Reviews

My Boat Plans by Martin Reid Review

My Boat Plans by Martin Reid Review

Articles

Commentary by Mike OBrien

Golden Gate Bridge Line Drawing Design

Typical Maine outboard lobster skiffs appear to be juvenile versions of the larger Maine inboard lobsterboats. They share strong sheerlines shapely topsides, with considerable flare in the forward sections firm bilges aft and relatively low beam-to-length ratios. Tradition calls for strip-planking or plank-on-bent-frame carvel construction. Of late, some skiffs have been splashed in fiberglass and a few have been cold-molded. Altogether, they are a handsome and efficient breed. A few years...

Principles of Yacht Design

Boat Trailer Design Specifications

G Empty weight of boat kg A Full load weight of boat kg g Ballast weight kg B Maximum beam m Loa Length overall m As Sail area m2 RM Dimensioning righting moment Nm RMjQ Righting moment at JO degrees heeling with empty weight of the boat Nm RM1 Righting moment at 1 degree heeling with empty weight of the boat Nm n Number of persons on board Fs Freeboard at mast m rm Additional moment from crew if As > RM (128-HA) the boat is considered to be a sailing boat, and the rig is to be dimensioned...

Hydrofoil Applications

Hydrofoil Catamaran

The tendency to view hydrofoils only as a means to lift the hull or hulls clear of the sea is conditioned by the fact that hydrofoils have been applied mainly to engine-powered craft which are subject to a less complex set of forces than sailing craft. In Fig. 6-1, to obtain a quantitative feeling for the problem, we have plotted the vertical lift-to-drag ratio weight-to-resistance of a typical multihull craft as a function of VJ L using Eq. 1-8 . Also shown is a curve labelled hydrofoils,...

Rms Queen Mary Blueprints

Queen Mary Profile Plans

20mm Oerlikon position 3in HA gun Extra lifeboats Carley floats Life floats dispersed about upper decks Type 273 radar office and aerial Degaussing coil 6in gun 40mm Bofors twin Mk1 Mk 51 director Rocket launcher Armour plating B1 LINE AND BODY PLAN B1 1 Lines (1 400 scale) B1 LINE AND BODY PLAN B1 1 Lines (1 400 scale) 1a. 10ft aft of 0 (after perpendicular) B2 FLAT KEEL PLATE AND CENTRE GIRDER (all drawings 1 200 scale except as noted) B2 3 Middle section side elevation

Smooth and Fair Hull

Hull Planing Wedges

This will be a short chapter for me, and a long-two weeks for you. You are going to plank the transom, bung the fastenings, smooth the hull, caulk, smooth some more, and mark the water -1 ine and you're going to do these things before you take the molds out, or you'll be sorry. I always reverse the procedure, and have all these things to do with shores and staging in the way. But I assume that you have a flawless character, and neither postpone the tedious nor reach greedily for the next...

Mizzen Topsail c Topgallant B ow ines

Fore Topsail Sheets

Through blocks, seized to the main topmast crosstrees Through blocks, seized to the main topmast crosstrees Through blocks on the opposite side shroud the port bowline rove through the block on the starboard main shroud and vice versa Main Yard with Stun-Sail Boom & Stunsail I oom Irons

A shippy little Lyle Hess design

Lyle Hess Sailboat Designs

Min. max. draft Bridge clearance Power B D ratio 23' 4 20' 10 2' 5 4' 11 33' 6 Years produced Sail area Fuel tankage Water tankage This is an unusual fiberglass boat, partly because her hull is lapstraked that is, simulated overlapping planks are molded right into the hull , and partly because she has one of the tallest rigs 33' 6 bridge clearance of all the 23-footers in this guide. The Pearson 23 Cat is an exception. The M23 was available either factory-finished or sold without the usual...

Design by C Raymond Hunt Associates Commentary by Joel White

Alejandro Sota Edificio Clesa

While a glance at the outboard profile gives the impression of a thoroughly up-to-date power craft, the design of Sting Ray V is more than 30 years old, for she was designed in 19621963 and built in 1964. It was in 1960 that Ray Hunt and Dick Bertram revolutionized the offshore powerboat racing scene with Moppie, beginning the era of the deep-V hull. Since that time, this hull form has been used for powercraft of all types sometimes in applications where other shapes might have served better....

Design by Philip C Bolger Commentary by Mike OBrien

Phil Bolger Shivaree Plans

Maine outboard-powered lobsterboats enjoy a reputation for efficient speed, good load-carrying ability, and handsome appearance. Philip C. Bolger began drawing an evolving family of these skiffs in the 1950s. His latest thoughts appear in the 21-foot 4-inch Sometime or Never. This launch represents a stretched version of the designer's 16-foot Shivaree. The 16-footer has plenty of beam 7 feet , so Bolger simply increased the distance between mold stations from 2 feet to 2 feet 8 inches. He...

Design by William Garden Commentary by Joel White

Ketch Sail Plan

Writing in Yachting magazine during the mid-1920s, Douglas P. Urry and F. Wavell Urry described three boats of their design called cogge ketches. These articles elicited a fair amount of interest among offshore cruising sailors, for the boats were handsome and oozed romance. All three boats 42 feet, 50 feet, and 65 feet LOA had round spoon bows, exaggerated sheerlines, raised poop decks, and doubly curved transoms with stern windows surmounted by large, cast-bronze stern lights of...

Heavy Weather Tactics

Leopard Catamarans And Heavy Weather

Scores of books have been written about heavy weather sailing, but few of them address the particulars of multihulls and their individual considerations. Monohulls have more commonalities as a group, therefore there are more general guidelines. Storm tactics for multihulls will depend more on the capabilities of crew and vessel than any other factors. Barreling along at 18 knots in strong winds can be thrilling and is a highlight of multihull sailing. Making no seamanship errors will be as...

Hms Bounty One Or Two Masts

As originally ordered by the Navy Board on 20 June 1787, while Bounty was fitting out, her boats were to be a 20-foot launch, and 18-foot cutter and a 16-foot cutter or jolly boat. These boats were apparently delivered to Deptford Yard but at Bligh's request the first two were exchanged for a 23-foot launch and a 20-foot cutter. Bligh, having had experience in the South Seas, realized the value of large boats for provisioning and watering. The Navy Board's We also know that the launch was a...

The Age of Exploration Carrack and Caravel

Carrack Ship Design

In the early fifteenth century the pace of ship development in the Atlantic tradition began to pick up this was the period with the most intense development of sailing ships. I hinted earlier about the potential for ship growth in size and development should the northern clinker and the Mediterranean carvel designs fuse. Such a mixing began with the Crusades. Many northern knights headed for the Holy Land in their double-ended clinker-built ships, taking them into Mediterranean ports en route....

