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Crawfish--A Tunnel Stern Motorboat (Pub. No. 7056)

Designed by Wifliam F. Crosby

LOA 15 ft. 6 in., BEAM 4 ft. 8 in., DRAFT 4 ft. 1/2 in.

The little boat shown here is designed for protected waters where the bottom is close to the top. The draft figure includes the rudder and propeller.
As you can easily see she is a tunnel stern boat equipped with a little marine engine not to exceed 4 hp, at the outside. The engine shown is only 21/2 hp. She is not built for speed as no tunnel stern boat can be driven at high speed. Being a flat bottom type, she is not meant to go to sea in either. She would make an ideal fishing boat for some shallow pond or lake. She should weigh a little over 600 pounds complete with engine, propeller, etc. The weights of engine, tanks, seats, etc., should be placed in the hull as shown in order to have her trim properly. The tunnel for the propeller is large enough to take any wheel up to twelve inches in diameter--which is more than ample. The angle up to the top of the propeller and down to the stern should be as shown. Do not make the mistake of running the tunnel directly out to the stern even with the highest point of the tunnel. If you do, it will not pick up the water and your propeller will be revolving mostly in air. The construction offers wide possibilities in choice of materials: The materials specified are those most suited. Others may be used but don't try to use a soft wood such as redwood and expect fastenings to stay in it. Plywood; (waterproof) may be used almost throughout with the exception of frames and the bed pieces to which the engine is actually, mounted. If you use waterproof plywood, you can reduce the thickness by about one-half from the material specified as it is at least 40 per cent stronger than ordinary wood.

4 page(s)

Sport--A V-Bottom, Air-Cooled, Inboard in Plywood (Pub. No. 7818)

Sport is a V-bottomed inboard ideally designed for fishing on bays, lakes or streams. The boat is relatively fast and holds four persons comfortably. The air-cooled motor can be from 21/2 to 6 hp.

4 page(s)

Building a 19-Foot Tunnel-Stern Boat (Pub. No. 7854)

The following boat has been used on the Mississippi River for two seasons and has been very satisfactory. She was designed especially for river use and draws only twelve inches of water. She is a flat-bottomed boat, but when she is in the water this is not noticeable, and, with her long front deck, is a very classy-looking craft. The cockpit is large and the lockers have ample room in them to stow everything that is necessary. The engine, being under the front deck, is out of the way, with no danger of engine trouble from rain or spray; there is also lots of room for engine supplies, making it possible to keep the cockpit and lockers clean. She is easy to build, even the tunnel, as shown, being very simple. Any one who can saw a board or drive a nail can build her.

3 page(s)

Building a 151/2-Foot Useful Sharpie for Power (Pub. No. 7855)

Two-in-one is a practical little boat intended for all-around service. She is a motor boat in every sense of the word and, as shown, fitted with sail and centerboard, makes an ideal craft for the man with the summer cottage or the chap who enjoys short party sails and fishing trips.

4 page(s)

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