Sail Boat Plans

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Skippy (Pub. No. 7049)

by Charles G. MacGregor

LOA 11 ft. 8 in., BEAM 5 ft., DRAFT BOARD DOWN, 3 ft., SAIL AREA 72 sq. ft., WEIGHT about 160 lbs.

Following is a list of the material required to build this boat. Many of the smaller items such as seat cleats, etc., are not included in this list but they can be made from scraps. Also where 1 inch thickness is specified for floors it is intended that 7/8 inch or better should be used, as much as can be obtained from the 1 inch rough stock after it is dressed. If preferred, Philippine mahogany or African mahogany may be used in all members. Do not however use oak on a glued watertight seam.

4 page(s)

Pup--A 12-Foot Cat (Pub. No. 7053)

Designed by William F. Crosby

LOA 12 ft., BEAM 5 ft., DRAFT (board down) 3 ft. 6", SAIL AREA 60 sq. ft.

The plan for the little boat presented herewith makes use of plywood throughout except for the keel, chine pieces and clamps. The sides may each be made in one piece and the bottom may be composed of two pieces, one for each side. The fact that it is only 1/4 inch thick need cause no concern because this is actually stronger than the material usually used in boats of this type. The skin of the boat is also reinforced by five sawn plywood frames and intermediate frames and stringers that leave but little of the surface unsupported. Before going any further, we wish to point out the fact that ordinary plywood is not suitable and will not stand up when used this way. The material must be Resin Bonded Waterproof plywood in which the bonding agent between the plys is phenolformaldehyde. It is highly important to use this type material for ordinary plywoods will buckle and separate in no time. The little boat is 12 feet long and 5 feet wide. She is a vee-bottom, having a very slight vee, and is rigged as a Marconi cat. The only real weight in connection with the hull is in the center-board and it is highly important to follow the specified material and size closely. Iron, not being as heavy as bronze, should not be used unless it is at least 1/16 inch thicker. It will be noted that there is no external keel on this hull. Instead the two bottom pieces of plywood come right down to the centerline where they are mitred together. For the entire length of the boat an inside keel is used the under side of which is veed downward to the exact angle that the bottom pieces form. A small molding may be used to cover the seam in the bottom pieces, but it is not necessary.

4 page(s)

15-Foot Keel Knockabout--Breeze, The (Pub. No. 7054)

Designed by Charles G. MacGregor

LOA 15 ft. 8 in., BEAM 5 ft., DRAFT 2 ft. 6 in., SAIL AREA 111 sq. ft.

Here is presented the design of a plywood fin keel sloop.

This boat is intended for the more ambitious builder in plywood. She is suitable for day sailing and racing; can be easily transported by trailer, and if necessary the fin keel may be removed in a few minutes by backing out the keel bolts. The material specified is intended for salt water use, and substitutions are not recommended without competent advice. The form of the hull is such that no difficulty will be experienced in bending the "planking." The twist at the forefoot of the usual vee bottom form has been eliminated by adopting the skiff form of bow adapted to the conical stem. This conical stem not only adds to the appearance of the boat but permits a certain amount of flare and eliminates the necessity of twisting the forward end of the topside planking into a vertical plane which occurs when the ordinary stem is used. The bottom is slightly vee form. It had been suggested that an arc bottom be used similar to the Star class hull. This would be excellent but it is practical only within certain definite limitations of panel length and width. For instance a 3/8" panel 42" wide and 25' long may be given a transverse arc of 21/2" and a longitudinal arc or upsweep of about 5" at each end. Beyond this point the plywood will crimp along the edges. The arc form is therefore impractical in a boat of the size and type of Breeze. The vee bottom was adopted in preference to a flat bottom. It is a little more difficult to build but its advantages in this type of boat are well worth the extra trouble.

4 page(s)

Jacana--A Skiff for Racing or Day Sailing (Pub. No. 7058)

Designed by Charles G. MacGregor

LOA 14 ft. 6 in., BEAM 4' 8 in., DRAFT C.B. 3 ft., SAIL AREA 96 sq. ft.