The Planking Process From the Garboard Up

Batten Seam Planking

Now that the upper pari of the hull is planked, it's time to plank up the bottom, starting with the lowermost plank called the garboard. Put aside the diminish board, grab a batten, flex your knees, and get down where you can contemplate that section of boat below the tuck ribband. Now, you could close in this section with planks that run thus narrow enough so that they can easily be shaped to fit the hollow of the wineglass, and not too hard to fit see Figure 10-1 . It's perhaps worth noting...

Expanded version of the Menger

Menger Sailboat

1' 10 4' 6 33' 6 outboard 4 to 6 hp, optional inbd. 21 Bill and Andrew Menger Menger Enterprises and others 1990-present 270 sq. ft. Min. max. draft Bridge clearance Power B D ratio 1' 10 4' 6 33' 6 outboard 4 to 6 hp, optional inbd. 21 Years produced Sail area Fuel tankage Water tankage Bill and Andrew Menger Menger Enterprises and others 1990-present 270 sq. ft. After a lightning fire destroyed the molds for the successful Menger 17 catboat page 42 , Bill Menger and his son designed the...

Hydrostatics And Stability

Numerical Ship Hull Form Calculations

Iooking back at hull development in the history of- yachting, it is obvious that opinion about the optimum shape of a yacht has - changed many times. This is due in part to the changing rules, but more recently the changes in design trends reflect the increasing knowledge about the physical laws governing the behaviour of sailing yachts. The aim of this book is to present the state of the art in yacht design. While current knowledge does not provide explanations for all phenomena, there is one...

Authors Gallery of Photos

Peep Hen Sailboat

I have been writing and illustrating most of my life. At age nine, in 1943, I traded a pencil drawing I had done of a World War II B-17 bomber to a third grade classmate for a die-cast toy boat, my first commercial transaction. In 1946, at age twelve, I won first prize in a state-wide Scholastic Arts contest for a pen-and-ink drawing. I went to college, trained as a mechanical engineer, found a job, and at night got an MBA. My writing and drawing activities were almost exclusively...

Rigging Of Caravel Pinta

Flags P. The caravel Pinta Q. The caravel R. The comparative sail I have expressed my gratitude to some of the most important contributors to the creation of this book in the Foreword, but there are other friends and institutions also without whom the project could not have been completed. Amongst these, I would like to thank The management and staff of the Museu Maritim at Barcelona, for help in searching out material from the archives, particularly photographs the...

Design by Nat Benjamin Commentary by Joel White

Boat Diagram With Terms

Gannon amp Benjamin of Vineyard Haven, Massachusetts, is a boatyard of the old school dedicated to wooden vessels. Their business includes a bit of new construction, always some repair work, and the care and maintenance of a variety of wooden boats. Over the past few years there has emerged from their boatshop doors a small but steady rivulet of handsome new wooden sailing vessels, most of them designed by Nat Benjamin, one of the firm's partners. This 30-foot yawl is a fine example of the...

One Hundred Choices for the Best Small Cruiser

Cape Dory 25d

Ramp-Launching and Trailering Character Boats Seven boats appear in above lists twice. Seven boats appear in above lists twice. Listed on the opposite page are one hundred choices for the Best Small Cruiser. There are, of course, many more than one hundred choices for the best small cruising sailboat. In fact, there are 360 choices reported in this guide alone, and at least a few boats beyond those, on which we failed to find sufficient data to include here. In any case, as the saying goes, one...

The Backbone Keel and Sternpost

Ferme Toit Longueur Port

Your designer probably calls for a white oak .eel, properly air dried. This is good he could nave been much more specific, and gotten us -.11 in trouble. He might have inherited from iis Naval Construction days one of those little -lectric moisture-content indicators, and got-en all excited about what it told him. Although, confidentially, I've watched him read the shielded dial, nod with satisfaction, md mark OK on a timber that had been swaying to the summer breezes three weeks gt efore. He...

A little yacht that looks good and sails well

Little Cruiser Sailboats

23' 8 25' 5 20' 0 3' 10 35' 0 Min. max. draft Bridge clearance Power B D ratio 23' 8 25' 5 20' 0 3' 10 35' 0 Years produced Sail area Fuel tankage Water tankage Approx. trailering wgt. 10,400 lbs. The Eastward Ho was available either as a sloop shown here or, with a bowsprit added, as a cutter. There was also a choice of motive power, including a Volvo MD-2 diesel 22 hp or an Atomic Four 30 hp . The designer, Eldredge Mclnnis of Boston, MA, a firm started in 1926, tended to specialize in large...

West Coast entry in the catboat sweepstakes

Wooden Catboat Plans

17' 0 17' 0 16' 2 2' 2 4' 0 25' 0 outboard 3 to 6 hp, inbd. optional 33 Min. max. draft Bridge clearance Power B D ratio 17' 0 17' 0 16' 2 2' 2 4' 0 25' 0 outboard 3 to 6 hp, inbd. optional 33 Years produced Sail area Fuel tankage Water tankage The California-built Molly Cat is different from her eastern-built cousins in a number of respects, e.g., her stem has a jaunty tumblehome, and the use of wood is more lavish lignum vitae deck cleats, ash sheet blocks, extensive teak deck trim compared...

Storing and transporting a dinghy

Closed Transom Dinghy Drain

You can leave a dinghy on its dolly at the beach or in a boat park or marina and transport it by road on a trailer. For peace of mind and for everyone's safety, the boat should be tied down as securely as possible, with top and bottom covers for maximum protection. When leaving a dinghy unattended, you may need to remove sails, foils, and all loose fittings dinghy gear is expensive to replace and theft does unfortunately happen. Pull halyards tight before you leave the boat when it is windy,...

Ketch Schooner Yawl Cutter

Cutter Ship Blueprints

The modem Dutch boeier (below) has changed little from the designs which could be seen in the Netherlands in the 17th century.The gaff mainsail, from which the rig derives its name, is four-sided and set from a movable spar, or gaff, as it is known. The Marconi mainsail, from which the rig derives its name, superseded the gaff rig in the early years of the 20th century. It is a triangular sail set on a tall mast. The Marconi mainsail, from which the rig derives its name, superseded the gaff rig...

Table Particulars Of Ships Boats

1936 Queen Mary Deck Plans

Type motor lifeboat motor lifeboat motor lifeboat with wireless rigged as accident boat Beam 12ft Sin 12ft 5in 9ft 3in Depth 5ft 5ft 3ft 10V4in Speed 6 knots 6 knots 6 knots 2-cylinder diesel 2-cylinder diesel 2-cylinder diesel Weight 18 tons full load not known not known Life saving capacity 145 136 47 The third class smoking room was another semi-circular apartment with an all-round sea view forward, positioned on A deck. It contained five roomy recesses with built-in settees, augmented with...

