wharram Archives - Small Boats Magazine

Hitia 17

James Wharram’s Polynesian catamaran designs have inspired countless backyard boatbuilders with dreams of ocean voyaging to exotic tropical destinations. Starting with the simple 23’ TANGAROA, aboard which he completed the first catamaran crossing of the Atlantic in 1955–56, the cruising-sized vessels in his range of plans have an impressive safety record due to their conservative design parameters. Seaworthiness is the number-one priority in his designs.

While ocean-voyaging catamarans have been the main focus of Wharram’s design work, his plans catalog includes a few smaller boats suitable beach cruising. The Tiki 21 that was recently profiled here in Small Boats Monthly crosses the line between the two pursuits but is still a bigger boat than many people want to build or trailer. The Hitia 17 and the Hitia 14 are based on the same hull shape and design concepts as the Tiki 21 and her larger sisters, but the Hitias are open boats. They are lighter, simpler, and less expensive to build, while retaining the sailing characteristics and performance of the cruisers. While the smaller Hitia 14 is strictly a daysailer, the Hitia 17, with its dry-storage holds and kayak-style cockpits, features real camp-cruising capability for sailors who don’t mind roughing it a bit.

Omar Rashash

Taken apart for transport, the pieces of the Hitia 17 are light enough to be carried to the beach.

In 1997, I chose the Hitia 17 as my first sailboat build. After many years of sea kayaking and building various kayaks and canoes, I wanted to sail to the same kinds of places I could paddle craft, but I wanted to carry more stuff, and make occasional open-water crossings at faster speeds. The Hitia 17 fit the bill, and the double-canoe design appealed to my prior experiences with seaworthy small boats. It draws only 12″, is easily beachable, and could accommodate a companion or two. It offers the possibility of camping aboard if necessary—a real plus in places like Florida’s mangrove swamps where there are no campsites.

Like all Wharram catamarans, the Hitia 17 is designed for plywood construction, and the assembly method is straightforward stitch-and-glue with epoxy-fillets, taped joints, and fiberglass sheathing. The project calls for eight sheets of 1/4″ plywood and one sheet of 5/8″, as well as some straight-grained fir or spruce lumber for stringers, crossbeam parts, and mast laminates.

Omar Rashash

The two hulls and three crossbeams are assembled with lashings instead of hardware. With experience, the assembly time can be cut down to under an hour.

Building the Hitia 17 doesn’t require an large shop, because each hull is only 2′ wide and weighs about 90 lbs. They can be built one at a time under a minimal shelter, on one side of a garage, or, as some builders have done, even inside an apartment or house, as the hulls are slim enough to fit through standard doors, and everything can be moved outdoors and assembled in the back yard. The design book states that the build will take about 250 hours, but most builders take a bit longer if they’re shy on experience and tools or if they simply want better-than-average craftsmanship and finish. I built my Hitia 17 over the course of about seven months of spare-time work, and the result was everything I’d hoped for.

As with the larger Wharram cats, the components and rig of the Hitia 17 are designed to eliminate the need to purchase a lot of expensive marine hardware. The hulls are connected to the three crossbeams with low-stretch rope lashings, and the rudders are laced to the sterns with rope hinges that are both elegant and effective. The tillers lock onto the rudderposts with no metal hardware, and the mast is secured into its step with a wooden key built onto middle crossbeam Even chainplates and mast tangs are unnecessary, as the shrouds and stays are tensioned with lanyards anchored to flat wooden cleats at the sheer at one end and looped over hounds at the masthead on the other.

Barbara Davis

This Hitia 17 carries Wharram’s gaff wingsail main, with a luff sleeve for better airflow around the mast.

When I built my Hitia 17, the sail plan differed from that of the Tiki designs in that it had a sprit rather than the short gaff rig of the standard Wharram wingsail. The sprit has the advantage of simplicity—one less halyard to bother with—and the sail can be brailed around the mast with the sprit in place, but in strong winds, the sprit has to be taken down. It tends to get in the way because it is as long as the boat. Now the Hitia 17 plans include the option for the gaff wingsail, and having sailed the larger Tikis with that rig, I would recommend it as it is easier to reef and offers more adjustment to the shape of the main.

There is no mention of an auxiliary outboard in the building plans, and it’s certainly not necessary, as the boat can be paddled, but I added a motor mount on the aft beam and fitted a 3-hp Evinrude that often came in handy during extended periods of calm on the Gulf of Mexico. The cost of building my own Hitia 17, including the sails, outboard, and a new trailer I modified for it, came in at just under $6,000, which seemed very reasonable for such a capable catamaran.