Jacana is a fine looking, modern boat of nice form, being stable, fast and relatiuely easily built and she has no hard nips anywhere in her and was laid out, of course, especially to take waterproof plywood planking. The fixed draft of the boat wlaen the rudder is in place (to the bottom of the rudder, in other words), is about 14 inches.    She carries, 96 square feet of sail which is plenty because she is a light boat. It looks like more because the plan is so well balanced: The sail is divided up as follows: mainsail 71 square feet jib 25 square feet. It is passible to carry a larger overlapping jib which would be the same hoist as the working jib but 7 feet 9 inches along the foot. Your sailmaker can lay it out from those dimensions if you show him this sail plan.

4 page(s)

How to Build Peanut (Pub. No. 7701)

by W.F. Crosby

Complete instructions for building a lap-streak dinghy. May be built 9, 10 or 11 feet long. Will work out well with a sail.

The construction of a small, light round-bottom dinghy such as Peanut is one that calls for some skill in the use of wood working tools, a degree of patience and the ability to read and understand the plans furnished herewith. While not as easy to build as the ordinary flat-bottom type of dinghy, the lapstreak round-bottom job has considerably more class and is always in demand by yachtsmen.

3 page(s)

Tangierman--A 32-Ft. Skipjack (Pub. No. 5308)

by J. A. Emmett

Tangier Man is no new type but a true Bay skipjack. Her hull lines are exactly those of the larger dredge boats which work all winter long down on the Chesapeake, in weather good and bad, dredging oysters under sail, power not being permitted for this work. Aside from the true sharpies this deadrise type with its cross-planked bottom is perhaps the cheapest and easiest kind of boat for its size not only to build but to maintain. Low cost materials can be used in her construction but to have her look well care must be taken with the building: she will be shippy looking and in keeping with her type if joints are carefully fitted and fastenings correctly driven. She is not a small boat by any means, and heavier than ordinary materials are used in her construction, but this has been laid out with home building in mind. She is a little large to be tackled as one's first attempt at boat building but is an excellent proposition for the man who wants something larger than his present craft and who has some idea of boat building procedure. If he has previously constructed one or two small boats, so much the better. And best of all is the fact that most of her fittings and gear can be homemade, making her completed cost perhaps half that of a yacht-type boat her size. Skipjack hulls are very shoal draft—Tangier Man draws only 2½' with her board up—and they are low-sided. This limits headroom in the cabin to 4', but aside from this there is exceptional accommodation aboard with more than usual deck and cockpit space. This headroom is not so bad—anything between this and enough to really stand erect is apt to be a nuisance in that you're as likely to bump your head with 5 foot headroom as with 4. As it is, there is good sitting-up space over the settee and berths and the large companionway hatch will be appreciated by the cook. The bridge deck and cockpit give ample room for outdoor living—and that's where a crew spends most of its time aboard, especially in warm weather, whether it's sailing or merely lounging. Do not attempt to gain more headroom by raising the sides of the hull or house—too many deadrise boats have already been spoiled both as to appearance and sailing qualities by doing this.

13 pages, 5 plate(s)

Broadbill--A 33-Ft., 9-Ton Tancook Schooner (Pub. No. 5310)

by I. A. Emmett

Nova Scotia's harbors, as you'll know if you've ever been there, are chock full of as lovely schooners as any sailing man might wish to see. Able boats all of them, and invariably slim and fast to get about under sail alone. Shelburne and Lunenburg builders turn out the larger boats for Banks fishing but Tancook Island in beautiful Mahone Bay is the home of the little Tancookers; schooner-rigged boats from 25 to 50 feet, some with the usual transom stern, others double-enders. Broadbill is the latter type modified slightly to put power aboard but otherwise as fast and able as the Island boats. She is designed for easy and low cost construction within, of course, the limits of the round bilge type and the room aboard. While construction is on the heavy side, the main members are reasonably small, the keel comparatively short and straight with no edge shaping required, and all ballast with the exception of the grounding shoe of stock bar iron is carried fisherman fashion inside.

22 pages, 6 plate(s)

How to Build Frisky--A 17-Ft. Racing Sloop (Pub. No. 5314)

by J. Julius Fanta

A 17-foot jib-headed racer that meets the popular demand for a racing craft combined with a knockabout for 1eisure1y afternoon sailing.