Rigging a singlehanded dinghy

Laser Sailboat Block Block Technique

Popular single-handed dinghies such as the Laser, Topper, and Pico all have similar rigging, which is simple and quick to assemble. With practice, you should be able to get one of these boats rigged and ready to sail in about 15 minutes, though you may need help lifting the mast. The principal feature of all these dinghies is that they have no shrouds or forestay to support the mast. Instead, the mast is self-supporting, with the lower part fitting into a tubular mast step in the foredeck. The...

The Backbone Stem Rabbet and Frame Sockets

Forefoot Alignment

I'd like to read from my Ode to the Black Locust, but fortunately it's still all in the head, and hazy at that. The subject is the Stem. Out front every time first to take the brunt, whatever that is symbol of Man's conquest of the unknown stark in the cresting seas, the boiling sun, the creaking frosts of high latitudes. And not always up to facing these responsibilities, either, unless it's a pretty good piece to start with, and capped at the top to keep fresh water out of the end grain. So,...

Designs by Weston Farmer and Howard I Chapelle Commentary by Mike OBrien

Weston Farmer Boat Designs

Post-World War II America flaunted excess. Aggressively ugly automobiles serviced the ill-conceived tract houses that sprouted around nearly every city. As their contribution to this scene, boat designers or at least boat promoters contrived short, fat, and high plywood boxes that they marketed as outboard cruisers. These monstrosities ran at high speeds only on the advertising pages of boating periodicals. In real life they were slowed by any sea larger than a ripple and by totally...

How Are Catamaran Masts Fixed Down

Catamaran Stays Diagram

Most masts on production multihulls are fixed, non-articulating, aluminum extrusions and are therefore preferred for their reliability. above Yves Parlier's radical Hydraplaneur showing her advanced stepped hulls and biplane rig. Note how the masts are stepped on the crossbeams and not on deck this reduces compression loads and allows a lighter build. Shroud, forestay and leach tensions are counteracted by the compression of the mast on the central crossbeam, necessitating this critical zone to...

A cat with lots of room

Catboat Atlantic City Plans

21' 9 25' 9 20' 4 2' 3 5' 6 36' 6 Dan Wilkinson Wilkinson Marine 1977 -1983 324 sq. ft. 10 gal. 30 gal. Min. max. draft Bridge clearance Power B D ratio 21' 9 25' 9 20' 4 2' 3 5' 6 36' 6 Years produced Sail area Fuel tankage Water tankage Dan Wilkinson Wilkinson Marine 1977 -1983 324 sq. ft. 10 gal. 30 gal. Dan Wilkinson designed and built a dozen or so of these compact but roomy boats in the late 1970s and early 1980s in Sarasota, FL. Like her comps, the Coquina Cat is designed with some...

Did Hms Bounty Have Copper Hull

One of the most fascinating aspects of Bounty, in terms of shipbuilding practices of the day, is that she was a merchant vessel not only converted into a 'floating greenhouse', but also refitted to meet the standards of the Royal Navy. Her refit took over three months to complete and cost more than her original purchase price. Refit and provisioning costs include 2504 spent on the hullj and 1952 spent on rigging and stores with her purchase price of 1950 this gives a total of 6406. The first...

What Are The Catamarain Bulkhead Spacing

Antares Pdq Catamarans

Usually the very first comments boat show visitors make when stepping aboard a large cruising catamaran is related to the vast amount of room as compared to an equivalent length monohull. Close to ideal cockpit shelters, large amounts of storage, and 360-degree saloon views are just some of the space and layout advantages of multihulls. Thanks to the wide beam of a multihull its volume is much more than meets the eye. We all know that for every additional foot in length, the interior of a...

Rms Queen Mary Rigging Block

Queen Mary Hull Cross Section

B4 7 Cutaway perspective view with stern cants and interior bulkheads in place B5 MIDSHIPS HULL STRUCTURE B5 1 B5 2 Section where main deck is B5 2 strength deck (perspective view, no scale) B6 FRAMING IN WAY OF DOUBLE SKIN (no scale) C1 FORWARD AND AFTER MAIN ENGINE ROOMS (1 300 scale) Forward main engine room After main engine room Low pressure turbine High pressure turbine Condenser Low pressure feed heater High pressure feed heater Main circulating pumps Main circulating pump controller...

Maritiem Museum Prins Hendrik

The only part clinker built on the Catalan nao was below the forecastle. This feature was reproduced by Martinez-Hidalgo in his version of the Santa Maria, as shown in this detail of the model in the Museu Maritim, Barcelona. Xavier Pastor 15. Tackles supporting the mainmast the Matar model in the Prins Hendrik Maritiem Museum, Rotterdam. Xa vier Pastor 14. A parrel on the Matar ex-voto. Xavier Pastor 15. Tackles supporting the mainmast the Matar model in the Prins Hendrik Maritiem Museum,...

Hull Hydrodynamics and Design

Widest Split Type Aircon Dimension

Since the main objective of this project involves investigating the resistance of a hull and how it is affected by the introduction of hydrofoils, it is important to understand the components of this hydrodynamic resistance. Additional components will be added with the addition of the lifting foils and the interaction between the hulls and foils will also need to be accounted for. These will be discussed in chapter 3. The first and most obvious resistance comportent is the visco 3 resistance...

Catamaran launching and landing

Catamaran Trolley Slip

Two hulls mean that a special technique is needed to launch or retrieve a catamaran on its dolly. Once on the water, the catamaran provides the crew with an extremely stable platform as they prepare to leave the beach or come in from sailing. As with any dinghy, you should rig the sails of a catamaran as close to the water as possible. A catamaran dolly has two wheels on a central axle, with supports for the twin hulls. To put the dolly in place, one crew lifts a bow while the other pushes the...

Fore Topmast Staysail

Staysail Rigging

Lower tack lead-block a few feet above the deadeye -to pinrail or to a cleat secured to the shroud Single block strapped to the starboard side of the topmast head Through thimble seized to the forward shroud below the crossjack yard Single block strapped to the starboard side of the topmast head Through thimble seized to the forward shroud below the crossjack yard Main topmast preventer stay Flying jib halliard Fore topgallant sheet Fore topsail sheet Fore topsail bowline Fore course bowline...

Asymmetrical Racing Hulls Catamaran

Trimaran Central Beam

Represents a zero-order approximation for the wave resistance. This is not good enough for our purposes, however. An exact theory was given by Havelock in 1932. A simplified, but still quite general form of Havelock's equation has been found by Castles for hulls with lateral and longitudinal symmetry. A discussion of the physical basis of Havelock's theory and Castle's equations for single or multiple hulls is given in Appendix A. Castles' equation for a single hull is The quantity 5 is the...

