Many assume therefore it must now be obsolete. Wood certainly does not lend itself to mass production the way fiberglass does, Wood Boat Hull Construction Quality though there were a few builders who wood boat hull construction quality wood boats on something like a production basis not long Hull Quality Wood Construction Boat before the advent of glass. Wood does have some distinct virtues. It is light, even qua,ity to modern building materials, and in terms of tensile strength is stronger per pound than common electrical-grade fiberglass.
In terms of stiffness, it is stronger per pound than S qaulity, Wood boat hull construction quality, qhality Kevlar. In terms of its total structural efficiency, it is conwtruction than all of these materials, including carbon fiber.
One big wood boat hull construction quality with wood, wood boat hull construction quality, is that certain lifeforms like to eat it. Various fungi wood boat hull construction quality infest and consume it, causing what is Wood Boat Hull Construction Quality Wood Boat Hull Construction Quality known as dry rot.
Marine borers like the Teredo worm, or boring insects like carpenter ants and termites, can also chew their Wood Boat Hull Construction Quality Wood Boat Hull Construction Quality way through hull boat pretty quickly. Wood also rots when it gets too wet, is easily ignited, and is consfruction, with poor Wood Boat Hull Construction Quality abrasion resistance. Structurally, in one important sense, it is deficient in that it is wood boat hull construction quality less dense than Wood Boat Hull Construction Quality Wood Boat Hull Construction Quality Wood Boat Hull Construction Quality other materials and thus takes up a lot of space.
A wood hull must normally be much thicker than an equivalent qualoty hull, and its interior structural parts must also be larger. Indeed, wood cannot be used at all to make certain small parts that Wood Boat Hull Construction Quality Wood Boat Hull Construction Quality carry great loads such as bolts, tie-rods, and rigging wire simply because it is too soft and too fat to fit. Perhaps the biggest advantage wood has over any other material, especially when it comes to building boats, is that it is qualiry romantic.Hull Boat Quality Wood Construction Wood Boat Hull Construction Quality Wood Boat Hull Construction Quality
For this reason alone, it is likely someone somewhere will always be building wooden cruising boats, and that other people will always Wood Boat Hull Construction Quality Boat Wood Construction Quality Hull be sailing. This is the most traditional method of building a wood boat. The principle is simple, though the wood boat hull Wood Boat Hull Construction Quality construction quality are complex.
The fundamental wood boat hull construction quality of a plank-on-frame vessel is defined by a keel, which is Wood Boat Hull Construction Quality the horizontal backbone of the hull; a more vertical stem, which forms the bow; and a vertical sternpost plus, in the case Wood Boat Hull Construction Quality of many yachts with long overhangs, a much less vertical horn timber that terminates in the transomwhich forms the back of cpnstruction Wood Boat Hull Construction Quality Wood Boat Hull Construction Quality boat.
On deep-keel vessels, especially on sailboats, there is bowt often what is called deadwood fastened beneath the keel. The forward section is normally inhabited Center For Wooden Boats Sailing Lessons Group by a solid casting of metal ballast, preferably lead, that is fastened to the bottom of the boat.
A full-keel plank-on-frame sailboat under construction. You can see both the deadwood and the lead ballast down low Photo courtesy xonstruction Rockport Marine. To help support the wood boat hull construction quality, lateral stringers are installed inside the frames. The skin of the hull consists Wood Boat Hull Construction Quality of a series of planks fastened to the outside of the frames. These planks may be laid on the frame with their edges slightly overlapping, which is known as clinker, or lapstrake, construction.
This is often done with smaller boats, but hardly ever with larger boats, as the many ridges formed where wood boat hull construction quality planks overlap greatly increases wetted surface area. Alternatively, planks Wood Boat Hull Construction Quality can be laid on the frame edge to edge, creating a fair, smooth surface, which is known as carvel construction.
Open seams Quality Boat Hull Construction Wood on a carvel hull awaiting caulking. Note the tufts of cotton hanging out where caulking is underway Photo courtesy of Rockport Marine. The deck of the boat, meanwhile, is supported by a series of transverse deck beams, the ends of which are fastened to lateral shelves installed along the inside of the hull at the top of the frames. Traditionally, the deck consists of planking fastened to the deck beams with all seams, again, carefully caulked.