Unlike the larger Tiki 21 and Tiki 26, the Hitia 17 doesn’t require an elaborate folding trailer, but unlike many beach cats of similar length, it is too beamy at 10’11” to transport fully assembled. Wharram was uncompromising in keeping to the overall beam-to-length ratio of his proven ocean voyagers, and wouldn’t reduce the beam to 8’6”, the maximum width allowed for trailering. But since the hulls are light enough for two people to easily carry or one person to maneuver around with a two-wheeled cart, almost any trailer can carry separated hulls to the water. They could even be cartopped, although with the beams and mast to carry as well, it would require a large and quite substantial rack capable of handling a 300-lb load.

I went to a little more trouble than necessary when fitting out my trailer, because I wanted to be able to assemble and launch the boat fully loaded boat by myself in one go. To accomplish this, I made two removable beams fitted with cradles to hold the hulls at sailing width. Upon arrival at the boat ramp, I secure these in place and then lift the hulls, one end at a time, into the cradles and then lash on the crossbeams and step the mast. With practice, I got my launching time down to just over half an hour.

Barbara Davis

The mast rests on a crossbeam and is supported by a single shroud to each side.

The Hitia 17 is a forgiving catamaran to sail compared to most beach cats of similar length. With its generous beam and just 160 sq ft of sail area, it is a stable platform that can handle a wide variety of conditions. That’s not to say that it won’t capsize with carelessness, but it is far less likely to than the typical, more racing-oriented catamarans in that size range. Even with its conservative sail plan and relatively low rig, the Hitia 17 is still quite capable of exciting performance in the right conditions. I often clock over 10 knots, even with the hulls weighed down with camping gear. Tacking and jibing are reliable and effortless, and windward ability is certainly acceptable for a multihull designed for cruising rather than racing.

The absence of daggerboards, centerboards, or leeboards somewhat limits the Hitia’s pointing ability, but is a great asset for exploring thin water that most sailboats can’t reach. Drawing only 12”, the deep-V hulls can be sailed right up onto the beach, then easily pushed back off again. On sandy beaches I could even sail in through a moderate surf break and land, just as I did in my kayaks. The rudders and the integral skegs are no deeper than the keels, making it safe to let the boat dry out at low tide. Owners who plan to beach the boat on a regular basis can easily add Kevlar strips or other reinforcements along the keels.

Scott Williams

The area between the aft and middle crossbeam is large enough to accommodate a backpacking tent for overnights at anchor. On a trip to St. Vincent Island in Appalachicola Bay, the author camped on the deck and use the front trampoline for a porch, a galley, and storage.

I did several multi-day camp-cruising trips with the Hitia 17 to various barrier islands off the coasts of Florida and Mississippi. The little catamaran performed well whether I was sailing solo or with a companion. I frequently anchored out and pitched a small backpacking tent on the trampoline between the hulls, an arrangement that worked well in calm conditions. There is, however, little room to move about with the tent taking up most of the deck space, so I sometimes found it easier to camp ashore, especially when I had a companion with me.

The flaring deep-V hulls give all Wharram catamarans excellent load-carrying capability for their size, and the Hitia 17 is no exception. Each hull has watertight bulkheads that segment the hull into four dry-storage compartments. Forward of the mast crossbeam, each hull has a large hold accessed through waterproof deck hatches. The plans suggest to either make wooden hatches and coamings or to purchase rubber kayak hatches. I bought a pair of large oval VCP kayak hatches for my own boat, as the foredecks can take a lot of water and spray in rough conditions. In the ’midships section between the beams, each hull has a compartment, accessible through two large hatches, to sit in kayak-style, or to use as foot wells when seated on deck. Spaces beneath these compartments offer extra dry storage for smaller items that will fit through 6” deck plates. Even when loaded with equipment and supplies for a crew of two for several days, there is room to stow lightweight, compact gear securely belowdecks.

All of these features with the ease and low cost of building your own make the Wharram Hitia 17 an attractive package for adventurous sailors wanting to do some extended coastal exploring on a safe and comfortable multihull platform.

Scott B. Williams began his small-boat adventures exploring the creeks and barrier islands by canoe and kayak in his home state of Mississippi. His fascination with the potential of these simple boats led him to longer solo journeys in the Caribbean and down the Mississippi River, which he first wrote about in the pages of Sea Kayaker magazine in the early 1990s. Combining a passion for woodworking with his interest in boats led him into wooden boatbuilding and yacht carpentry while he continued writing about his adventures. He has since written 22 books (and counting), many of them survival and adventure novels which draw on his paddling, boatbuilding, and sailing experiences. Scott can be contacted through his website.

