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Traditional boat construction and part naming | Wooden boat plans, Wood boat plans, Boat plans

Tern was designed for a group of young people to build and then sail or row roughly miles to Alaska and. Their story of their 3-month long voyage from Lopez Island to Revillagigedo Island and back again includes tribute to Tern, who kept them safe and got them home through many adventures.

Tern is a lengthened version of Ratty, but her planking is screwed to yellow cedar frames and her interior is completely open in the traditional manner. Tern's plans are free to download.

Sheathed-strip planking over plywood bulkheads, full size plots for bulkheads, transom, and stem provided. Plywood construction using either fillet and tape or solid timber cleats with screw fastenings. Sheathed cedar strip small boat construction plans co with laminated backbone, fiberglass centerboard case, plywood decks and bulkheads.

Sheathed strip planking on laminated frames. Plywood deck. Riveted lapstrake western red cedar above the waterline. Traditional construction with bright finished mahogany planking small boat construction plans co riveted to steam bent white oak frames. Multi chine plywood construction over egg-crate style internal grid work with flush watertight sole above DWL.

Construction red cedar lapstrake planking riveted to bent white oak frames. Douglas Fir keel and laminated stem. Construction options, strip cedar planking or foam sheathed with fiberglass over permanent plywood bulkheads fillet and taped to the skin.

Plywood planks over sawn frames. Two arrangements. Both will sleep people with room left over, a complete galley, and small head with composting toilet. Solar panels, a windmill, rain catchment, and a wood stove. Pogy 17 Motorsailer Lapstrake plywood with fibreglass sheathing over bulkheads construction. Pender Harbour 17 Daysailer Plank on frame carvel construction Captain Flint, 17' cat-schooner Plywood on sawn frames Sailing Scooter Lapstrake plywood or sheathed strips Sheathed sheet plywood planking over plywood bulkheads.

Laura Cove, 28' Sailing Scow Plywood hull and deck planking over plywood bulkheads. Lambert 28, Sail Assisted Outboard Cruiser Plywood planking over plywood bulkheads, fiberglass sheathed.

Pogy Islandbird, 16' Whitehall-type Sailing Dinghy Traditional construction with bright finished mahogany planking copper riveted to steam bent white oak frames.

Displacement Power Boats to 30' Pocket Cruiser 16 Cold-molded, sheathed �strip, or foam cored fiberglass construction. Double-ender 18 See the Northcoast Double-ender Regan 18 Double-ender 18 with transom. Timbercoast Troller 22 Plywood over sawn frames or aluminum construction. Tanu 24 Aluminum plate over transverse web frames with longitudinal stringers.

Garden Bay 23 Construction options, strip cedar planking or foam sheathed with fiberglass over permanent plywood bulkheads fillet and taped to the skin. Pearson 28 Troller Sheet plywood or aluminum construction Ironbark 28 Traditional plank-on-frames or small boat construction plans co Johnson Double-ended traditional workboat-style cruiser Johnson 30 Traditional Scottish Ringnetter Heavy Displacement Double-ender Planing and Semi-displacement Small boat construction plans co Boats to 29' 16 Lapstrake Speedboat Lapstrake cedar on bent oak frames.

Whiskey Creek 16 Aluminum crewboat. Berry Point 26 Sheathed plywood over a series of plywood bulkheads and longitudinal stringers. Douglas Fir 28 Semi-Displacement. Selkie, 15' Inboard Launch Carvel construction. Alder 18, Island Support Boat Plywood. Full size frame patterns available. Wedge Point 27 small boat construction plans co sail-assisted, semi-displacement, trailerable classic launch.

Marjorie 26' Barge Two sleeping cabins, a head, galley, and a pilothouse. Email tadrobertsdesign gmail. Address P. Web Sites tadroberts.

Abstract:

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In truthschooners had been serve polished in a early 18th century by North Americans, ease down? Need to outlay time in Texas with your teenagers but screaming.

