Power Boat Plans

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Septa--A 12-Footer (Pub. No. 5331)

by Robert and George Schleier

This interesting 12-footer has a novel convertible top and foredeck anchor hatch.

Septa, the seventh boat built by this father-and-son team, is a 12-footer, with a 54-inch beam, having a foredeck with a hatch, a cross deck amidships and a novel convertible top. With an 18hp outboard motor she does a good 22 mph which is sufficient speed for skiing, not to mention getting to your favorite fishing grounds in a hurry. When the going is rough, her vee forward section cushions the impact, taking large waves without pounding. The flaring bow tends to make her a dry boat. She has simple, clean lines and her seaworthiness was proved to us during hurricane "Donna" when we found it necessary to buck the elements in her to get out and check the mooring lines on our 25-footer. The teeners like her because of her neat appearance, speed and her roominess which provides plenty of storage space for such gear as the necessary boat equipment, skis, scuba equipment, and, of course, there must be the radio and the refreshments. Three can comfortably seat themselves in the fore cockpit and have adequate protection from the elements or enjoy the cool shade under the convertible top.

14 pages, 4 plate(s)

8.01€
Building the Cruiser Baby Betty II (Pub. No. 5334)

by Sydney M. Higgins

A completed detailed design, specifications, and building instructions for an attractive 42-foot vee bottom cruiser.

Baby Betty II is an enlargement and refinement of a Vee-Bottom cruiser designed some years ago, from which five known boats were built, with the idea in view of being purely a family boat which could be easily and cheaply built and at the same time have the required cruising radius, seaworthiness, and boaty appearance. It is an original design and has ben carefully worked out for the theoretical and technical data, such as stability, center of buoyancy, trim, etc., and the weights have been distributed os that the vessel will trim at its designed raft, as sown in the profile plan.

40 pages, 7 plate(s)

8.91€
Comet--A 16-Ft. Runabout (Pub. No. 5336)

A fast 16-ft. runabout with plywood-plunked hull and inboard power, using a regular marine engine or a jeep conversion.

Modern in design and smooth in performance, this smart looking runabout will carry five passengers with speed and comfort, and yet be suitable for an occasional day of fishing or general utility use. The V-bottom hull is 16 ft. overall by 5½ ft. beam and has a forward cockpit seating two, an engine compartment amidships and an aft cockpit with room for three, plus space for fishing gear or supplies. Plywood planking makes the boat practically leakproof, light enough for trailer carrying and yet gives it ample strength to stand reasonably hard service.

11 pages, 3 plate(s)

7.12€
Flyer--A 12-Ft. Outboard Utility (Pub. No. 5338)

A 12-ft. V-bottom outboard with simple, plywood hull that can be built as a decked-in sport runabout or open utility for fishing.

Double duty is the word for this fast outboard that combines the speed of a runabout with the carrying capacity and general all-around usefulness of a utility boat. A composite V-bottom hull with semi-convex bottom section and moulded non-tripping chines makes this combination possible. The simple, plywood construction produces an attractive boat that is light in weight, sturdy, and permanently leak-proof. If a hull of the double-cockpit type is desired, the regular construction procedure is followed, but when the boat is finished, deck beams are added and openings cut for cockpits. The deck is then covered with ¼ in. waterproof plywood. For utility use, a small outboard from 1 to 6 h. p. is recommended or an air-cooled inboard may be installed.

8 pages, 2 plate(s)

7.12€
Flying Fisherman (Pub. No. 5341)

A fast, outboard utility. 11 1/2 feet overall, with an easily-driven bull, plunked with plywood or thin cedar.

Whether you like flashing speed or a leisurely trolling pace, this all-around utility boat will fill the bill. With one of the big twenties hung on the transom, she’ll plane smoothly along at high speed and give you all the thrills of riding in a regular speedboat. Or, if you’re one of Izaak Walton’s followers and prefer a more leisurely speed, a lightweight outboard kicker will still get you and a friend or two, plus all your gear, to your favorite fishing grounds in good time. The versatile hull is soft-riding, turns on the proverbial dime and because of its size and light weight will ride on top of your car. Although it was designed for regular plywood planking, you can use thin cedar stock, backed up with seam battens and canvas covered.