Hitia 17 Particulars

[table]

Length/17′

Beam overall/10′11″

Draft/1′

Weight total/295 lbs

Weight of single hull/90 lbs

Capacity/550 lbs

Rig/sprit or gaff wing-sail sloop

Sail area/160 sq ft

[/table]

Plans for the Hitia 17 are available from James Wharram Designs for £306 (about $407USD).

Is there a boat you’d like to know more about? Have you built one that you think other Small Boats Monthly readers would enjoy? Please email us!

Tiki 21

James Wharram is a multihull pioneer who has been sailing and designing exceptionally seaworthy catamarans since the 1950s. For his first voyage, he built, TANGAROA, a 23’ catamaran and sailed her from the U.K. to the Caribbean with Jutta Schulze-Rhonhof and Ruth Merseburger, both from Germany. While in the Caribbean he became a father, and the boat mothered a growing colony of teredo worms. With a strong desire to sail home, Wharram built a 40-footer and did the first North Atlantic crossing by catamaran. His designs are based on firsthand experience, regularly updated and improved, and have a safety record that is hard to beat.

I built his Tiki 21, which is designed as an easily built, trailerable coastal cruiser for adventurous folks who don’t mind bearing a small amount of discomfort to be rewarded with a boat which is in harmony with the sea. The plans are highly detailed and provide illustrations for almost every step of the process. The plans include a materials list, down to the last fitting, and an epoxy technique manual depicting everything from laminating to fairing. The plans call for 18 sheets of 1/4″ marine plywood and one sheet of 3/4″. My Tiki 21, BETO, took around 10 or 12 gallons of epoxy and a good helping of mahogany and Douglas-fir.

Dale Duke

While the Tiki’s main is designed to be sailed with a loose foot, the author finds an easily mounted, aluminum sprit boom provides improved performance in light air.

The hulls are built using the stitch-and-glue method, making it a fairly quick build, even for the first-time builder, though practicing with some scraps of plywood and epoxy is recommended for beginners.

Construction starts with forming the hull panels and stitching them together, then moves on to installing bulkheads and bunks and fitting the decks and cabintops. After the hulls are complete, just three beams, two tillers and rudders, and a wooden mast remain as the last major projects. For BETO, I chose an aluminum mast—a 22′ length of 4″ aluminum tubing with a 1/8″ wall thickness, as recommended in the plans. I chose aluminum over wood in hopes of a lighter mast that would require less maintenance and be easier to raise when rigging.

The Tiki 21’s most controversial feature is, perhaps, the use of lashings, rather than conventional marine hardware, to hold the amas and akas (hulls and cross beams) together. Wharram believes that the lashings allow for shock absorption and decrease shock loads at the joints. Each wrap of the five loops has a 2,800-lb breaking strength. The lashings are frapped so tightly that small movements between structural members are unnoticeable. The lashing system is proven by both Wharram cats and the well-traveled Polynesian voyaging canoes of the Pacific.

Scott Williams

The Tiki 21 plans include a motor mount set within the perimeter of the deck. The pod added to this boat frees up deck space and includes a place for the gas tank. The cross beams, or akas, are stitch-and-glue I-beams.

The Tiki 21 was designed to be assembled on a beach at low tide and to float away when the sea returns. It has a 14″ draft, and each hull weighs in right under 200 lbs when completed. For our negligible tidal range and for freshwater sailing, I chose to build a trailer with telescoping sides that allow the hulls to be expanded outward for boat assembly before being backed down the ramp. We currently sail BETO on a small lake, so it rests on the trailer between outings.

When we want a taste of salt water, we unlash the beams and slide the hulls together for a package that is a little wider than my small Toyota truck. I can assemble the boat by myself in two hours and disassemble it in an hour. This is pretty fast to be on the water, and a helper could easily bring this time down as the lashings and frappings are the most time-consuming tasks. Some Tiki sailors have had good luck with ratchet straps and nylon webbing when trailering to daysail. I wouldn’t recommend ratchets in lieu of lashings for venturing offshore, however.

Scott Williams

The Tiki 21 was designed with cruising accommodations for two, but there is room for more on deck. The catamaran has a carrying capacity of a half ton.

So how does the Tiki 21 sail? I’m a former racing catamaran sailor whose friends all sail go-fast boats, and I think it sails like a dream! The rig is a Wharram “Wing” sail that keeps the center of gravity low and the power high. The sail is modeled after a high-aspect Dutch gaff rig, using a short gaff at the peak and an elongated luff pocket that envelops the mast and minimizes turbulent airflow. This unique arrangement offers performance similar to modern rotating masts and square-top mainsails without all of the moving parts.

Scott Williams

The mainsail is sewn with a luff sleeve for a smother flow of air around the mast. The jib and main halyards run along the mast inside the sleeve. This Tiki 21 was built by Rick Hueschen of North Carolina.