Frisky is specially designed to fill a double bill embodying a fast hull, 'with sweeping lines and novel features. She has a shallow forefoot, a factor that makes her fast, particularly in running before the wind. With the crew's weight shifted aft to lift the bow, the effect is virtually planing. The graceful sheer adds to the freeboard forward to make for dry sailing. Ample beam, six foot plus, makes this craft stiff in strongish winds. Frisky is a good sail carrier in heavy going with her tall rig.

13 pages, 4 plate(s)

Picaroon II--A 20-Ft. Auxiliary Cruiser (Pub. No. 5316)

by S. S. Rabl

Many will recall the boat Pixie. Pixie proved very popular indeed, and more than a few of her are riding at anchor at this moment or sitting on cradles for the winter, depending on their latitude—boats that were built by readers of the previous edition who decided Pixie's design nicely filled their requirements. As a result of numerous requests from other readers, a modified version of this boat with various improvements has been designed and is presented herewith. The new craft, named Picaroon II, has the same basic profile as Pixie and some of the parts, such as the rudder and keel casting are identical. Her hull, however, is of quite different construction and bears little sectional resemblance to her forerunner's. Picaroon's plans literally show two separate boats, one having a round bottom hull, and the other a Harborform or multiple chine hull. The round bottom version must, of course, be planked up in the regular manner, while the Harborform is constructed of marine plywood. The actual result of this multiple chine construction is the achieving of a craft with all the desirable qualities of a round bottom boat, yet having the building simplicity of the vee bottom type (which the original Pixie was) coupled with the advantages of marine plywood.

16 pages, 9 plate(s)

Polar Bear--A Ten-Metre Ice Yacht (Pub. No. 5320)

Organized ice yacht racing is increasing rapidly. As with sailing yachts, successful competition in racing depends largely on restricted classes or one design boats. And what a thrill there is in racing at a mile-a-minute! The Polar Bear was developed for class racing at the Maumee Bay Ice Yacht Clubs, Toledo, Ohio, and has proved to be a very popular and successful boat. In general appearance it is somewhat similar to the larger and more expensive 15 metre class, and these speedy little boats will doubtless be widely adopted elsewhere for class racing.

7 pages, 2 plate(s)

10-Ft. Sailng Dinghy (Pub. No. 5322)

by Alvin M. Youngquist, N. A.

Enjoy year 'round sailing with a craft that's the equal of an expensive professionally-built dinghy.
This wide-plank, lap seam sailing dinghy is also very serviceable as an all-purpose rowboat—for fishing, as a yacht tender, or small outboard motor boat. Because of the high freeboard its capacity is surprising—it will carry three adults with plenty to spare. Let the youngsters learn to sail in this able little craft. It can be set up for sailing in a very few minutes. A loose-footed jib-headed cat rig as indicated on the plans can be used, or a simple spritsail rig as shown in the photographs. No stays are necessary, and the hollow or solid mast is lifted out when not in use. The mast is stepped on a bearing so as to turn with the sail. It is equipped with an outboard wood rudder, and a ½" steel centerboard that can be easily lifted out.

6 pages, 4 plate(s)

Poco Dinero--A 20-Ft. Auxiliary (Pub. No. 5323)

Designed by John G. Hanna

There may not be any such thing as the perfect small sailpower cruiser for amateur builders, but "Poco" will do until it comes along! Twenty feet of real boat from the board of one of the nation's foremost naval architects: a man who has a genuine understanding of the problems an}d requirements of backyard boat builders.

If you are up on your SpaAish, you know that poco dinero (pronounced dee-nayro) means "little money." And that is the idea behind this design. It is intended to be built of the cheapest standard stock sizes of lumber, available anywhere, and with the least labor, and no specially difficult or skilled work required. It's not a "yacht." It's just plain old-fashioned boat, built on lines and principles proved good by many generations of use. It's tough enough to stand almost any bad-weather beating, and you can use it hard for years and years and still have a sound, tight ship. In brief, it's the bet for the conservative man who wants to put his few hundred bucks on a sure thing, and let George experiment with the newest models and latest inventions. There are loads of plans available covering all up-to-the-minute styles, and there is plenty of room on the seven seas for both you and George.