Multihulls Catamarans

Plans Catamarans

Catamarans have a relatively long length along the waterline and no ballast at all, and consequently hold a straight line very well. The pressure on the rudder is relatively low as well, so they are easily steered. They accelerate far faster than monohulls in the puffs, however, which causes dramatic fluctuations in the apparent wind angle. The same is true in the lulls they slow down quickly and the wind swings aft. The principle is as follows when a gust hits a monohull, it causes increased...

A shortlived replacement for the Pearson Lark

Min. max. draft Bridge clearance Power B D ratio 23' 6 23' 6 18' 6 4' 0 31' 6 Years produced Sail area Fuel tankage Water tankage Bill Shaw Pearson Yachts 1968-1969 285 sq. ft. portable 15 gal. It is interesting to compare this boat with her near sister-ship, the Pearson Lark 24 page 305 . The Lark was phased out in 1968, the year that the Pearson 24 was introduced. The two boats were more similar than an initial glance might indicate. It looks to us as if the Pearson 24 design uses the same...

Evolution of a small cruiser stage two

Windrose Sailboat Laguna Yachts

Shad Turner Laguna Yachts 1980-1983 152 sq. ft. portable portable Min. max. draft Bridge clearance Power B D ratio 18' 0 19' 0 16' 0 2' 3 26' 6 Years produced Sail area Fuel tankage Water tankage W. Shad Turner Laguna Yachts 1980-1983 152 sq. ft. portable portable By 1980 the design trend was toward wider boats, for extra stability as well as cabin space. Laguna Yachts and Shad Turner responded by widening the six-year-old Windrose 18 previous page from seven...

Tortured Plywood Boat Plans

Plans Blueprints 1433 Rydal Road

Resulting narrow load waterline speaks of speed, and it suggests a possible lack of sufficient stability. I've not yet had the pleasure of rowing a Flashboat, but I have pulled various West Coast designs that display remarkably similar sections. If you'll allow me the luxury of extrapolation Stability should be no problem if you're accustomed to canoes, kayaks, or high-performance pulling boats. This boat will feel tender at first, much in the manner of a light dory, but she'll seem to stiffen...

Designs by Sam Devlin and Robert W Stephens Commentary by Mike OBrien

Devlin Boat Design

T Tere we have two easily built modified garveys, - each of strong character. Both are capable of JL JL performance that is equal, at least, to that of their stock fiberglass counterparts of fancier origin. For want of a more formal definition, garveys can be thought of as sometimes well-modeled scows that originated in the shallow bays and creeks along the Jersey Shore. Put together by different builders for different purposes, individual garveys display the considerable variety expected from...

Beveling Boat Transoms

Sawn Frames Boatbuilding

The Backbone Tail Feather and Transom, Molds, and Sheer Let's assume that this keel is on its side, with stem and sternpost in place, and with ballast keel bolted on. Chain a timber to the exposed side and stand it upright to rest on two wide 10-inch blocks one way aft, and the forward one at the toe of the ballast casting. The vessel is obviously down by the head. Secure it at the after block so that it cannot possibly slide backward or tip sideways. Now clamp a straightedge from the side of...

Design by Antonio Dias Commentary by Joel White

Joel White Boat Designs

Antonio Dias designed this little cutter, Annabelle Two, for a customer who lives in Indiana and who sails on the medium-sized lakes in that area. The boat will be used for daysailing and occasional weekend cruising. Concern for the pollution of these lakes led the owner to consider an unusual auxiliary propulsion system for the boat. This handsome little vessel shows an interesting contrast between the new and the old She's old-fashioned looking, with plumb stem, round-fronted cabin, and...

Design by SS Crocker Commentary by Joel White

have a theory, difficult to prove but intriguing to think about, that the best yacht designers are able to instill some of their character traits into their designs. Nat Herreshoff, genius designer, workaholic, a demon for speed, turned out a huge body of work, meticulously designed and crafted, fast and long-lived. His son, L. Francis, was inventive, eccentric, a lover of beauty and simplicity he produced a number of beautiful and simple yachts as well as some that were more inventive than...

Lapworth with a raised deck

Foot Lapworth

William Lapworth Continental Plastics 1958 -1966 263 sq. ft. portable 10 gal. Min. max. draft Bridge clearance Power B D ratio 24' 0 24' 0 20' 0 4' 0 33' 6 Years produced Sail area Fuel tankage Water tankage C. William Lapworth Continental Plastics 1958 -1966 263 sq. ft. portable 10 gal. Somewhere around 1958 yacht designer William Lapworth drew two boats for the Continental Plastics Corporation of Costa Mesa, CA the Lapworth 24 or L24 and the Gladiator 24. The...

A longlived and popular English design

Shoal Draft Small Micro Sailing Yacht

15' 0 15' 6 12' 0 0' 7 3' 0 17' 11 Stanley T. Smith International Marine 1977-present 91 sq. ft. portable portable Min. max. draft Bridge clearance Power B D ratio 15' 0 15' 6 12' 0 0' 7 3' 0 17' 11 Years produced Sail area Fuel tankage Water tankage Stanley T. Smith International Marine 1977-present 91 sq. ft. portable portable She's the lightest boat with the smallest rig of all the boats listed in this book. She was produced as a 14' hull from 1960 until about 1977, at which time the current...

Catamaran Design Guide

Catamaran Proportions

Spectacular sunsets in the Pacific turn the horizon into a brilliant spectrum of gold and orange colors. Copyright 2006, 2008 by Gregor Tarjan. Click here for terms of use. performance, yet desire high daily averages and passage times, which should be as short as possible. When choosing a large multihull, sailors look, above all else, for safety and comfort, long before the consideration for flat-out speed comes into the discussion. Nevertheless, performance is a highly important design...

Boat Wooden Grab Rail Plans

Bulwark, in a West-country merchant schooner (c. 1880) (Drawing courtesy of Basil Greenhill, The Woodshipbuilders) Bulwark stanchions may or may not be top timbers of the hull frame, depending upon their location for bulwark support. It is customary to fasten bulwark stanchions through planking, beam shelf, and ceiling, independently of the hull frames, to ensure their easy removal for repairs or replacement. Grips cut deep enough to pass a line through Screwed or bolted through housetop beams...

Designs by Karl Stambaugh and Philip C Bolger Commentary by Mike OBrien

Bolger Long Micro

Both Karl Stambaugh and Phil Bolger started with similar stacks of plywood and a drawer full of traditional ideas. Both came up with trailerable pocket cruisers that measure 19 feet 6 inches on deck. There the similarity ends. Stambaugh's Mist awakens memories of plywood sloops that filled the pages of Popular Whatever magazines in the years following World War II. But, in some ways, she's quite different. Many of the early-1950s hulls were designed aggressively for sheet construction. That is...