8 pages, 1 plate(s)

7.12€
Eclipse, A Hand 40-foot Express Cruiser (Pub. No. 5343)

Designed by William H. Hand Jr.

Now all you speed motor boatmen, here is your chance. The variety of boats for which we are publishing the plans is complete. We have had little boats, big boats, runabouts, cruisers, and auxiliaries. Here is a brand new one. Eclipse is an express cruiser of the utmost refinement and most up-to-the-minute features. In 40 feet of length Mr. Hand has succeeded in securing every desirable advantage of the much larger boats. Complete accommodations are provided for cruising with four or more persons and the necessary facilities are ample to care for the full personnel with every comfort. This boat follows along the lines developed by the famous express cruiser Flyaway III. This cruiser established many enviable records in competitions of all sorts. Long-distance races had no terrors for it. Inland waters, or the open Atlantic, it was all the same. Flyaway was always on deck and most generally the first to finish. Our cruiser this month follows the conventional V-bottom practice developed by Mr. Hand. The sections have been designed to give the maximum of speed and seaworthiness for the minimum power installed. Working on the theory that the outside deck and cockpit space is the portion of the boat which the majority of boatmen use the most, this design has been particularly developed to allow the utmost possible outdoor space. The interior has not been neglected, however, in order to accomplish this. The arrangement inside is as follows: Storage for lines and deck gear is arranged in the forepeak. A roomy lavatory comes next with a pair of good sizable wardrobe closets close by. The cabin proper is fitted with a pair of sliding transom berths which afford ample sleeping accommodation. Some more closets are provided just adjacent to the galley compartment. This is completely equipped with stove, refrigerator, sink, dishracks and all necessary fittings. The motor selected for this boat is a model F. S. six-cylinder Sterling which is compactly installed under the bridge-deck floor and just aft of the aftercabin bulkhead. Plenty of room is provided on all sides in order to allow of easy access to all parts of the motor and also to give it some breathing space. A motor which is hidden away in an inaccessible corner is neglected and when it is treated this way its usefulness is soon impaired or destroyed altogether. Roomy seats are provided on each side of the bridge-deck space for the operator and some guests to remain comfortably seated while the boat is under way, and a further seat the full width of the after end of the cockpit makes an ideal place to sit and snooze while the boat drives along at a merry clip.

This Is What Mr. Hand Says About Eclipse

Here is a safe, sane, and wholesome motor cruiser of a type which has been developed to a high degree of efficiency, and is exceedingly popular. The predecessor of this V-Bottom is the old “Flyaway Ill,” probably the first real express cruiser, and a boat responsible for a marked change in the development of the express cruiser type. The arrangement is one which seems to use the space to beet advantage. The cabin provides sleeping accommodations for four with adequate toilet and galley. The cockpit is large, and there is, plenty of deck space. The average motor boat user spends at least 75 per cent. of total time on board in cockpit or on deck, therefore, it is believed that sufficient deck space and cockpit room is quite as desirable as the maximum sleeping accommodations, something which is frequently overlooked in planning small cruisers. With the power plant designated, this little cruiser will maintain a speed in excess of twenty miles, and be able to go anywhere along the coast In the summer months quite as safely, and far faster, than the average boat.--WM. H. HAND, JR.

15 pages, 4 plate(s)

8.01€
Handy Andy--A 13-Ft. Power Scow (Pub. No. 5345)

by Hi Sibley

An inexpensive 13-ft. power scow with an air-cooled engine: for hunting, fishing or use as a workboat.

Designed to take any one of the low priced, air-cooled engines that are on the market today, this husky scow is about the cheapest and most practical form of power craft that you can build. An though she's no beauty for appearance, there's a world of utility packed in her snub-nosed hull. If you're interested in low cost transportation for fishing, and want to take along a friend and all your gear, Handy Andy is the answer. On the other hand, if pintails or greenheads are your game, you'll find the 12-in. draft of the scow ideal for poking about in marshes and the shallow waters where ducks feed. And last but not least, if you work for a living on or about the water, you'll find a dozen different uses for the scow, such as clamming, tending lobster pots, hauling supplies and towing larger craft in a boat yard or yacht club.  

4 pages, 2 plate(s)

6.22€
Snuffy--A 12-Ft. Utility Boat (Pub. No. 5347)

A 12-ft. utility craft that’s light enough for one man to lift yet ruggedly built for rough going. The simple plywood hull is leakproof and requires little upkeep.