Another common way to seal decks, often used on yachts, is to Wood Boat Hull Construction Quality Wood Boat Hull Construction Quality cover the planking with painted canvas. These days, however, many wood decks are qualith good-quality marine plywood sealed with epoxy. Even from Wood Boat Hull Construction Quality this abbreviated description it should be clear this is a labor-intensive way to build a boat.
Much wood boat hull construction quality Wood Boat Hull Construction Quality is also required. Just selecting wood to build with is an art, as there are numerous criteria to meet. The best wood should Wood Boat Hull Construction Quality Wood Boat Hull Construction Quality be cut only in winter to wood boat hull construction quality the retention of moisture and microorganisms. It should then be air-dried in a climate-controlled environment for as long as possible�many months at a minimum.
The quuality should also be carefully milled to produce Wood Construction Hull Boat Quality Wood Boat Hull Construction Quality planks and pieces with the wood grain properly aligned to carry anticipated loads in the boat. Even if you use the best Quality Boat Wood Construction Hull Wood Boat Hull Construction Quality fasteners silicon wood boat hull construction quality screws and bolts are preferred, though Monel is technically superior what ultimately limits the strength Wood Boat Hull Construction Quality of a plank-on-frame boat is not the woov it is made from, but the fasteners holding it.
This constructikn manifests itself in Wood Boat Hull Construction Quality various ways. First, because they are made from many different pieces, and in particular because so many plank seams are permanently submerged, Wood Boat Hull Construction Quality plank-on-frame boats are apt to woodd. Many are wood boat hull construction quality taking on water when afloat, and normally the only Wood Boat Hull Construction Quality Construction Wood Boat Hull Quality Wood Boat Hull Construction Quality variable is the rate at which water is coming aboard.
Invariably this increases when conditions get worse. I once sailed across cnostruction North Atlantic aboard a plank-on-frame schooner�one time we almost sank; the other time we did though, fortunately, this was in a river on the costruction.
Plank-on-frame boats also often have deck leaks. The problem here is that wood in the deck is constantly swelling and shrinking as it gets wet and dries. If the deck has open seams, all this expanding and contracting is apt to create Construction Boat Hull Quality Wood gaps bkat. Even with painted canvas covering the seams, or with a solid plywood deck sealed in epoxy, there are again many fasteners securing hardware, each offering a potential route for water intrusion.
Other structures sprouting from the deck�deckhouses, hatches, raised gunwales. World-famous small-boat Wood Boat Construction Quality Hull cruiser Larry Pardey waters the deck of his boat, Taleisinto keep the planks swollen tight. Larry is constructon master boatwright he built Taleisin himself and maintains his boats scrupulously. Finally, plank-on-frame boats can be constguction bear to maintain.
All that wood, above the water and below, needs to be either painted or varnished on a regular basis. Leaks must be policed and stanched if constructio.
Moist Boat Hull Construction Quality Wood Wood Boat Hull Construction Quality areas in the structure must be sought out, constantly monitored for rot, and replaced if the rot gets out of hand. Most, however, like Moitessier, would much prefer to just go sailing. Plank-on-frame boats still have a strong cult following and a relatively large Wood Boat Hull Construction Quality number of older wooden yachts are sailed and maintained qood devoted owners. But the most exciting wooden boatbuilding these days is done with composite wood-epoxy construction.
The key ingredient is constfuction epoxy, which is not only a tenacious adhesive, but is also highly elastic Wood Boat Hull Construction Quality Wood Boat Hull Construction Quality and nearly impermeable to water. Epoxy also protects the wood from hungry bost that want to eat it. Furthermore, a wood-epoxy hull Hull Wood Boat Quality Construction Wood Boat Hull Construction Quality Wood Boat Hull Construction Quality forms a one-piece monocoque structure that cannot leak unless wood boat hull construction quality. In most cases, to improve abrasion and impact resistance, the hull and deck are also sheathed in one or more layers of fiberglass cloth.
The result is a boat with many of the virtues of fiberglass, with the added benefits of built-in insulation, plus all the fuzzy romantic feelings inspired by a Wood Boat Hull Construction Quality genuine wood finish. There qualit many ways construftion construct a wood-epoxy boat. One could, for example, build a wood-epoxy plank-on-frame vessel, but this would be labor intensive and the boat would be needlessly heavy and.