Traditional catboat with a difference

Catboat Designs

20' 0 21' 4 17' 9 1' 10 4' 3 29' 6 Peter J. Legnos Legnos Boatbldg. Co. 1974-1986 258 sq. ft. portable or 20 gal. portable Min. max. draft Bridge clearance Power B D ratio 20' 0 21' 4 17' 9 1' 10 4' 3 29' 6 Years produced Sail area Fuel tankage Water tankage Peter J. Legnos Legnos Boatbldg. Co. 1974-1986 258 sq. ft. portable or 20 gal. portable Unlike most of her comps, the Mystic Catboat 20 was designed to resemble a 19th century gentleman's cruising cat rather than a traditional working cat....

Replacement for the Cape Dory

Dory Plans Footer

25' 0 25' 0 19' 0 3' 6 35' 0 Carl Alberg Cape Dory Yachts 1981-1985 304 sq. ft. 13 gal. 20 gal. Min. max. draft Bridge clearance Power B D ratio 25' 0 25' 0 19' 0 3' 6 35' 0 Years produced Sail area Fuel tankage Water tankage Carl Alberg Cape Dory Yachts 1981-1985 304 sq. ft. 13 gal. 20 gal. Cape Dory Yachts decided to start from scratch on a new 25-footer after sales on their existing product, the CD 25, designed by George Stadel see page 329 began to taper off. They hired Carl Alberg to come...

Balboa alias Windrose alias Laguna

Laguna Windrose Sailing

1' 3 5' 6 swing, 2'11 shoal The Balboa 22 was built by Laguna Yachts, the same company that built the Windrose 22 page 213 , also designed by Shad Turner. If you look closely you will see that both hulls have identical dimensions, though the decks are somewhat different. Both hulls came in two choices of underbody a swing-keel version min and max drafts shown above and a fixed fin-keel version with a draft of 2' 11. Ballast for the swing version is 600 pounds, for the fixed version is 900...

Safety And Seakeeping

Vector Foil Proa

In this chapter we shall be primarily concerned with the problem of multihulPs extreme initial stability and the consequent high com-at sea. Other grave situations may occur, of course. Multihulls may be dismasted in situations where a monohull would not owing to the multihulls extreme initial stability and the consequent high com-pressional loading on the mast owing to gusts. Multihull rudders and boards are similarly more prone to breakage than monohull rudders as a result of the considerably...

Flatbottomed beachable cat ketch with poptop

Boat Design Software

25' 4 27' 6 23' 3 1' 3 5' 7 31' 1 Marine Innovators, Inc. 1979-1981 275 sq. ft. portable or 19 gal. 20 gal. Min. max. draft Bridge clearance Power B D ratio 25' 4 27' 6 23' 3 1' 3 5' 7 31' 1 Years produced Sail area Fuel tankage Water tankage Marine Innovators, Inc. 1979-1981 275 sq. ft. portable or 19 gal. 20 gal. Cat ketches are themselves a bit unusual, especially when they are only 25 feet on deck. Add to that wishbone rigs on both masts i.e., the rig typically used on windsurfing boards ,...

A truly unique design from Phil Bolger

Row Boat Plans Sail Outboard

Min. max. draft Bridge clearance Power B D ratio 21' 5 21' 5 19' 0 0' 4 2' 6 24' 0 Years produced Sail area Fuel tankage Water tankage Philip Bolger Edy amp Duff 1976-1983 143 sq. ft. portable portable Like her comps, Dovekie is basically a decked-over open boat. Bolger's design is unusual some would say radical with a dead-flat bottom no rocker, no deadrise , leeboards, a tiny bow centerboard for working to weather in shallows, and oar ports so she can be used without resorting to outboard...

Early and popular fiberglass sailboat

Building Fiberglass Sailboat Plans

22' 0 22' 0 20' 1 3' 2 30' 4 Min. max. draft Bridge clearance Power B D ratio 22' 0 22' 0 20' 1 3' 2 30' 4 Years produced Sail area Fuel tankage Water tankage Over 1,500 of these boats were made over a seven-year period. They were available either in the 3' 2 fixed-keel version shown here, or as a keel centerboarder draft board up 2' 6, down 4' 10 . At some point during Columbia Yacht Corporation's life between 1961 and 1978 , in addition to their regular finished boats, the company sold a line...

One of Nick Hakes early small yacht designs

Small Cruising Sailboats

21' 9 22' 2 20' 7 1' 11 3' 5 29' 0 Min. max. draft Bridge clearance Power B D ratio 21' 9 22' 2 20' 7 1' 11 3' 5 29' 0 Years produced Sail area Fuel tankage Water tankage The Seaward 22 was first launched in 1984, and in 1989 magically became the Seaward 23 see next page by including a bowsprit in its length designation. The 22 has round ports while the 23 has better-looking rectangular ports, and there are many other differences as well. But the 23 by any other name is still a 22-footer on...

French design with an unusual cabin plan

Dufour Yacht Cad Drawing

The Jeanneau Eolia 25 was available either as a fin keeler fixed draft 4' 9, shown here or as a keel-centerboarder draft 2' 7 board up, or 5' 11 board down . Although an outboard was an option, a high percentage of the boats sold have a raw-water-cooled Yanmar 1GM10 diesel of 7.5 hp. Either choice should power the Eolia 25 at hull speed. Best features We think the layout is quite clever, with a double berth aft under the cockpit, an enclosed stand-up head in the highest location in the cabin, a...

French import with lots of headroom

Jeanneau Tonic

Min. max. draft Bridge clearance Power B D ratio 22' 5 23' 8 20' 4 2' 3 4' 6 35' 0 Years produced Sail area Fuel tankage Water tankage Philippe Harle Jeanneau 1985-1995 243 sq. ft. portable 5 gal. This French boat came in two versions a keel-centerboarder, the statistics of which are shown above, and a fin-keeler, which draws 3' 7 and has a little less displacement 2,875 lbs., with 990 lbs. of iron ballast in the keel . At one point she was called the Tonic 24, based, we suppose, on the LOA of...

Canadian PHRF speedster from Ron Holland

Ron Holland Sailboat

Min. max. draft Bridge clearance Power B D ratio 25' 4 26' 3 22' 6 4' 6 39' 0 Years produced Sail area Fuel tankage Water tankage This fractional rig speedster with a PHRF handicap of 168 seems to be at least roughly in the same league as her comps, namely the Evelyn 25 much lighter, considerably higher B D ratio, and close to the same SA D ratio, but should she be 21 seconds per mile faster than the Bombardier the Capri 25 also lighter, but with a shorter waterline length, a shallower keel,...

General arrangement

Queen Miri General Arrangement

Air conditioning units Stewards' sen Ice room Telephone exchange battery room 40. Cabin bedroom sen ice pantry 42. Third class children's playroom H Rewinding room Scroll room Cinema operating box Third class cinema Third class lounge Mail handling space Mail chute Engineers' lift Skylight Tourist lift Vent to boiler room 6. Leading stewards' acommodation 13. Stores and baggage entrance 16. Tourist bedroom service pantry 25. Chief tourist steward's cabin Larder for salads and hors d'oeuvres 79....