If you've got a car and live within driving range of a lake or river, then Snuffy will solve the problem of having a boat for fishing or camping trips without paying costly mooring or storage rates. Because she’s light in weight, you can get her on the roof of your car without a lot of fancy tackle and with the outboard tucked away in the trunk, take off for your favorite spot. For her compact size, the boat has a surprising amount of room and even with a full load aboard, is easily rowed or driven by any small outboard from 1 to 10 hp.

8 pages, 2 plate(s)

7.12€
Voyageur--A 28-Ft. Power Cruiser (Pub. No. 5348)

A 28-ft. power cruiser with comfortable accommodations for four, a large protected cockpit and double-planked hull.

Combining modern design with simple construction, this trim and seaworthy cruiser offers the amateur builder comfortable living afloat, and at a reasonable cost. For the man who wants to take his family or a small party of friends on a cruise for a few weeks or a month and keep the expenses at a minimum, the boat is ideal. The accommodations plan shows a good-sized trunk cabin with two full-length berths, the backs of which swing up to make two equally large, upper berths, sleeping four in all. Forward of the main cabin to starboard, there’s a fully-equipped galley with sink, stove and a large ice box. On the opposite side to port, is a lavatory and full-length clothes locker. Additional stowage space is provided under the berths. The headroom throughout the house is six feet, one inch, which is unusual for a boat of this size. The cockpit is exceptionally large and protected by a canopy, making it perfect for fishing parties. All steering and engine controls are grouped on the cabin bulkhead at a point affording excellent visibility through the windshield. As the lines show, the hull of Voyageur is a V-bottom type with good freeboard at the forward stations to keep the decks dry in even the roughest going. The boat is a shade more than 28 feet overall, has a beam of nine feet, seven inches and with equipment and four people on board, weighs about 6,000 pounds and draws slightly over two feet of water. The power installation shown on the plans is a Universal Flexi-four engine, developing 40 hp and weighing about 455 pounds. However, any similar engine of the same weight and horsepower may be substituted, provided it is installed at the exact location shown on the plans. This is very important if the boat is to trim and balance properly. It is equally important not to make any changes in the locations of the other major weights in the hull, such as the tanks, toilet and galley equipment, etc. Before getting on to the actual building operations, a word about the double-planking which consists of two layers of regular ¼ in. waterproof marine plywood laid in standard 4 by 8-ft. sheets. The first layer is fastened to the framing with screws and one of the waterproof glues that have been developed especially for marine use. The second layer of plywood is then fastened in place, staggering the seams and butts and using the same glue between the layers. By screwing both thicknesses to the frames and using short screws to hold the layers together between them, the result is virtually one piece of planking that should remain free of leaks for the life of the boat.

16 pages, 4 plate(s)

8.01€
Skylark--A Sea Skiff (Pub. No. 5350)

A 13-ft. sea skiff with an easily-built plywood hull that can be sailed or driven by an air-cooled inboard engine.

Originally developed by fishermen and others who make their living on the water, the sea skiff design is one of the best hull forms for a small boat, It is quite seaworthy for the overall length, exceptionally dry in a chop and even with a full load aboard, is stable and easily driven by oars or a small inboard engine. With a simple inboard rig and dagger board, she’ll balance perfectly and sail like a charm. Most important of all from the builder’s standpoint, is that the construction is simple and because of the plywood planking, presents no difficulties for even the beginner.

8 pages, 3 plate(s)

7.12€
Whizz--A 21-Ft. Inboard Cabin Cruiser (Pub. No. 5356)

by W. D. Jackson, N.A.

Sleeping accommodation for two ensures that this boat won’t grow to its moorings. Construction is quite simple.

This boat, Whizz, should appeal to those who want their cruisers fast, sporty and small enough to carry by trailer. A small cruiser meant for overnight trips or weekend cruises, it will sleep two persons on cruises and accommodate a party of four for afternoon excursions. With a dependable 50 to 60 hp marine engine or a converted, lightweight high speed car motor, it will make 20mph or better.

10 pages, 2 plate(s)

7.12€
Victory--A 12-14-16-Ft. Runabout (Pub. No. 5357)

By changing frame positions, you can easily lengthen this outboard runabout.

