
> hours and
> > > > > > lighter than the strip planked equivalent and the
interior will
> > > be far
> > > > > > quicker to install.
> > > > > > >
> > > > > > > Thanks very much. I must warn you that if someone
replies to
> > > this, I
> > > > > > > am likely to post more questions <grin>
> > > > > >
> > > > > > Keep 'em coming!
> > > > > >
> > > > > > regards,
> > > > > >
> > > > > > Rob Denney
> > > > > > www.harryproa.com
> > > > > > >
> > > > > > > - Gardner
> > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > > >
> > > >
> > >
> >
>


__._,_.___
Recent Activity
Visit Your Group
Y!7 Toolbar

Get it Free!

easy 1-click access

to your groups.

Yahoo!7 Groups

Start a group

in 3 easy steps.

Connect with others.

.

__,_._,___