Dalliance – A Self-Designed Micro-Cruising Trimaran

Today we hear from sailor Ron Falkey and the story of his self-designed and self-built micro cruiser trimaran named Dalliance. Ron really gives us a great read here because he spares few details.

Let’s get right to it. (And thanks Ron for sharing this great info with us, along with the photos and sketches of your boat.) — Joe

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Dalliance: A Micro-Cruising Small Trimaran
by Ron Falkey

Getting Into Sailing

dalliance-micro-cruising-trimaran-1How did I get into sailing in the first place? The answer to that is simple — my father provided my introduction, education, and inspiration to boating and sailing. I am not sure where or when the boating bug bit him, but he did his best to spread it along to his three sons. Through him I had my 1st boating experiences and built two other trimarans.

My dad was a civil engineer and eventually worked that into positions where he could make his living related to his love of boating. He designed marinas including the ones at Miami Beach on Government Cut, the Ocean Reef Yacht Club on Key Largo, and the one at Bahia Honda State Park, to mention a few. Then he became the general manager for Merrill Stevens Boatyard and Marina in Coconut Grove.

It was in this job at Merrill Stevens that he had the thrill of hauling and repairing Jim Brown’s personal trimaran, Scrimshaw, and the honor of having Jim and Barbara over to the house for dinner. Of course they spoke about trimarans, Scrimshaw and Yankee, and dad’s dreams for his next boat. He wanted to build one of Jim’s new SIB Constant Camber designs. Unfortunately he passed before he got the chance to build that next boat.

When entering Jr High School, I received a 17′ canoe as a shared Christmas present with my older brother. We paddled everywhere; including an overnight trip in Everglades National Park with my uncle from Flamingo to Cape Sable and back. However, it wasn’t too long before I discovered that letting the wind help move the boat could be far more enjoyable. My brother and I built a sailing rig of bamboo and plastic sheeting, and used the paddle as our makeshift rudder.

Later, Dad had a 60 sq ft lanteen sail made by a Coconut Grove sail loft, and fabricated aluminum pipe and tubing into the mast and spars. I crafted the leeboards and rudders (the fists rudder was a shallow draft barn-door design that was soon replaced by a balance high aspect blade). My younger brother and I would paddle it down the canal behind our home, out to the intrusion dam at the bay. There we would portage over the dam, and go sailing to Chicken Key on Biscayne Bay.

However, in growing up and older, graduating from the US Coast Guard Academy, pursuing my career(s), and raising a family, my involvement in boating slowed drastically. It would be several years between excursions on other people’s boats.

Serendipity brought me back to the love of boating that had long been in my blood. The “development” of this boat started soon after my wife and I moved to Tallahassee from the Virginia suburbs of Washington, DC.

sca-cvI had stopped my subscription to Charles Chioti’s “Multihulls Magazine” many years ago. I had been become disenchanted after he belittled the Tremolino and small trimarans in an editorial. “Multihulls Magazine “seemed to become fixated on large cruising catamarans, and ignored or discounted the continuing interest and development in smaller pocket and camp cruising multihulls. Then, in a Tallahassee book store I chanced upon the cover of a boating magazine featuring the photo of an aggressively sailed Farrier Corsair 24.

Because of the Corsair, I bought the magazine. And in that issue of Small Craft Advisor (issue #28 Jul/Aug 2004) was the article of “Two Grandpas Win the Everglades Challenge” by Doug Cameron (aka RidgeRunner of the Watertribe). They talked about the Everglades Challenge, and how they took top honors in this endurance event in their outrigger equipped Sea Wind Kruger Canoe. The fact that, with its jib, twin masts and twin inflatable amas, it looked to me to be a mini trimaran; and that was enough to get me hooked again.

swkcRidgeRunner’s article was later published online at the Watertribe website and can be found at the following URL: http://www.watertribe.com/magazine/y2004/m08/dougcameron.aspx

That article and subsequent issues of SCA helped give me a new perspective on what a sailing craft could and should be. The simpler (and that often means the smaller) a boat is, the more likely that it will be used regularly. That was my first copy of Small Craft Advisor, and I have not missed an issue since then.