Steel is usually sold in quantity by weight. Simply use this figure times the cost of steel per pound in your area to arrive at a reasonable estimate for hull material costs.

Aluminum is also a superb material for boatbuilding by the person qualified in aluminum welding. Aluminum boats using welded marine alloy construction are strong, lightweight, durable, and easy to maintain. As with steel, the designs should be specifically intended for this material. Plans listed for aluminum construction include all the details necessary to build the boat in sheet aluminum.

See our Online Store for additional publications on aluminum construction. Please see our Online Store for all the Glen-L designs available for aluminum construction. The following can be used as a general guideline for selecting materials. However, the listing is not necessarily all encompassing nor given in order of preference. To figure hull cost, use weight of hull times cost per pound. For further information on welding, see WeldingTipsandTricks.

The number of people with aluminum welding skills and access to fabricating equipment has increased considerably over the years. Yet many are unaware of fundamental considerations confronting the short-handed amateur building a single boat for his own account. The would-be do-it-yourself aluminum boatbuilder already familiar with aluminum often has his roots in a non-marine production fabrication setting.

Thus there may be a tendency to want to apply mass-production techniques to the construction of just a single boat. But building a single boat yourself is considerably different from one built on a production line, and thus may require certain adjustments and even a revised mind set on the part of the builder.

First, there is no one, superior way to build an aluminum boat. In fact, there can be many suitable approaches and variations. Consider the following. Because production builders are always thinking up ways to cut labor and material costs, and time required to build boats, they evolve specialized methods and materials that help toward these ends even if there is not necessarily any improvement in the boat itself.

For example, they may use special proprietary extrusions to expedite some assembly process such as joining side and bottom plating at the chine see Fig. Alternately, your chines might then be backed with a simple round bar Fig. None of these methods is necessarily superior, but just different due to circumstances.

Also, production builders often make up sophisticated re-usable production jigs over which pre-cut hull panels are assembled and welded first. These jigs may also rotate to facilitate high-speed welding, with internal members added after the hull is removed from the jig.

In either case, end results are much the same and with comparable boat quality. Using a frame substructure for setting up your hull has several advantages for the do-it-yourselfer typically working alone. First the frame substructure makes it easy to assure hull accuracy that is so important to ultimate performance in a powerboat. Factory production boatbuilders often use specialized forming equipment not always available to amateurs, or use forming services that might be provided by metal suppliers when quantity requirements are high.

Conversely, a design for the do-it-yourself builder would more likely specify internal longitudinal stiffeners i. Either method gets the job done but the latter is easier and cheaper for most building their own boats. First, a disclaimer. But in reality few do-it-yourselfers want to pay the price for the service.

But steel is considerably heavier than aluminum, so boats designed for steel are usually designed for greater displacement. The consequences for a semi- or full-planing powerboat might be so much the better since the lighter aluminum boat will need less power and fuel. But in converting slower displacement-type powerboats from steel to aluminum, you might need to add ballast into such a boat done in aluminum to bring it back down to its original lines.

This may place the center of gravity too far below that of its steel brethren and result a snappy, jerky motion. So instead, you may want to place some of the added weight higher up. Aluminum is not as strong as steel so some compensations must be made if using it in place of steel. Without getting too technical, with aluminum used for shell plating e. Put another way, to get the same strength as steel in an aluminum hull, it needs to be approximately half the weight of steel.

More important is how the two perform under repeated fatigue loading stress cycles alternating between tension and compression. Tests show that for a similar number of cycles, steel stays above its yield strength threshold. In other words, it is more likely to fail due to fatigue over time, an important consideration for boats subject to such conditions i. But by how much? Converting from steel to aluminum is fairly straight-forward mainly because the members used are much the same in configuration and the methods of design and construction are similar.

And while there are standards-making organizations e. Consider plating thickness. On the steel boat, this is more often based on the practical minimum necessary to ward off corrosion over time, provide decent welds, and a thickness adequate to minimize unsightly deformation.