Unlike older Wharram designs, the Tiki 21 has a power-to-weight ratio that can get one in trouble if the wind pipes up. In light air, however, it is slightly undercanvased, and a drifter works wonders. The deep-V hulls have hardly any noticeable leeway if sails are trimmed correctly, and can tack in light and heavy air even sailing just the main.

The rudders are lashed to the sternposts and skegs and do not extend below beneath them, so the Tiki can’t turn on a dime in tight quarters. However, when sailing, it tracks like it is on rails. I sail upwind all the time in up to 20 knots with just a bungee crossed over the tiller. The Tiki is superbly well balanced and will sail along happily with proper trim. To windward we have seen 7 knots with the wind at 50 degrees true, falling down to around 5 knots at 40 degrees true. Off the wind, BETO has clocked 15 knots while power-reaching with no noticeable lifting of the windward hull (check my video). For normal cruising, we reef the main and jib in 15 knots to keep dry on deck and fully in control while still making 8 to 10 knots on a reach. For sails, we carry a main with three reefs, a jib with one reef, a nylon drifter, an asymmetric spinnaker, and a storm jib. I have an outboard, but I learned to sail on a 22’ engineless racing sloop, so I have plenty of patience when the wind dies, preferring not to deal with a nasty outboard and volatile gasoline. Using a stand-up paddle, I can move the Tiki all day at 3 knots in flat water, and with a second paddler it’s even faster.

Dale Duke

While each hull provides room for a narrow berth, the deck provides more spacious accommodations when equipped with a canopy or a free-standing tent.

For coastal cruising on a small catamaran, one can really not find a better-suited vessel than the Tiki 21. The accommodations inside each hull provide a 12′-long bunk that is 2′ wide; the hulls span 3-1/2′ at the sheer. Our sleeping accommodations are often a two-person tent set on deck, or my girlfriend and I can get cuddly and sleep in one hull if needed. All of the bunks are above the waterline, and under them are the bilges, which provide loads of storage. The load capacity is listed as 1,000 lbs. The bows and sterns all have watertight flotation chambers. The anchor locker doubles as another flotation chamber. The Tiki 21 has six bulkheads in each small hull, making it a strong little boat. Resting between the akas is a plywood deck measuring 6′ x 7′ that never moves far from level when under sail. For my own preference I built a slatted cedar deck instead of a solid plywood one, and it has since been approved by the Wharram Design team.

Rory McDougall sailed his modified Tiki 21, COOKING FAT, around the world in the early 1990s, and until just recently he held the record for sailing the smallest catamaran in a circumnavigation. He experienced gales pushing waves up to 30′, and his boat suffered little damage. In 2010, McDougall sailed in the Jester Challenge, a single-handed transatlantic race for boats between 20′ and 30′, and came in second after 34 days under way, just a few hours after a larger monohull. When in storms, McDougall goes on his sea anchor and reports that the Tiki rides very happily and calmly. In his first gale on sea anchor, he even felt so relaxed that he tied a jibsheet around himself and jumped overboard to swim the swells!

The stories of COOKING FAT’s performance convinced me that a Tiki 21 would easily manage any conditions I’d be likely to encounter. If you’re looking for a small and easily managed coastal cruising catamaran to build, then I couldn’t recommend the Tiki 21 highly enough. In fact, it is my favorite boat I have ever sailed. For an adventurous couple with goals of gunkholing and cruising the coast, this vessel is simply what dreams are made of. The estimated building time is around 400 hours. I spread my time over about a year and a half and spent roughly $10,000. For my time and effort I got an outrageously capable, fast, safe, and well-mannered cruiser and daysailer.

Brad Ingram lives in Birmingham, Alabama, and enjoys sailing, running ultramarathons, and climbing. He spent eight years in 20th Special Forces Group on a small Intelligence team, and he’s now going to nursing school as a civilian. He plans to travel while working as a nurse, making it easy to spend a significant amount of the year traveling in the mountains or at sea. Among all of his recreational pursuits, sailing occupies the lion’s share of his enthusiasm and interest. He mostly enjoys small boat cruises and small, raid-type multihulls. He has a passion for simple, traditional vessels and enjoys sailing sport boats as well.

Tiki 21 Particulars

[table]

Length/21′

Beam/12′

Waterline length/18′6″

Weight/790 lbs

Load Capacity/1000 lbs

sail area/208 sq ft

[/table]

Study plans (£19.00) and full sets of plans (£505.00) are available from James Wharram Designs.

Is there a boat you’d like to know more about? Have you built one that you think other Small Boats Monthly readers would enjoy? Please email us!