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Chapter 4: BAYOU BELLE
by David Beach
Bayou belle provides one designer's solution to the search for an ideal river cruiser, and does so with the capabilities of the average small boat builder as a prime consideration. The structure is simple to fabricate and assemble, utilizing exterior grade fir plywood wherever possible. The structural members are of oak or yellow pine although locally available woods of equal strength are entirely satisfactory. Only a band saw and a tilting bed table saw are required besides the usual chest of hand woodworking tools and a power drill with screwdriver attachment.
The lines and offsets define the form of the boat to the builder. It is important that at least the bow and stern lines and sections be drawn full size. The middle of the boat is rectangular, frames 3, 4, and 5 being identical except for sheer height. The bow sections are slightly veed and have a considerable lift to both keel and chine. The sections aft are flat athwartships with a bit of rocker to the keel and chine. A standard camber of three inches in seven feet eight inches of beam is detailed, which permits all decks beams to be cut from one template. The construction plan and profile, together with the sections, show the details of the hull, cabin and interior. As can be seen, the bottom structure comprises four longitudinal box girders, plus the chines and keel, supported by six transverse frames and the two transoms. Where possible plywood bulkheads tie the sides and bottom together to provide a very strong structure. The chine forward tucks in and upward, which gives the only winding or changing bevel on the hull. Every other piece of wood is capable of being cut on the band saw or table saw. The longitudinals comprise the bottom battens and those battens notched into the tops of the transverse beams for support of the cabin deck. Double plywood gussets between frames tie these battens together into a rigid structure. All plywood-to-structural-member joints are glued and screw fastened for which a waterproof resorcinol base glue is required. Fastenings should be of brass or bronze as indicated on the drawing, or of cadmium-plated steel for fresh-water use if desired. All paint should be the best marine grade, applied as directed.
The controls are a bit novel. Both steering stations have complete engine and steering controls. The steering is by plastic-covered wire rope over roller-bearing or ball-bearing pulleys. The wire leads should be about as shown and fitted with guards where they are thought necessary. To reduce the friction load on the helmsman the two wheels are individually connected to the motors through snap hooks on the motor end of the ropes as shown. While this is not a necessity it does eliminate the extra effort on the part of the helmsman of having to turn both wheels and pulleys in addition to the motors. The two clutch and throttle controls operate through a differential unit also shown on the construction profile. Fit a metal guard over these units so that the lubricant thereon will not soil clothes and the units will be protected from rain and spray. LARGE SCALE BLUEPRINTS will simplify
construction. Send $15.00 to Twenty Boats
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