Thus 10GA. And in most cases this increase applies mostly to thickness alone as is listed in Fig. An operating premise is that steel boats in the size range discussed are almost always stronger than is necessary; this due to the nature of the material, for reasons previously noted, and the fact that the shape of most boats adds strength in and of itself, and often where it does the most good such as in the bow.

So using the example, 10GA. In other words, multiply the thickness of the steel member by a factor of from 1. Tip: Start with 1. The point is, many alternatives can be used to build an aluminum boat with largely the same results in terms of strength, durability, etc.

In the above and referring to Fig. First, the extra strength that a shaped member would provide in the steel boat is simply redundant in the size boats discussed; it would just add weight, cost, and complexity. Second, shaped members add to the difficulties of inspection, maintenance, and corrosion protection in the steel boat; for example, the ability to see and coat the underside flanges is difficult, especially when such members are small.

However, in the aluminum boat in Fig. But there are several reasons for using shaped members, especially for longitudinal stiffeners. First, such members are stronger. Or put another way, you could have the same strength in a lower-profiled shape than with flat bar.

And the added strength in the aluminum boat is a plus. Another benefit might be more usable interior volume. They tend not to be so floppy, and bend more uniformly than flat bar. The downside is that extrusions cost more than flat bar or the sheet stock one can use to make flat bars, and may not be readily available at least in the size you want.

If working from stock plans for an aluminum boat, the designer probably specified certain sizes, types, and alloys of members for framing, etc. But deviations may be possible. Most designs have some latitude in alternates that can be substituted. Channels can be made from split square or rectangular tubing, or even split pipe if somewhat larger than the specified channel.

You could even fabricate your own sectional shapes from built-up flat bar. Then too, if members are not available in one size, perhaps one the next size up will suffice. However, you should always consider the consequences of added weight that such a change might make.

Conversely, it is probably better to avoid downsizing to a smaller member as the opposite alternative. To the novice, there is a bewildering array of aluminum alloys available. But for the welded aluminum boat, the choices narrow down to the so-called marine alloys in the and series, the latter typically being extrusions. Yet even within these series there are still many alternatives.

But the most common, readily available, and suitable for welded boat hulls include: H32 H34 H H32 H H However, the designer may have already taken this into consideration if is specified.

Corrosion resistance for the alloys listed above is excellent in all cases. The material has good corrosion resistance also and is commonly used for extruded shapes. Early aluminum boats were often made with closely-spaced transverse frames with few, if any, longitudinals, a carry-over from traditional wood boatbuilding no doubt. However, the amount of welding required and the ultimate heat build-up caused considerable distortion and weakening of the skin.

The more enlightened approach used today emphasizes longitudinal stiffeners fairly closely spaced with these crossing more-widely spaced transverse frames only as required to maintain hull shape. In fact, some smaller welded aluminum boats may need few if any frames at all, especially where bulkheads may serve double duty. The preferable approach is for transverse frames not to make contact with the shell plating other than perhaps at limited areas along the chine or keel.

About the only case where a transverse bulkhead needs to make continuous plating contact is if it is intended to be watertight. Even then, such a practice tends to distort the plating and is often readily visible on the outside of the boat. In short, general practice is to NOT weld plating to transverse frames or bulkheads even if such members touch or come near the plating. The chine is the junction between the bottom and side on a v-bottom or flat bottom boat.

On high-speed planing boats, this corner should be as crisp are possible, especially in the aft half of the hull. The reason is that water should break free from the hull to reduce frictional drag at speed, and not climb up the topsides.

As shown before, Fig. All rights reserved. Mailing Address: East Park Ave. Aluminum Designs for CNC. Ken Hankinson Designs. Human Power. Power Cruisers. Special Purpose. Fiberglass Construction. Boat Trailers. Aluminum Construction. Steel Construction.

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