Torque about Hull Stability

Kleiderb Gel Dreieckig Clipart

Torque applied about the longitudinal axis leads to heeling, and if the heeling angle is large enough, a boat may capsize. This is considered to be undesirable among all the boat owners I know, and so hull stability is taken to be a matter of some importance. Here, stability refers to the ability of a boat to right itself after having been heeled over by, say, a sudden gust of wind or a sudden change of course. We would like to know how much our boat can heel over before capsizing, and we would...

Carvel versus Clinker

Clinker Frame

The front-cover difference between clinker-built hulls and carvel-built hulls is illustrated in figure 1.5. The front cover does not represent the whole book, however, but like hull planks, or strakes, is what you see on the outside. Carvel-building probably came firstt and originated in the The reason for this behavior is discussed in chapter 5. tCarvel-built vessels were standard for the first millennium BCE in the Mediterra- eastern Mediterranean region. It was a natural extension of the...

Reuben Tranes ultimate macrominimicro

Hens Designed Reubin Trane

Min. max. draft Bridge clearance Power B D ratio 19' 2 21' 0 18' 3 0' 9 3' 0 25' 6 Years produced Sail area Fuel tankage Water tankage Reuben Trane Nimble Boats 1997-1999 165 sq. ft. portable portable A flyer issued in 1997 by the Florida Bay Boat Company on its then-new Maxi-Peep explains that the forward end of the boat is identical to the 14' Peep Hen see page 51 with a galley, two 6' 3 berths and room for stowage and a porta-potti under the cockpit sole. The center cockpit is 6' 6 long with...

Ted Hood designs a little cruiserracer

Amf 2100 Sail

21' 1 22' 6 17' 7 1' 0 4' 0 31' 0 Ted Hood AMF Alcort 1981-1983 209 sq. ft. portable portable 3,200 lbs. Min. max. draft Bridge clearance Power B D ratio 21' 1 22' 6 17' 7 1' 0 4' 0 31' 0 Years produced Sail area Fuel tankage Water tankage Approx. trailering wgt. Ted Hood AMF Alcort 1981-1983 209 sq. ft. portable portable 3,200 lbs. Ted Hood was good at designing fast cruisers and elegant racers, and it looks like he succeeded with the 2100. Still, the boat did not sell in any great numbers,...

Commentary by Maynard Bray

Gaff Rig Sail Plans

Yachts designed these days for speed under sail invariably come out as a somewhat cigar-shaped hull atop a fin keel, and have a pendant-type rudder back near the after end of the waterline. They're reminiscent of the fin-keelers of 100 years ago, except they're far bigger and have a marconi instead of a gaff rig. Unquestionably, boats of this type have proven to be fast, but they're usually so damned ugly that they hold no interest for me. If I had to choose between one of those and a pretty...

Singlehander is Worth Hollering About

Narrow Fiberglass Boat

One way to get people excited about a new performance dinghy is to say The hardest thing to get used to is the acceleration. That's what the builders of the Hoot, a 14-foot, single-sail dinghy with wings are saying about their new ride. The Hoot is the brainchild of a group of San Francisco Bay area sailors, one of whom is, Doug Kidder, who owns Kidder Racing, in Richmond, Calif., which builds rowing shells. The first prototype was one of Kidder's shells, cut down to 16 feet, with a windsurfer...

Folkboat design from England and Canada

Small Sailboat Design Software

25' 5.5 27' 1 21' 0 4' 0 33' 0 Years produced Sail area Fuel tankage Water tankage varies David Sadler J. J. Taylor amp Sons 1965-1990 304 sq. ft. Min. max. draft Bridge clearance Power B D ratio 25' 5.5 27' 1 21' 0 4' 0 33' 0 Years produced Sail area Fuel tankage Water tankage varies David Sadler J. J. Taylor amp Sons 1965-1990 304 sq. ft. The Scandinavian Folkboat concept heavy displacement, long keel with highly raked attached outboard rudder, narrow hull, low freeboard, springy sheer...

Lyle Hess trailerable motorsailor

Images Lyle Hess Boats

Min. max. draft Bridge clearance Power B D ratio 25' 1 25' 1 23' 4 2' 0 2' 0 32' 0 Years produced Sail area Fuel tankage Water tankage Lyle Hess Coastal Recreation 1974-1975 245 sq. ft. 20 gal. 25 gal. You can almost imagine the client talking to the designer, laying out his needs I want a fast, shallow draft, trailer-able motorsailer I can easily tow with my pickup to Mexico say La Paz to launch off the beach and cruise for a few weeks with my wife, occasionally inviting a couple of my grown...

Lyle Hess packet on a small scale

Small Cruising Sailboat Plans

Min. max. draft Bridge clearance Power B D ratio 22' o 30' 6 20' 10 3' 6 33' 6 Years produced Sail area Fuel tankage Water tankage Approx. trailering wgt. 10,800 lbs. The FC22 was originally built by Sam Morse in CA, but recently her molds and tooling were purchased by Cape George Marine Works of Port Townsend, WA. They, like Morse, offer the boat in various stages of completion from bare hull to finished vessel. Over the years, almost all FC22s have been built to order. The hull is fiberglass,...

Noteworthy Multihulls

N the following chapter I have attempted to objectively present and illustrate some of the popular cruising catamarans which are available today. Purposely omitting custom boat builders, the multihulls in this section represent about 90 of today's production cats. My company, Aeroyacht Ltd., an international dealership specializing in multihulls ranging from 35'-200', has seen several new builders come and go over the past few decades the following yards seem to have passed the test of time....

Time to Rock and Roll

Designing boat hull shapes for stability involves a number of trade-offs. Not least is the comfort of the crew and passengers. Not only must our Figure 5.8. The radius of gyration (dashed circles) about the center of gravity, CG (small circles), of a boat hull for different hull shapes. If the hull is a hollow cylinder (a), the radius of gyration is just the cylinder radius. For a solid cylinder (b) the radius of gyration is only 71 of the cylinder radius. For different boat hull cross sections...

Popular design from Carl Alberg

Bristol Corinthian

19' 6 19' 6 14' 6 2' 9 26' 6 Min. max. draft Bridge clearance Power B D ratio 19' 6 19' 6 14' 6 2' 9 26' 6 Years produced Sail area Fuel tankage Water tankage Over 700 of these shippy-looking little sloops were built between 1965 and the early 1980s. Alberg's designs are so distinctive that his trademark look is hard to miss. For example, compare this boat with a near lookalike, the Cape Dory Typhoon 18 19 on page 23. The resemblance is striking, at least until one realizes that the smaller...