I then started following the Watertribe Blog. Chief (Steve Isaac) had an article on his small tri rigged kayak “Wango Tango”, and Chris Ostlind had an article on one of his early designs, the “Wedgesail A18; A Dual Purpose Coastal Cruiser” – http://www.watertribe.com/Magazine/Y2004/M08/ChrisOstlind.aspx

khcFrom Watertribe and Chris, I came across Kellan Hatch on the Duckworks website. Duckworks is an excellent source of reading and inspiration.

Kellan’s article “A Curious Boat For Questionable Adventures” sealed the deal; the boat bug not only had bitten, but there was a realistic “treatment” available. – http://www.duckworksmagazine.com/02/articles/curious/index.htm

I didn’t have to have a boat big enough to live aboard and that would be costly in terms of time and money. I could have a small boat now – and enjoy the waters of the Florida Panhandle. Then I came across the Cedar Key Small Boat Rendezvous and the great folks of the West Coast Trailer Sailing Squadron (WCTSS), and my boat designing, building and sailing adventures were on their way.

On Multihulls in General … and Trimarans in Particular

Again – the answer is dear old dad. I often wish he was still around to share ideas, new designs, thoughts, and all the excitement associated with boating and the resurgence of small multihulls.

A short while after getting the canoe rigged and sailing, my father expanded my horizons again. He gave me wonderful life lessons in using tools, building self-reliance and of course taught me the virtues of multihulls.

In the late 1960′s, to get a boat with the room needed for a family of six, you would need to get a very large monohull; something like a Morgan Out-Islander that was a sailboat mostly in name, and only off the wind; or build your own multihull.

My father, brother and I built two trimarans — Tryst and Yankee.

• Tryst was an Australian design from Headly Nichol; his 29’ Islander. It was an excellent and forgiving design for the novice builder and sailor. She had solid wing decks; 19 foot of beam; a cabin with an enclosed head, galley, two permanent wing berths, and a settee that sleep another two, as well as a hammock in either float (providing wonderful out-of-the-way private bunks with as much fresh air as you wish rolling in through the deck hatches above the hammock); a 10 inch deep, nearly full-length, low aspect keel; and a balanced rudder that hung no lower than that protecting keel. We had her out on Biscayne Bay at least twice a month, and were able to work in trips to the Bahamas and the Florida Keys.

• Yankee was a Jim Brown Searunner 25 (Sail # 259). She was cutter rigged and she would scoot! I did not get to sail on Yankee as much as I would have liked. Six-months before she was launched, I entered the U.S. Coast Guard Academy and started career in the USCG than spanned 21 years of active duty. My father and younger brother are the ones who really enjoyed Yankee. Nevertheless, every time for the next several years that I was on leave and able to come back to Miami, we would find ourselves on Yankee on the bay, or on trips to Bimini.

The lighter weight, shoal draft, greater stability and speed of multihulls have been the deciding/appealing factors for me in their favor over “Unimarans” (at least that is the term my dad coined for those more traditional single-hulled sailing vessels). Within the realm of multihulls, trimarans for me have always been more appealing. I like the nod toward tradition that a tris’ central hull allows for cockpit and cabin layout. And I have never liked the catamarans’ strange helmsman seating needed to see ahead over a large/tall deckhouse.

Additionally, many trimaran designs focus on performance, while catamarans of the day (plus some misguided lines of tris, like Ed Horseman’s) seemed more concerned with accommodations. For the family sized catamarans, sailing performance was a secondary consideration and they suffered for it. This view of catamarans as a lumbering class of floating “time-shares” gave birth to the pejorative term “Roomarans”. Thankfully the pendulum seems to have swung back a bit and charter cats are starting to see improved handling under sail.

My early favorite multihull designs leaned toward the sleek and fast (and often less practical) trimarans.

