That origami looks like a Swain. He's the only guy I ever met built a boat faster than me. Rented a spot in a boatyard and launched a 32 ' er 1 month later (easy street). Took 3 months to build my34'strip woody.
Aluminum Lapstrake Colin Archer
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Re: Aluminum Lapstrake Colin Archer
That origami looks like a Swain. He's the only guy I ever met built a boat faster than me. Rented a spot in a boatyard and launched a 32 ' er 1 month later (easy street). Took 3 months to build my34'strip woody. -
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Re: Aluminum Lapstrake Colin Archer
In Bridgeport, Ct., there's a huge unfinished metal sailboat. Heading east on I-95, if you look south you can see it. I believe it's on the property of the local shipbuilding company. It's been there for years. The thing has got to be close to 100' long. Anyone know what it is?I was born on a wooden boat that I built myself.
Skiing is the next best thing to having wings.Comment
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Re: Aluminum Lapstrake Colin Archer
In Bridgeport, Ct., there's a huge unfinished metal sailboat. Heading east on I-95, if you look south you can see it. I believe it's on the property of the local shipbuilding company. It's been there for years. The thing has got to be close to 100' long. Anyone know what it is?
Nice Frers design, 150' LOA....
The interior joinery was almost all complete, boxed up in a few containers I believe...
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Re: Aluminum Lapstrake Colin Archer
The professional sign-makers no longer use MDO but a hybrid class of MDO with a aluminium outer shealth bonded to the inner plywood. I have always considered that a lapstrake build could use this technique for at least the first few strakes in buiding a Oughtred type lap-stake build. It's still plywood to bond with epoxy but the outer veneer is a aluminium coating ply. WHY THE NOT. You would get the best of both techques. I would have gone for it if I had known of such a technique. Its expensive. Yea @ I'm quessing now, but I think he said 350$ a sheet. But what a bottom hull. Any thoughts?????Comment
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Re: Aluminum Lapstrake Colin Archer
The steel boat shown above is a Brent Swain design. I built one.
30 feet or 36 feet. Probably 36. Each plate is about 2,440lbs. 3/16 inch thick.
I also helped to build two other 36 foot Brent swain boats.
There is a CAD CAM steel boat designed by Gary Noble and now many others that are pre cut from pre primed plate. That eliminates a lot of sandblasting later on.
The absolute best book on the subject overall is STEEL AWAY. Then CRUISING AS A WAY of LIFE by Thomas Colvin. A must read. Best book on Aluminum boats is by KLINGEL.
The problem with the lapstrake metal boat being built is this:
A lot of over lapping joints makes noise in the water.
Lots of welding.
Also more wetted surface=more drag.
Corrosion can be much greater than steel.
Aluminum condensates 3.75 times MORE than steel.
To foam or insulate the aluminum is more expensive for the foam, because it must have a special coating first.
If it is the newer aluminum for hulls (5356) or newer it will help as far as the corrosion rate.
Cost is much higher to build the hull.
My boat fantasy below: "Luckystar"
I love the smell of fresh cut plywood in the morning.Comment
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Re: Aluminum Lapstrake Colin Archer
It was started for the TYCO guy (who is still in jail?).
Nice Frers design, 150' LOA....
The interior joinery was almost all complete, boxed up in a few containers I believe...
http://www.sparkmanstephens.com/yach...8641&curr_id=7I was born on a wooden boat that I built myself.
Skiing is the next best thing to having wings.Comment
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Re: Aluminum Lapstrake Colin Archer
There are no bargains in yachting...Comment
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Re: Aluminum Lapstrake Colin Archer
The steel boat shown above is a Brent Swain design. I built one.
30 feet or 36 feet. Probably 36. Each plate is about 2,440lbs. 3/16 inch thick.
I also helped to build two other 36 foot Brent swain boats.
There is a CAD CAM steel boat designed by Gary Noble and now many others that are pre cut from pre primed plate. That eliminates a lot of sandblasting later on.
The absolute best book on the subject overall is STEEL AWAY. Then CRUISING AS A WAY of LIFE by Thomas Colvin. A must read. Best book on Aluminum boats is by KLINGEL.
The problem with the lapstrake metal boat being built is this:
A lot of over lapping joints makes noise in the water.
Lots of welding.
Also more wetted surface=more drag.
Corrosion can be much greater than steel.
Aluminum condensates 3.75 times MORE than steel.
To foam or insulate the aluminum is more expensive for the foam, because it must have a special coating first.