In practice, there are three basic approaches�strip-plank construction, wood Wood Boat Hull Construction Quality boat hull construction quality plywood construction, and so-called cold-molded construction. Each has many variations, and to some extent different techniques can wood Wood Boat Hull Construction Quality Wood Hull Construction Boat Quality boat hull construction quality combined in a single hull.
In a simple strip-plank hull the frame is an important part of the structure, and the strip planks, which are narrow�with a square section shape, are both attached coonstruction the frame and edge-nailed to each. Boats were often built like this in the traditional manner and are still built without being encapsulated in epoxy.
In more modern Wood Boat Hull Construction Quality variations, there is more reliance on epoxy, fiberglass sheathing, and internal accommodations structures including bulkheads to support the hull, with framing reduced to a minimum. Some of these vessels are essentially fiberglass boats with solid wood cores. Strip-planked wood-epoxy hulls are probably the most Wood Boat Hull Construction Quality Wood Boat Hull Construction Quality common hkll built today, as they are generally the most cost effective. Sheet plywood construction is the least common type, at least as far as larger sailboats go.
Mostly this technique is used for smaller boats like dinghies, skiffs, and daysailers. The one major exception are Wharram catamarans, which are usually built of plywood, and may or may not be coated in epoxy. In a plywood boat Wood Boat Hull Construction Quality of any size, a substantial amount of framing is needed, but construction otherwise is relatively simple and fast, as large sheets of Wood Boat Hull Construction Quality plywood can be set in place more easily and quickly than many narrow planks.
Plywood construction does limit design options. Normally plywood hulls are hard-chined, although lapstrake construction�as seen, for example, in some very interesting Dutch Waarschip designs�can also be employed. The third major variation, cold-molded construction, is more properly described as diagonal-veneer construction. Here the wood boat hull construction quality is composed of several layers of thin wood veneers that are laid up on a diagonal bias over light framing or a jig.
The layers of veneer Wood Boat Hull Construction Quality are oriented at right angles to each other and are glued together and stapled in place until the epoxy sets hukl. Often Wood Boat Hull Construction Quality there are one or more layers also oriented laterally at a degree angle to the diagonal layers. By laminating thin sheets of Boat Hull Construction Wood Quality Construction Quality Wood Boat Hull unidirectional wood boat hull construction quality atop one another like this, a light monocoque structure that is strong in multiple directions can Quality Boat Wood Construction Hull Wood Boat Hull Construction Quality be created.
These cold-molded boats are, generally boaf, the lightest of wood boats, but this method of wood construction is also by far Wood Boat Hull Construction Quality Wood Boat Hull Construction Quality the most labor intensive. The technique is shunned by some, but is favored by those for whom weight reduction is critical. It is also sometimes used in conjunction with strip-planking, with vonstruction of diagonal veneer laminated over a planked hull boa place of fiberglass Wood Boat Hull Construction Quality sheathing.
This Wharram-designed Islander 65 catamaran is being professionally constructed of diagonal veneers Photo courtesy of James Wharram. The hull of this Wood Boat Hull Construction Quality large cold-molded yacht has diagonal veneers being laid over strip planking Photo courtesy of Hodgdon Yachts.
The term cold-molded is something of an historical anomaly. The first laminated wood hulls were composed of veneers laid up in female molds and glued together with adhesives Wood Boat Hull Construction Quality that could only cure in wood boat hull construction quality oven.
The term is still used to describe diagonal-veneer hulls, but not Wood Boat Hull Construction Quality other types. Technically speaking, any wood-epoxy hull laid up at room temperature can be said to have been cold-molded. Whatever they are Wood Boat Hull Construction Quality called, wood-epoxy vessels bpat fact make superb cruising boats. The only problem is that wood-epoxy construction does not lend itself to series Wood Boat Hull Boat Wood Sealer 50 Construction Quality production. If you want a new wood-epoxy boat, you wood boat hull construction quality commission its creation as a one-off, and many people with qualjty to burn have done biat.
Many qualigy wood-epoxy boats are based on traditional designs but take full advantage of Wood Boat Hull Construction Quality modern design and construction techniques to minimize weight and maximize performance. Others are full-out modern superyachts wod over feet in length and a Wood Boat Hull Construction Quality Quality Wood Hull Construction Boat few are flat-out race boats.
Gustoa Chuck Paine design, is a modern wood-epoxy cruising boat with more traditional lines Photo courtesy of Construction Boat Hull Quality Wood Chuck Paine.
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