My list of favorites included:
• Norm Cross’ 26 and 27 footers
• Headly Nichol’s Privateer, and
• Lock Crowthers’
— Buccaneer 24
— Kraken 33
— Kraken 40

My current list of favorites is very different. My tastes now lean toward a boat around 6 meters, capable of day saiiling two to three, camp-cruising one to two, and not nearly as shrill as the Krakens or Buccaneers.

It has to give its crew a way to avoid excessive exposure to the sun; be folding or collapsible and small enough to be “moored” on a trailer in your yard/driveway; easy enough to rig quickly single handed; and ultimately be quick and nimble enough to be fun to sail. In my humble opinion, Ian Ferrier and Ray Kendrick currently have some of the best designs in this category.

On the Design & Building of Dalliance

chdDalliance is a self-designed, self-built micro-cruiser trimaran. I identified the requirements over time, and drew up plans that mostly meet the priorities. However, it is not accurate to think of her as the outcome of a design exercise.

She more or less evolved over time, and is the culmination of a progression of incarnations designed to address changing situations and requirements. If I was to start from scratch, and could reinvasion her, Dalliance would likely be longer (say about 19’), hopefully a bit lighter, and powered by a more aggressive sail plan. But for now, with last month’s introduction of telescoping akas, I believe she is “complete”. Except for unavoidable ongoing tweaks to incrementally refine and improve, I do not foresee any major (perhaps you should read “costly”) modifications.

So Dalliance, while I love sailing her, is not a perfect boat. But then of course, there is no such thing as a perfect boat. All boat designs grow from the process of determining the highest valued (or at least the least offensive) compromises between conflicting design constraints or requirements. And all requirements change with perspective, and are unique to each of us. Some of my primary requirements for designing Dalliance included:

• Minimalist coastal camper-cruiser
— Hard (vs. tent) cabin to get out of the sun and weather
— Ability to accommodate two, but must have space for one to sleep enclosed below deck
— Cabin sole wide enough to fit my shoulders, laying on my back
— Sitting head room below deck
• Sail Plan
— Be quick cruiser, but not a racer
— No spreaders or diamond stays
— Manageable without winches or multi-part sheet blocks
— Roller furled head sails
• Easily Trailered — with assembly, launch and recovery to be done by one person
• Value/Frugal Oriented — repurpose and reuse where ever practical
• A boat one can be proud of

There are a number of designs and designers that influenced in the requirements and design process.

How Long to Build Her

That is simple question, but the answer is not really that simply. Nevertheless, here is the short answer. In Dalliance’s current configuration, it took about 13 months of construction time. In retrospect I wish I had added the extra effort/time to maintain a construction log; but here is brief summary.

• Time to build (current) Main Hull – 9 months
— Started lofting the bulkheads and hull panels – MAR 2010
— Float Testing on local pond – DEC 2010
— Maiden Voyage/Sea Trials on Gulf of Mexico – JAN 2012

Duckworks Splash Announcement:

• Time to build current Amas – 4 months
— Lofting bulkheads and panels — AUG 2011
— Assembled and ready to sail — DEC 2011

However, there is a longer answer. Because Dalliance has been a progression of major changes and design enhancements, not the execution of a specific design, she came into being in phases between 2005 and 2013. Below is a high level overview.

oceanid-triOceanid the Kayak – launched in 2005

• Oceanid: A light stepping sea nymph; one of the 3,000 daughters of Oceanus. My two person CLC Millcreek was a light stepping sea nymph.
• Built part-time over 5 months from a CLC kit.
Oceanid the Trimaran – 2006
• New to this configuration:
— a Free standing mast, boom, and 55 sq ft sail from a 16’ Saroca sailboat
— Gary Dierking inspired Amas. Gary wrote a very good “how to” article titled “Foam and Fiberglass Ama Construction” that is still available online at http://homepages.paradise.net.nz/garyd/quikama.html.
— Commercially available kayak rudder
— Self-made leeboard
— Trailex aluminum small boat trailer
oceanid-tri-2Oceanid in 2007
• Same as before, but added:
— Folding mechanism for Akas/Amas
— Free flying 27 sg ft jib
— Homemade Roller Furler for Jib
— Cockpit Spray Cover
— Larger self-made kick-up rudder and leeboard

dalliance-micro-cruising-trimaran-2Dalliance – Christened in JAN 2011. Fashioned to be a Matt Layden’s Paradox like minimalist micro-cruiser in trimaran configuration