If it is the newer aluminum for hulls (5356) or newer it will help as far as the corrosion rate.
Cost is much higher to build the hull.
My boat fantasy below: "Luckystar"
i just got informed about this thread.
Im the guy building that lapstrake alloy boat and i can comment on this. 5183 with 4.5% Mg is very corrosion resistant. (more than 5356) so im not worried about this. There are many huge commercial crafts, offshore oil-rig installation etc which are build in marine grade alloy.
Noise is solved with insulation. (which is same as for steel)
No need to have special coating when install insulation. Ordinary
insulationmats (like they use when building those floating offshore rigs for living quarters is OK)
Cost of alloy is more than steel but if you add upkeep of steel the gap get much closer.. I avoid painting and sandblasting. Running bare alloy is perferctly ok.
zeyangComment
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Re: Aluminum Lapstrake Colin Archer
Newsletter February 2012. .
Dear Sea Gypsies,
Spring is slowly coming our way, This winter has been really nice
compared to last winter. It has seldom been below -15, which is quite
out of normal.
We had a really nice christmas on the farm, with lots of friends and
seagypies. This year Santa Claus had an australian accent. We tried to
teach him the only one and important centence in norwegian - "Are
there any nice children here" but in last minute he forgot - but the
"kids" still got their presents. The small ones got proper
vikinghelmets and dress of course.... What else for seagypses?
Else we have been doing regular winter maintainance on the farm and
been looking forward to the spring. The boat project is going forward
working on small and big pieces on the boat. We have been doing some
work on how to make a furnace to melt all that scrap aluminum into
more useful stuff like portholes. Casting is not something new. People
have been doing thise for ages. Hopefully we manage to make something
out of brick run on propane or better firewood which we have plenty of
up here. Any foundry and casting experience out there?
Anyway, its quite busy up here now but dont forget to enjoy the early
spring folks! .. and if you want to join our tribe please contact us!
Pictures.
a. Enjoy christmas dinner with friends and seagypies.
b. A young seagypsy quite happy whith his christmaspresent - proper
viking helmet!
c. Out walking the mast. Even a mast need some fresh air these days!
d. We want to duplicate these guys! Anyone with casting/foundry
experience out there? We want to learn!
a: http://weldingweb.com/attachment.php...1&d=1330274085
b: http://weldingweb.com/attachment.php...1&d=1330274091
c: http://weldingweb.com/attachment.php...1&d=1330274096
d: http://weldingweb.com/attachment.php...1&d=1330274103Comment
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Re: Aluminum Lapstrake Colin Archer
Thanks for the update. I lost track of your log, and recently wondered about it. There are several threads on this forum about casting, try a google search for this site.Comment
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Re: Aluminum Lapstrake Colin Archer
There are two, aluminum planked, 50' Richardson motoryachts in Toronto built by Avro, the company that built the Arrow jet fighter. The planks are C-channel and the construction utilizes longerons and ring frames ala aircraft construction. The planks are riveted together at the flange, so no overlap and both vessels are in great shape after 50 years.
MikeComment
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Re: Aluminum Lapstrake Colin Archer
Newsletter April 2012. .
Dear Sea Gypsies,
Still some time until we are ready to put the seeds into the soil. Its
more or less -5 degrees C during night last weeks but daytime is above
zero.
The days have been spent welding and welding and when we havent done
welding we have spent time troubleshoot welding machines. They have a
tendency to break down unfortunately. So we bought 2 more big
machines. We also got hold of another ton of lead. There seems to be
no end to how much lead we need for ballast.
Ahh yes. We got more chickens on the farm. one of our hens found out
we need some easter chickens this year and she missed by 2 days. Not
bad. The small one is a little shy so its hard to take a picture
without getting attacked by the angry mother.
Today it will be traditional easter-dinner here on the farm with
people from near and far. Wish you all fair winds and following seas
and hope you all have a peacful easter.
picture from last weeks.
a: our chickens are enjoying longer and warmer days.
b: two more welding machines arrived on the farm.. It seems we cant
get enough welding machines.
c: Our easter chicken arrived 2 days before easter.
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Re: Aluminum Lapstrake Colin Archer
Newsletter May 2012.
Dear Sea gypsies
Spring has come to the farm! And then came summer, and then a few
blustery days of fall, and finally last Friday and Saturday it snowed
again. But that will be the last snow of the year, we hope - the mild
weather seems to have returned, the trees are leafing out, the
wildflowers are springing up around the river, the bees and the
neighbors have come out of hibernation (again), and we are hard at
work.