Typhoon with extra oomph

22' 5 22' 5 16' 6 3' 1 34' 0 Carl Alberg Cape Dory Yachts 1981-1988 245 sq. ft. portable portable Min. max. draft Bridge clearance Power B D ratio 22' 5 22' 5 16' 6 3' 1 34' 0 Years produced Sail area Fuel tankage Water tankage Carl Alberg Cape Dory Yachts 1981-1988 245 sq. ft. portable portable The smaller Cape Dory Typhoon 18 (page 23) was introduced in about 1971, when the company was offering only two boats, but it wasn't until 1981 that the 22-foot Typhoon Senior came along. The 22 sold...

A cat ketch daysailer with a canvas cabin

Dovekie Sailboat

This little decked-over double-ended cat ketch is said to have its design origins in L. Francis Herreshoff's Carpenter, designed in 1929 see sailplan inset though we see only a minor resemblance. The Sea Pearl comes with a tonneau cover for the forward cockpit, which is non-self-bailing, but also can be rigged with an optional canvas cabin. A small steering cockpit aft of the mizzen is self-bailing. The base boat has a centerboard, but optional leeboards are available, as are twin lug rigs and...

The Planking Process From the Sheer Down

Wooden Sailing Boat Hull Planking

So there she is, set up, timbered out, rabbet faired, ready for planking. This is the biggest single job, and probably the most difficult for the beginner not because there's anything very complicated about it, but because much of it depends on j udgment, eye, and the unconscious skill of hand that you gradually acquire without knowing it. The old pro loves to fit planks because he can do it without thinking, and it's his great talent, with a sort of timeless rhythm to it, which clothes and...

Design by Dave Gerr Commentary by Joel White

Schnellboot Hull Pdf

The design for Summer Kyle first came to my notice in the form of a press release from Gerr Marine. While I tend to digest press releases with a considerable sprinkling of salt, anything from the board of Dave Gerr interests me, and Summer Kyle proved to be no exception. Designs from his office are usually no-nonsense, good-looking boats, with a considerable leaning toward traditional styling. A glance at the outboard profile of this design would seem to confirm this assessment. Yet there is...

Designs by William Garden and Murray Peterson Commentary by Joel White

Murray Petersos Desings

Tust as a painting is influenced by the artist's envi-I ronment and early training, so is the naval archi-I tect's design affected by the area in which he lives 'and the local traditions of boatbuilding. It would be difficult to imagine a South Seas proa being developed in our cold northern waters while all sailors like to go fast, most dislike being sprayed by cold water while doing it. The two designs shown here are good examples of these influences. Both are drawn by masters of their trade,...

The Last Days of Sail

Nineteenth Century British Boat

With hindsight we can see that, even without rough seas, unfavorable economics, and civil wars, steam engines alone would have killed off the clippers. James Watt made his major breakthrough in steam engine design the same year that HMS Victory was built the age of steam locomotives coincided with the clipper revolution, and it was only a matter of time before steam engines replaced sails to drive ships. At the beginning of the nineteenth century, ships were made of wood and powered by wind by...

East Indiamen and Others

Tall Ship Shrouds Seizing Labelled

In the seventeenth and eighteenth centuries several western European maritime trading nations established colonies or trading monopolies with peoples in South and East Asia. Luxury trade goods such as spices, silks, works of art, and, increasingly, tea were brought from India, China, Japan, and Indonesia to be sold in the markets of Europe. The Dutch, French, and British granted trading monopolies to their own East Indies companies, who operated very profitably though inefficiently as a...

The Crabber plus two feet

Roger Dongray Designs

19' 3 25' 0 17' 6 1' 6 4' 0 26' 3 Roger Dongray Britannia Boats Ltd. 1978-present 194 sq. ft. portable portable Min. max. draft Bridge clearance Power B D ratio 19' 3 25' 0 17' 6 1' 6 4' 0 26' 3 Years produced Sail area Fuel tankage Water tankage Roger Dongray Britannia Boats Ltd. 1978-present 194 sq. ft. portable portable This is a character boat with concomitant grace, and with a good measure of performance and practicality, too. What she lacks in headroom, she makes up in charm. In England,...

First production glass catboat is still popular

Catboat Designs

18' 2 20' 7 17' 8 1' 7 4' 4 32' 0 Breck Marshall Marshall Marine 1963-present 253 sq. ft. Min. max. draft Bridge clearance Power B D ratio 18' 2 20' 7 17' 8 1' 7 4' 4 32' 0 Years produced Sail area Fuel tankage Water tankage Breck Marshall Marshall Marine 1963-present 253 sq. ft. This salty-looking vessel is one of the longest running fiberglass designs around. It is still selling well after almost 50 years on the market. Best features The basic design is virtually unchanged from the earliest...

Reuben Tranes ultimate micro

Nimble Boats

Min. max. draft Bridge clearance Power B D ratio 14' 2 16' 2 13' 3 0' 9 3' 0 24' 0 Years produced Sail area Fuel tankage Water tankage Designer Trane says he conceived this boat after a good New Year's Eve party as a small, beachable, easy-to-use microcruiser. The Peep has the smallest LOD in this book, though she's far from smallest in usable space. In fact, her big freeboard and beam give her second-best space versus the comps shown here. Best features Very shallow draft with centerboard up...

Early forerunner of the Seaward

Seaward Fox

16' 6 17' 4 14' 10 1' 7 2' 7 25' 0 Min. max. draft Bridge clearance Power B D ratio 16' 6 17' 4 14' 10 1' 7 2' 7 25' 0 Years produced Sail area Fuel tankage Water tankage Nick Hake started Starboard Yacht Company in 1979 with the cute little Slipper 17. Over the years the dimensions varied a bit, and so did the rig cat or sloop , the deck configuration deckhouse or flush deck and the name of the builder Starboard, Seaward, Hake Yachts but with Nick Hake always in control. See the Seaward Fox II...

Early pocket cruiser from Jouet Co in France

Golif Jouet

21' 0 22' 6 19' 5 3' 2 30' 6 Jouet amp Co. Jouet amp Co. 1963-1970 229 sq. ft. portable portable Min. max. draft Bridge clearance Power B D ratio 21' 0 22' 6 19' 5 3' 2 30' 6 Years produced Sail area Fuel tankage Water tankage Jouet amp Co. Jouet amp Co. 1963-1970 229 sq. ft. portable portable This interesting French design, imported to the United States by Ersco Boats from Sartouville, France, appeared early in the era of molded fiberglass. Among the many unusual ideas incorporated in the...