All requirements for an outboard runabout are met in the Victory sport runabout. Due to a proven method of bottom design, the hull is fast, stable, handles well at all speeds with different sized motors, and has trim and attractive lines. Built of waterproof marine plywood, the construction is simplified and produces a lightweight, strong hull suitable for many uses. To meet every possible requirement of readers, the hull is designed so that it can be built in 12, 14 or 16 ft lengths by making a few simple changes in these plans. This boat is a good project for winter work.

12 pages, 2 plate(s)

7.12€
Cobra--Fin-Tailed 15-Ft Runabout (Pub. No. 5361)

by William D. Jackson, NA

A Fin-Tailed 15-foot Outboard Runabout

Used with any outboard motor from 10 hp to 50 hp, Cobra will achieve speeds of from 20mph to 45 mph and will leave most kit or professionally-built boats well In its wake. At wide-open throttle, this craft rides on top of the water with a minimum of disturbance and, because of its bevelled chines and trim tabs, ft can make abrupt turns safely and without waste-effort spray.

12 pages, 5 plate(s)

8.01€
Sea Scout--A 13-Ft. Inboard Runabout (Pub. No. 5363)

by William D. Jackson, N.A.

Be prepared for fun with this 13-footer.

Sea Scout is the type of boat it's name implies—a small inboard runabout with single cockpit destined for use by one to three persons and for fairly high speeds with comfort not found in outboards and convenience comparable with a coupe ashore. If marine plywood is used in the construction, the finished boat will be stiff, sturdy, leak-proof and quite fast, especially if powered by any of the lightweight, high speed marine engines or, if properly converted, there is no reason why any high speed, lightweight auto engine—not exceeding 65 H.P. shouldn’t be used. With an engine of the proper size you’ll have speed and convenience in a sporty little inexpensive craft it’ll be a pleasure to own.

7 pages, 1 plate(s)

6.22€
Two Sisters--11-Ft. and 13-Ft. Skiffs (Pub. No. 5366)

by Edson I. Schock

Big Sis and Little Sis are both members of the skiff family, even if they are not twins.

Both are fine for rowing and for use with outboard motors. Big Sis is just over 13 feet in length, and Little Sis is two feet shorter. Each will build with minimum trouble and expense. Each will bring happiness for years to come These skiffs were designed as good all-around boats for fishing, picnics, rides, camp utilities, or work boats. The smaller boat is well suited to an outboard motor as she is straight along the bottom and will not squat under power. The larger skiff is cut up at the stern which makes her easier to row. She also would be all right under power at slow speeds, but would not be satisfactory with a large motor, since she would squat at speed. About 21/2 horsepower would be plenty.

4 pages, 4 plate(s)

6.22€
Pop Gun--An Air-Cooled Inboard Motor Boat (Pub. No. 5367)

by Weston Farmer

Here is a sweet little motorboat with air-cooled inboard power.

She will make a fine fishing boat, especially for trolling, as she has a screw-feed throttle. For ease of construction using standard boatbuilding techniques, the dory is hard to beat. Such a dory hull is Pop Gun. From the design shown here you will get what I think is one of the finest low-pressure launches ever floated. The modified dory is time-tried. It was originated by down-East builders over 50 years ago for saltwater use. Here in Pop Gun I have merely modified the modifications so as to remove all traces of crankiness, so there is nothing experimental about her. She resembles closely the product of any of a half-dozen eastern seaboard boatshops. Hundreds of such boats have been built, powered with air-cooled inboard engines of the air-cooled industrial type, such as the 1 hp Briggs and Stratton, or the inboard Lausons, made by the Lauson Mfg. Co., New Holstein, Wis., or the Wisconsin, made by the Wisconsin Motor Mfg. Co., Milwaukee, Wis. The Pop Gun shown here is Briggs and Stratton powered, 1 hp, using a 2-blade left-hand outboard prop, 9" diameter by 7” pitch. Speed, about 7 mph. The whole idea of the boat wraps up into a rig in which you can turn the kids loose for a day’s exploration secure in the knowledge they’ll be back in time for dinner if they have sense enough to know when to turn around. They cannot capsize her, and her gas tank, magneto—the works—are in one hunk, rainproof and get-at-able under the deck. She’ll go all day on 50 cents’ worth of gas. And despite the fact that it usually rains Saturdays, Sundays and holidays when Dad gets her, she is a trolling boat with a nifty nose for fish. In this department Pop Gun will be a companion of the hunt in the same sense a good retriever is. By using a plain screw-feed throttle rod from deck to carburetor, you can adjust the chuff and blat of Pop Gun’s exhaust so delicately you can get exactly the trolling throb you want. Dressed then in slicker and storm hat, you can ghost all day in the drizzle and snake in your strikes. Under the deck the motor will be dry and won’t change pace. The process of building Pop Gun is simple. It will be old hat to any man who can get a smooth cut.