13 pages, 4 plate(s)

Thunderbird--A Racing-Cruising Sloop (Pub. No. 5325)

by Ben Seaborn, N. A.

This 26-ft. racing-Cruising sloop is a fine example of good design and proper application of materials.

If you've never before built a boat, this plan may at first seem discouragingly complex. It really isn't. Naturally a boat plan can't be as simple as a plan for, say, a bookcase. On a boat there are few straight lines. Parts curve up, down and sideways. And because many of these parts are rough-shaped, somewhat oversize and  trimmed to fit as they're assembled, boat drawings are hard to dimension precisely.  

20 pages, 9 plate(s)

Silverfin--A 20-Ft. Sailboat (Pub. No. 5330)

by C.P. and E.D. Burgess

This fast-sailing 20 ft. plywood sailboat has nice lines, was designed for a crew of three.

This fast sailing boat is to be built only of hot-pressed resin-bonded waterproof plywood on a frame of oak or ash. Be sure that every panel of plywood bears the grade mark "EXT-DFPA" which guarantees that it is manufactured to Bureau of Standards specifications for exterior use under the inspection of the Douglas Fir Plywood Association. All contacting surfaces should be glued together with waterproof marine glue, as well as screwed. By this construction you will - have a watertight hull that is far stronger and more enduring, as well as lighter, than any hull built by old fashioned methods out of materials available before the development of exterior type fir plywood.  

12 pages, 3 plate(s)

Corsair--A Gloucester Schooner (Pub. No. 5335)

by J.A. Emmett

A 42-ft. Gloucester schooner designed by IL I. Chapelle, that is fast and seaworthy, offers comfortable accommodations and is low in building cost.

The Gloucester-type fishing schooner, still popular in Nova Scotia today and years back along the New England coast, was used as a model for the lines and, rig of Corsair in order to meet a combination of rather unusual requirements. The first of these, ability and comfort in rough, water with a good turn of speed, are fairly common. However, the boat also had to have comfortable year-round living accommodations and yet be small enough for easy handling by a crew of two in summer cruising along the Atlantic coast. Added to these needs, was the fact that since the boat would be in constant operation, upkeep had to be low and any maintenance done by the owner. Most important of all, was the necessity of keeping the building cost as low as possible without sacrificing either the quality of materials or the construction. Now let’s take a look at the lines and body plan of Corsair Sand see what they’re like. They show a round-bottom hull with easy lines, graceful sheer and a long and well-shaped run that makes her fast for her size and type. Freeboard is high to keep the decks dry and the long, straight keel makes her an easy boat to hold to a course. The overall length on deck is 40 ft. 7½ in., beam 10 ft. 1½ in., the draft 4 ft. 10½ in. and displacement about 23,500 lbs. All ballast with the exception of an iron grounding shoe, is carried inside, fisherman fashion, and totals about 6 tons. Her rig is a typical gaff-headed, schooner type with 742 sq. ft. of sail area in the three lowers, divided up with 139 sq. ft. in the jib, 260 sq. ft. in the foresail and 343 sq. ft. in the main. Both of the solid masts are set up with lanyards and deadeyes in keeping with the period, and all sheets run aft to the cockpit for easy handling.

25 pages, 5 plate(s)

Victory One-Design, The (Pub. No. 5339)

An 18-ft. Racing Class with simple, all-plywood construction; designed by William F. Crosby, creator of the famous Snipe Class.

The primary purpose of a one-design racing class is to have all the competing boats as closely alike as possible so that the winning skipper finishes first, not because of finer hull lines or a more expensive craft but because of superior skill and seamanship. This is the most democratic form of sailboat racing and one that offers healthful relaxation to everyone of almost any age. For the youngsters or the beginners in boating, one-design competition is the finest training in mind and muscle that can be found. While the Victory can be used for day sailing or general knockabout use, you’ll get the most sport and find the boat at her best when she’s racing with others of her class. So show these plans to your boating friends, talk it up and get them interested in building a fleet of Victory’s. By building several boats at the same time, you’ll not only get more fun out of racing them but by combining orders for the materials you can reduce the cost considerably.