Rebuild of a Herreshoff America

18' 2 20' 0 17' 9 2' 2 4' 11 28' 0 Hutchins Design Team Hutchins Company 2002-present 205 sq. ft. portable 10 gal. Min. max. draft Bridge clearance Power B D ratio 18' 2 20' 0 17' 9 2' 2 4' 11 28' 0 Years produced Sail area Fuel tankage Water tankage Hutchins Design Team Hutchins Company 2002-present 205 sq. ft. portable 10 gal. The Com-Pac Horizon 18 is a reconstruction of the Herreshoff America (page 35), pursued after builder Hutchins bought the tooling from the last of many molders of the...

Modernized classic catboat by Garry Hoyt

Catboat Plans

19' 2 23' 2 17' 6 1' 2 3' 0 32' 0 Garry Hoyt TPI Corp. 1998-2002 272 sq. ft. portable portable Min. max. draft Bridge clearance Power B D ratio 19' 2 23' 2 17' 6 1' 2 3' 0 32' 0 Years produced Sail area Fuel tankage Water tankage Garry Hoyt TPI Corp. 1998-2002 272 sq. ft. portable portable Designer Hoyt decided to try to minimize some chronic catboat weaknesses, including sluggish windward performance, bothersome weather helm, difficulties in reefing, and excessive sailing and trailering...

A classic micro yacht

Micro Boat Design

18' 9 19' 9 16' 9 0' 6 3' 7 27' 0 Herb Stewart International Marine 1976-present 135 sq. ft. portable 2 gal. Min. max. draft Bridge clearance Power B D ratio 18' 9 19' 9 16' 9 0' 6 3' 7 27' 0 Years produced Sail area Fuel tankage Water tankage Herb Stewart International Marine 1976-present 135 sq. ft. portable 2 gal. The history of this boat, like her little sister the WWP 15, goes way back. An earlier version, the HMS 18, was introduced in 1970. That version had slightly different dimensions...

Unusual catrigged microcruiser

Helton Solo Sailboat

16' 2 16' 11 14' 4 1' 9 26' 0 Min. max. draft Bridge clearance Power B D ratio 16' 2 16' 11 14' 4 1' 9 26' 0 Years produced Sail area Fuel tankage Water tankage This is a good-looking small catboat with a shoal-draft winged keel. Below there is just enough space for a tiny galley, portable head, portable 40-quart cooler, and a table which converts to part of a double berth. In 1992 the boat had a bendy, stayless kevlar-and-fiberglass mast as shown here , with vertical battens so the sail could...

Has this boat disappeared without a trace

Pierce Arrow Pa18 Sailboat

17' 6 18' 7 16' 8 0' 9 4' 0 30' 10 Mark Leonard Pierce Arrow Marine 1982-1984 185 sq. ft. portable portable Min. max. draft Bridge clearance Power B D ratio 17' 6 18' 7 16' 8 0' 9 4' 0 30' 10 Years produced Sail area Fuel tankage Water tankage Mark Leonard Pierce Arrow Marine 1982-1984 185 sq. ft. portable portable The PA18 is unusual in several ways. For one thing, she weighs only 1,100 pounds, ready to sail. Also, with her wide beam, she has a bigger Space Index than any of her comps. For...

The author owned and loved one of these cats

Catboat Lines Plan

17' 0 19' 4 16' 5 1' 11 6' 3 30' 3 4 to 6 hp outboard optional inbd. 23 Min. max. draft Bridge clearance Power B D ratio 17' 0 19' 4 16' 5 1' 11 6' 3 30' 3 4 to 6 hp outboard optional inbd. 23 Years produced Sail area Fuel tankage Water tankage First built as the Hermann Cat by Ted Hermann's Boat Shop, this design was eventually taken over by Cape Cod Shipbuilding and became the Cape Cod Cat. The CCC is traditional and salty looking, with ample ability to cruise two for a week or more. The...

An unusual cat ketch with wishbone booms

Poacher Ketch

21' 1 22' 4 17' 9 1' 0 4' 6 27' 7 Min. max. draft Bridge clearance Power B D ratio 21' 1 22' 4 17' 9 1' 0 4' 6 27' 7 Years produced Sail area Fuel tankage Water tankage Parker Dawson Yachts of Hingham, MA, produced this out-of-the-ordinary craft, of which 50 or so were built from 1979 into the early 1980s. The split rig is unusual in a boat this small, since the configuration often means less total sail area. But in this case, the Poacher's total area is higher than any of her comps. The...

Early British entry in the glass sweepstakes

Hurley 1962

18' 6 20' 9 18' 4 2' 4 25' 0 Min. max. draft Bridge clearance Power B D ratio 18' 6 20' 9 18' 4 2' 4 25' 0 Years produced Sail area Fuel tankage Water tankage Approx. trailering wgt. Built by Hurley Marine and later by Russell Marine in Essex, England, and imported by Wells Yachts starting in the early 1960s, the Vivacity 20 was a popular early fiberglass micro-cruiser. Like her predecessor, the Alacrity 19 (page 19), she features twin bilge keels and a low profile doghouse. About 600 Alacritys...

A product of a company that has left no trace

Sovereign Sailboat

17' 0 18' 0 14' 6 1' 10 24' 6 Min. max. draft Bridge clearance Power B D ratio 17' 0 18' 0 14' 6 1' 10 24' 6 Years produced Sail area Fuel tankage Water tankage I still remember meeting Sovereign's sales rep at a boat show in the 1980s, and getting a complete brush-off for asking questions like Who designed her I'm still puzzled by that salesman's unhelpful responses, but even today, the company's secrets, if any, are safe the firm seems to have disappeared without a trace. This model started...

Catamaran Sailboat Wide Bodied Hulls

Hull Resistance Curves

The cross-sectional profile of a hull will determine the wetted surface and drag. Its distribution throughout the length of the boat will affect payload carrying ability and buoyancy. From the schematics at the top of page 117, one can easily see how the wetted surface of each type of hull section differs, yet retains the same cross-sectional area. At one extreme, the deep V-type hull partitions, as employed by the Wharram catamarans, have 25 more wetted area than the contemporary type oval and...

Trinidad For Boat Building

Trinidadians have been building boats for years, especially power boats and fishing boats both for export and their own use. Bowen Marine, Formula III and Peake all have a good reputation in the power boat market, including fine cruising boats and some very fancy racing craft that, in the wrong hands, would raise the eyebrows of any customs officer from here to Miami. The sailing yacht market is newer. Soca Sailboats have a factory on the Eastern Main Road in Trinidad where they build Henderson...

South Pacific Tradition

Ancient Catamaran Boats

Catamarans have been around for at least three millennia. The traditional cats consisted of a double hull of logs connected by a rigid deck or platform. Westerners first learned of cats from an English adventurer in India, who wrote about them in the 1690s. The word catamaran is Tamil, and these vessels have long been associated with the state of Tamil Nadu in southern India cats have been recorded there since the fifth century CE. The cats that we know today more closely resemble those...