10 pages, 2 plate(s)

7.12€
Scram Pram (Pub. No. 5370)

by Weston Farmer

Designed as a utility speeder, this simple craft will prove thrilling to handle when powered by motors of not over ten horsepower. She will make an out-and-out racer with the addition of a small steering bridge. She is an ideal boat for the novice to build.

Scram pram is not the latest mechanized plywood version of a Chinese junk, though her name smacks that way. “Scram” is Old English, meaning “to scuttle.” “Pram” is also English—the term for a sawed-off punt. Therefore Scram Pram is really a scuttle punt. Her form is hundreds of years old. Why bother, then, you ask, to publish something that is essentially ancient? Hah! There’s something new on the marine scene that brings the old British pram into her own: Plywood and light outboards with real wallop. This combination of low-pounds-per-horsepower likes to plane. Now plywood comes to you as a plane surface. The trick of screwing these plane surfaces to a form, deflecting them to curved surfaces as little as possible, requires a simple form and frame. This is where the pram form steps up and says, “I’m it!'

11 pages, 3 plate(s)

7.12€
Sundance--An Outboard Cruiser (Pub. No. 5371)

by Weston Farmer

The basic function of any cruiser is to go places, and this technically excellent little cruisemite is designed to do just that—she’ll build from materials obtainable everywhere, and you can count on her to handle big water.

If you are one of the many who are dreaming of an outboard cruiser, you will do well to read of Sun Dance here. She is distilled out of an experience with outboard “cruisers” which stretches over the last 26 years. It was in April of 1928 that the plans for the first planing V-bottom outboard cruiser appeared in print. This boat was named Quadster. She was designed for the then new 18 hp four-cylinder Elto. A great many of these hulls were built. I had the good fortune to have designed her, and have designed a number of others since then. Now, as I get into the business of planning the latest of this line of successful boats, I have again been involved in doping out a hull shape which will best fit the real usage to which such a craft is put. Again I come to the same basic conclusions about outboard cruisers. Out of this has evolved Sun Dance—an excellent bottom, a hull made a little better by a knowing arrangement plan, but basically embodying the same integrity toward wind, wave, rain and motor that has characterized the earlier hulls. They were all dandy boats.

12 pages, 4 plate(s)

7.12€
Poor Richard--A 21-Ft. Skipjack-Type Power Cruiser (Pub. No. 5372)

by Weston Farmer

The Chesapeake skipjack hull is more noted for economy and ease of building than for good looks, but in Poor Richard, designer Weston Farmer has turned his talent for lovely boats to producing a skipjack with yachty lines. On one basic hull you can select an arrangement of your own choice.

Benjamin Franklin's proverb boy, Poor Richard, made great virtue of economy. Since economy is her greatest virtue I have christened this skipjack hull Poor Richard. Usually if one goes to the native builders on any great regional body of water he finds a-building there boats that are perfect for local conditions. This is true of the Chesapeake, which the writer knows well. The Bay is a varied body of water, shallow in spots, narrow in some, deep at places, and is both fresh and salt. The native boat of the Chesapeake is the diamond-bottom boat, grandfather of the modern V-bottom boat, and is called locally a skipjack. Skipjacks are good in fresh- and salt-water behavior. They love a chop, are fine in a wind, and drive easily. They are, moreover, very inexpensive to build. Now any boat that Father Neptune has liked as a type for hundreds of years is bound to make a good knockabout hull on which the back-yard boatbuilder may add his own private arrangement plan. To show the versatility of the type, I’ve drawn eight adaptations on the 21-foot hull for which the basic offsets and constructions plans are given.