10 pages, 5 plate(s)

Frolic--A Cat-Rigged Sailing Dinghy (Pub. No. 5342)

A cat-rigged sailing dinghy, 11 feet overall, that makes an ideal boat for the beginner.

Learning the principles of sailing is much easier in a small boat like Frolic than in a larger sailboat. Not only is she more responsive to wind and rudder but her simple cat rig requires a minimum of handling and makes it possible for the budding sailor to get the “feel” of his boat much faster. On the practical side, the elementary plywood construction of the dinghy makes her a natural for the amateur builder and equally important keeps the total cost at a low figure. Now let’s see what the plans have to offer. They show a V-bottom hull that’s easily planked with plywood, and a high narrow rig with 77 sq. ft. of sail that makes the boat ideal for lake sailing in protected waters. She definitely isn’t a rough water boat as the rig is too high and the lack of side decks would make capsizing under heavy wind and sea conditions a dangerous possibility. The use of a metal centerboard is a “must” to insure good stability. The heavy board acts as ballast and makes it possible to drive the dinghy to windward in moderately heavy winds.

7 pages, 4 plate(s)

Sinbad--An Auxiliary Cutter (Pub. No. 5346)

by William F. Crosby

A modern 29-ft. auxiliary cutter that's fast and seaworthy; has berths for five, ful headroom.

Cruising in many small auxiliaries far too often means trying to sleep in berths designed for a midget and remembering not to crack your head on the cabin carlins when you stand erect. And yet as the accommodations and plans of this attractive cutter amply prove, there’s no reason why you can’t enjoy most of the comforts of home when you spend a weekend or a vacation afloat. Though she’s only 29 feet overall, this modern cruising boat will sleep five persons in comfort on full-length berths and there’s a clear six feet one inch of headroom throughout the house, plus complete galley and toilet facilities. The beam is ten feet one inch and with everything aboard, the boat draws about four and a half feet of water. Because of the inherent stability of the V-bottom hull, only 1,000 pounds of outside ballast, in the form of a lead or iron keel, is required. With a few hundred pounds of additional inside ballast placed right, the hull will come down to the designed waterline and trim evenly. Sinbad has a sail area of 376 sq. ft. in an easily-handled rig. The power installation is a Universal Model AFT, direct drive, 10 hp. engine, weighing 345 pounds. However, any similar engine of the same size and weight may be used.

16 pages, 5 plate(s)

Tern--A Knockabout Sloop (Pub. No. 5349)

An 18-ft. knockabout sloop with a simple, sharpie-type hull and low building cost.

For day sailing or short cruises on protected waters, this smart and able sloop is ideal for the man who’s building a boat on a limited budget. Because her hull lines are taken from those of the Chesapeake Bay Sharpie, she’s about the easiest and cheapest craft that can be built without sacrificing sound construction and good sailing qualities. Like the Sharpie, she’s flat bottomed and as easy to frame and plank as a skiff, and with the centerboard up only draws about 10 inches of water. The large cockpit will hold a good-sized party on day trips and for a couple of young fellows who don’t mind a few minor discomforts, the small cabin provides snug shelter for overnight or week-end cruises. The rig is of the knockabout type with 157 sq. ft. of sail that will drive the boat reasonably fast when she’s sailed slightly heeled, as all sharpies should be handled. While no engine has been shown on the plans, there’s no reason why a small aircooled inboard couldn’t be installed aft of the centerboard trunk and a shaft and propeller fitted at the end of the skeg.

10 pages, 2 plate(s)

Here's Falcon--A 14-Ft. Sailboat (Pub. No. 5358)

by W. D. Jackson, N.A.

If you want an unusually sturdy and fancy sailboat, try building this 14-footer. Costs are quite low too.

Falcon is a small, speedy, sporty sailboat which handles well. Our tests on the original Falcon showed that she could hold boats of comparable size.

10 pages, 3 plate(s)

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