This week we mixed a few tons of lovely manure compost into the soil
of the north field, and planted eleven rows of potatoes - by hand -
which should give us about 300 kilos of potatoes in the fall to feed
hungry sea-gypsies all next winter. Next week we'll plant carrots and
onions, and move some tender warm-weather starts to our new greenhouse
- radishes, bok choi, spinach, parsley, beets, and sugar peas so tall,
they might start climbing us if we don't get them out of the kitchen
soon.
Work on the boat has really picked up recently. We've been distracted
with planting, and replumbing the bathroom, and building coldframes
and the new greenhouse - but now that the potatoes are in the ground
and the sea-gypsies are in the bath (phew), we are back in the
boatshed all the time. Our resident woodworker is about to start work
on a wooden dinghy from a traditional Norwegian design, just as soon
as he gets the greenhouse finished. And we cast two tons of lead
ballast, a very medieval process involving a wood-fired furnace in the
yard. The boat will eventually carry five tons, so there is more
casting to do as soon as the scrap yard has more lead for us.
Inside the boat we're sealing off the keel with aluminum plates - the
bow is nearly done, and then we can put in the last of the bow ribs.
In the stern, we're wrestling with engine placement - it needs to be
high enough to fit the cooling system and the primary diesel tank
underneath, but low enough that the propeller clears the stern.
Hmmmmm. Fortunately there's plenty to do while we're thinking about
it - like put on the deck! The boat will start looking dramatically
different very soon and we're all pretty excited.
As always, there's room for more in our big sea-gypsy tribe - so if
you like planting, weeding, shoveling, soldering, sawing, nailing,
welding, grinding, sewing, cooking, drilling, knitting, routering,
getting headbutted by chickens, watching 2-hour sunsets, measuring,
cutting, re-measuring, thinking, re-re-measuring, making bread,
reading sea books, eating waffles or knot-tying, drop us a line!
Picture from last weeks.
a: Sea gypsy girl making psykedelic chair-protection for the chairs.
b: Shaping wood with router
c: Potato-planting.
d: lead melting girl finished melting 2 tonns in one week.
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Re: Aluminum Lapstrake Colin Archer
Newsletter June 2012.
Dear Sea gypsies
We're back to a full farm - the current crew of sea-gypsies hail from
Norway, Germany (times two), Finland, France/Belgium, the UK and the
US - it makes for lively, er, discussions in the evenings while we're
watching Euro Cup matches.
It also makes for rapid progress - in the last few weeks we've picked
the entire farm clean of rocks, planted two fields in a mixture of
cover crops (including phacelia, whose blue flowers are a favorite bee
snack), built and painted a fence around the yard, re-plumbed the
basement, fixed our fleet of bicycles, put in almost a kilometer of
fence around the biggest field, dug up half the far field looking for
a pipe leak, refinished a beautiful old door... and then, in our spare
time, built a model for the boat's dinghy, biked all over the area,
hiked down the river, spent a weekend in Oslo, foraged local plants
for dinner, built a campfire spot overlooking the valley, installed a
swing under the barn ramp, given each other mohawks, and baked about
forty loaves of bread.
And we're going to be parents! Kind of! One of our chickens has very
motherly instincts, and she's been incubating thirteen eggs - some
hers, some laid by the rest of our flock. We're expecting chicks in a
week or so.
All the farming hasn't left us much time for boatbuilding, but we
still managed to make some progress this month: the keelbox has been
welded shut in bow and stern, the last ribs are being bent to shape
and welded in, and the calculations for the curve of the deck have
begun. This week we'll finish the ribs and begin the wood patterns
for the deck frames.
We've been eating like royalty - everybody has learned to bake, and
the spring plants are out in force, so we feast on nettles, milkweed,
chaga mushrooms, dandelions, wood sorrel, and our own bread. After a
long winter of turnips, potatoes and carrots, it's wonderful to have
the green leaves that come with warm days, and the new dishes that
come with new comrades.
So, enjoy summer folks, and if you want to join us, just send us an
email.
Pictures from last weeks.
a: Sea-gypsy girl busy planning the route with help of the world-map
in background.
b: Fence-banging guys!
c: The Fencing-crew on the way to the field.
d: Enjoy a short rest after hours of rockpicking in the field.
e: Welding up the keelbox inside the boat.
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