12 pages, 3 plate(s)

7.12€
How to Build Kathy--A 20-Ft. Outboard Runabout (Pub. No. 5377)

by Don Rodney

The arrangement plans reveal full-length berths extending under the forward cockpit, galley, toilet and stowage space.

A friend said to me, “To satisfy my various likes and dislikes,” he replied, “I would need to own two boats; an outboard runabout for breezing about on the lake during the day and an outboard cruiser for ‘gunk-holing’ and overnight cruising. I like the runabout with its windshield and open cockpit where you can sit up forward on comfortable cushions and clearly see the water ahead. I also like the runabout because one can get farther away from the motor. On the other hand, while I like all the cabin accommodations of a cruiser with its comfortable berths, galley and toilet, I don’t like the arrangement with the wheel on the after cabin bulkhead so that one must do all his navigating while trying to see out over a long cabin top. A wheel within the cabin structure is not the answer to that problem either. I get claustrophobia when I am confined within a small cabin and can’t get out to handle dock lines and one thing and another. If someone would only combine an outboard runabout and an outboard cruiser into one boat, perhaps I would be interested.” “What you are looking for,” we said, somewhat facetiously, “is an outboard cruis-about.” We didn’t have any specific ideas on this type of hybrid design but one afternoon, we came upon an advertisement for a Matthews cruiser complete with forward cockpit. The forward cockpit was nothing new to us but what did interest us was the fact that the berths were extended up forward under the cockpit seat, thus saving a few feet in overall length. This gave us the clue as to how we could arrange a forward cockpit, a roomy cabin with full-length berths, a galley and a semi-enclosed head, plus a six-foot after cockpit; all in a boat only 20 feet in length.Beginning at the bow we find the customary rope locker beneath the forward deck followed on the upper level by the forward cockpit. This is complete with a curved Plexiglas windshield and spray wings. Complete controls mounted in this location will permit full control of the outboard engine as far as forward and reverse shift and throttle control are concerned. With the canvas top cover in place, there is no reason why this forward seat should not be used as an auxiliary berth since it is over six feet in length and comfortably wide. Access to the cabin interior is through the bulkhead door on the starboard side. This door is divided similarly to a “Dutch door” for a specific reason. For ventilation purposes the top half of the door is hinged along its upper edge so that it can be folded inward against the cabin ceiling where it is hooked in place. The bottom section is hinged along its outboard side and swings back into the cabin. Since the lower section also forms the backrest of the right-hand portion of the cockpit seat, it will normally be closed and latched in place. The top half can be left open for ventilation or closed as desired. Inside the cabin structure, the typical outboard cruiser arrangement of two generous, 6-foot 6-inch berths is to be found. These run fore and aft along either side of the hull and make use of the available space under the forward cockpit which otherwise would be useful only for stowage. The two berths are spaced approximately 26 inches apart so that there is formed a liberal gangway or walk space running the full length of the cabin. This gangway leads into the galley on the starboard side and the head on the port side. These units are separated from the berths by partial bulkheads rising about 41 inches above the floor. Opposite, on the port side, is a raised platform of the same area as that occupied by the galley. Here is mounted a pump-type marine toilet. By the installation of a curved curtain pipe, as shown in the plan layout, this area may be curtained off for greater privacy. Careful attention has been given to the matter of private locker space by the inclusion of three fair-sized drawers, one under each of the two berths and the third sliding under the center extension between the two berths. Additional stowage is available under the berths through the handholes provided and also under the forward cockpit floor ahead of the berths. At the rear of the cabin enclosure is a folding door which leads out into the after cockpit. It is double-hinged so that it will fold flat against the cabin bulkhead without covering up the toilet window. Almost on the level with the cockpit floor is a screened, louvered vent to allow additional ventilation throughout the little ship. Plenty of cabin ventilation while lying at a mooring does much to prevent mildew and discourage dry rot. The after cockpit is approximately six feet square and affords a comfortable lounging space for a limited number of occupants whether under way or lying at anchor. The motor box which covers the outboard engine is sound-insulated to suppress most of the noise. This engine box is not entirely without use and an unwanted obstruction in the cockpit for it is about the correct height for sitting and makes a good seat.

20 pages, 4 plate(s)

8.01€
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