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01.12.2020, adminIts been 5 years since I sold my last sailboat, the longest I have been without a boat since I started sailing in the late s. I have just started the process of trying to figure out what my next boat is going to be.
Saw a cold molded wood boat construction oil boat last weekend that was built in the early s and was cold molded of cedar. I am wondering how well this type of boats have held up? What things should I be looking out for? How well is the typical surveyor going to be in checking out a cold molded boat?
How is the resell value going to be in 5 or 10 years, do the general public think of these as wooden boats? Not sure how well they hold up, but damn they are beautiful. Admired one last Saturday when racing was cancelled, probably late 70s early 80s vintage, and it looked new. So pretty. I should add, probably like most things, find a responsible owner that maintains cold molded wood boat construction oil toys and it will be fine.
The one I admired laid on her lines well, cold molded wood boat construction oil that rounded pinched off morc look, but stood out amongst her dock mates. A real looker she. If used and maintained, they hold up.
If neglected, particularly if bilge water is left standing, they deteriorate. Rot along the centerline where the hull halves join the keelson is a good place to check.
Also leaks around chainplates where they attach to bulkheads, just as a glass boat. I would suggest hiring a surveyor with some experience with cold-molded boats. Pendragon I, built of cold-molded kauri inhas held up well considering she isn't babied at all, but raced weekly. Actually, it's more about how they are built than anything, but a well built cold-molded boat should last just about forever with a bit of attention.
A 30 years old cold moulded boat should last longer than the equivalent grp one as long as you don't abandon it. If it lasted 30 years, the chances are that it was well built. You may eventually find localised rot in some places, that can be cured with a few scarf joints.
On the other hand you may find that the GRP boat become softer and softer and eventually it is hard to trust it.
We just spent our winter in the pacific islands on itwe got hammered going there in may and we cold molded wood boat construction oil a couple of hard days getting out of Fiji a few weeks ago smashing through those trades. Doesn't make any noise, no creaks or groansno jammed cupboards, no concerns whatsoever about structural integrity. Had a nice half tonner, epoxy and dynelmcovered, started to track in the hot sun after it was painted a dark green.
It is still in great, if not battle scarred, shape. If everyone knew they could stop the "IOR death roll" that easily the rule may have lasted longer. That often got quizical looks from people and then he would add 'Wood'.
Recently surveyed this SoCal icon built by Eichenlaub in Still looking good and going strong. Slightly off topic, but about 20 years ago I surveyed a cool looking 30 something called Zoo? I think it was a Schumacher design, that ended up going to San Francisco. Zoo II was mids for Canada's Cup, can't remember designer.
MORC was a pretty rockin rule. Produced moderate dimensioned boats that sailed nicely. Old boats and production boats remained competitive. Too bad it died. Thanks Cal. I was on cold molded wood boat construction oil 30 year old cold molded sailboat a year ago that was built by Vic Carpenter that was as sound as new. Find a good surveyor and don't be concerned. Loon close up by robert perryon Flickr. My boat, built by Schooner Creek Yachts is 20 years old.
Cedar, Meranti, and Fir make up the skins, cold molded wood boat construction oil 2 layers of 6 oz glass over it all. A Kevlar layer over the inside layers from the bow back ten feet make up the collision barrier. Bashing up the Baja a few years back, this thing just crushed the seas without a quiver. Super strong, super quiet in a cold molded wood boat construction oil, and at 51 feet, only weighs 21, pounds.
I would do exactly the same if I did it again. Plus, it's only hit 23 knots three times! Yes, strip planked as I remember. During the rebuild an Imp-style tube frame was built into the interior.
This was when they eliminated the mizzen, went way up on the mainmast, and fitted a deeper keel. Though the keel and rudder were removed and reinstalled in Tampa, the majority of the rebuild was done at Courtney Ross's yard on Clearwater Beach. The name of the street the yard was located on is Windward Passage Lane. Many of these woodies are still going strong and are competitive with brand new glass boats and that is with use of resorcinol instead of epoxy.
The class does not allow new cold-molded Thistles to be built due to concerns with cost. Granted, not cold molded, but In the same vein Wylie, considered "radical" when it first hit the water and one of the prettiest bright-finished boats ever JMHO.
I'm no expert but as what Ponco and others have said there is cold mold and there's cold mold. There are the ones built with things like West Systems which the wood is much the carrier for the epoxy cold molded wood boat construction oil a fiberglass cloth and more exotic construction into the mix. Some are more like a glued cold molded wood boat construction oil wood boat as some of the components.
I've seen and sailed and raced on. Like the Peterson 41 "Wisp" that was pretty bullet proof generally. So painting a broad brush cold molded wood boat construction oil "cold mold" IMHO.
Hot-molded was a process where the boat was made of thin wood veneers in a manner similar to that used for plywood glued with resourcinol and cooked under pressure in an ovenbut over a form that made the resulting plywood a boat shape. Cold-molded used the same idea, but the veneers were glued together with epoxy. It can be over a form, or over the frames and stringers that make up the structure of cold molded wood boat construction oil boat.
Neither oven, nor pressure is required for cold molded, though some cold-molded techniques use vacuum bagging to create pressure. And most cold-molded boats have a layer of glass, but it's primarily for ding protection and a painting surface, not for strength which is in the wood laminate and internal framing. You missed the original cold moulded which used lesser glues than epoxy - Resorcinol, Urea Formaldehyde.
With those methods you end up with much more of a "wood" boat than with epoxy laminations where the wood is essentially the fiber in a composite structure - a far stronger and more waterproof method. Lois Lane was recently restored at great expense after being severely holed on Lake Tahoe, poorly repaired, and pretty much left to rot.
Back in the Bay area. Cold Molded Boats were the rage in the seventies. Designed for racing, they were light, fast and affordable. I even started a boat building company when i got tired of waiting for quotes from builders from all around the country.
There is not always, there is only. Thanks, I asked because I have seen two Mull boats, the 30' and 22', that appear to be be Glass over wood.
Without close inspection of the core it is hard to tell if it is a bunch of thin cold molded wood boat construction oil glued together or just single core with glass. Both boats sit now, the 30 is still a mess and the 22 is on a ranch in Nipomo. There are two ways to look at molded wood boats: laminating veneers like using glass fibers or, basically, making your own curved plywood from scratch.
It's the same thing, just a different way of thinking about the process. The WEST System tm treats the wood fibers much the same way as unidirectional glass fibers with the epoxy holding the fibers in matrix. Hot molding was popular after WWII when there were left-over wooden aircraft-manufacturing autoclave facilities. The veneers were bent over molds, then heat and pressure was applied to set the wood and cure the resorcinol glues.
This is very much the make-your-own-curved-plywood style. Same glues, same techniques. Strip Planking is sort of a cross between cold molding and carvel construction.
Strip planking is popular on larger boats and on canoes and kayaks. Strip planking is the most like carvel planking except the strakes are edge-glued instead of caulked, which makes for a monocoque structure as opposed to plank-on-frame.
Strip planked boats can have frames but typically the frames are fewer and more strategically placed. For a given amount of wood, strip planking is much stronger than carvel planking but the trade-off is that strip planking is much more difficult to repair.
Cold-molded hulls are more like laminated composites such as fiberglass or carbon fiber then like traditional carvel planking. Basically all you needed was clamps or often staples to hold the pieces in place until the epoxy cured. The Gougeon brothers, in their book on boat construction, don't actually refer to their approach as "cold molding" The core bit, though, as Somebody Else notes above, is that all of these techniques center on using wood as the "fiber" holding the epoxy in matrix.
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