• Repurposed from Oceanid:
— Mast & Boom
— Jib — which became a staysail

• New:
— Main Hull with
…. Sleeping accommodations inside
…. Port-a-lue
— Multiple steering/piloting stations
…. Inside hull out of sun, wind and weather, and
…. On the wing nets/tramps when live ballast was needed for stability (that was typically in any wind above 6 knots)
— Sails
…. New professionally made 83 sq ft Mainsail
…. Homemade 65 sq ft Polytarp Jib
dalliance-micro-cruising-trimaran-3 — Demountable akas using two 12′ long 4” aluminum tubes
…. Akas lashed to hull
…. Amas were hung on and lashed to the akas
— Standing rigging to support mast, now stepped on the cabin top
— New Ida-Marine Rudder and Tiller
— Wing nets/trampolines
— Torqeedo electric outboard motor

dalliance-micro-cruising-trimaran-4Dalliance – 2012
• Repurposed from Oceanid:
— Mast & Boom
• New:
— Redesigned Amas
…. 150% displacement
…. Increased design (and maximum) displacement from 155 (185) lbs to 588 (1,166) lbs
…. Removed the need to climb about tramps like a spider monkey to keep amas above the water
…. Allowed helmsman to sit comfortably out of the sun, wind and weather
…. Deck hatches in amas for accessible storage
dalliance-micro-cruising-trimaran-5 — BIGGER Trailer
— Genoa and Staysail from professional sail loft
— Harken Small Catamaran Furler for Headsail

Dalliance in 2013
• Repurposed from Oceanid:
— Mast & Boom
dalliance-micro-cruising-trimaran-6• New:
— Replacement Telescoping 12’ Akas
…. Used one of the existing aka tubes cut in half
…. Added four new 50” long 3.5” aluminum pipe inserts/extensions
…. Reworked existing Ama Brackets into 4 new brackets to mount Akas to Main Hull
…. Hired metal fabricator with CNC waterjet to machine 8 new mounting brackets mount Amas to Aka extensions
…. Powder coated tubes, pipes, and mounting plate assemblies
dalliance-micro-cruising-trimaran-7 — Moved the Aka mounting points 12” further back on the amas
(this was done to address a comment from Jim Brown that to his eye it looked like the cutter rig might put pressure on the lee bow, and she could use more floatation further forward – I took Jim’s advice)
Estimated Cost of Dalliance in her current configuration is approximately $7,850

• Torqeedo – $1,435
• Sails – $860
• Mast & Rigging – $350
• Trailers – $420
• Main Hull Construction & out fitting – $2,950
• Ama Construction – $960
• Telescoping Akas – $875

The Greatest Challenges to Her Construction

Although there were times when I found the builder in me cursing the designer for not having thought through all the complexities and specify the sequence of steps needed to bring the design to fruition, the construction of the boat was still rather straight forward, and other than finding the time, it was not that much of a challenge.

• Main Hull
— I designed the main hull using Greg Carlson’s Hulls freeware application. It was an easy to use, intuitive tool that helped me quickly create and change design parameters. It is a bit limiting in only allowing you to set up four bulkheads (including the transom, about which it splines the selected number of chine panels
— My design followed the basic lines from John Harris’ CLC Pacific Proa. I purchased a set of John’s Mbuli plans; then asked if he had any objections to my using the lines from those plans—but with significant modification. Including:
…. shortening it to 87% it original length by rescaling it from 20′ to 17.5′
…. stretching the beam at the cabin sole to 150%, increasing the initial 16″ up to 24″ to provide a wider sleeping area
…. Shortening the cabin height by a couple inches to help retain some of Mbuli’s original look and keep her from looking too squat, despite the shorter and wider hull.
John was very gracious and agreeable; he gave me his blessings, as long as it was clear this was not his design and he was not responsible for any changes I chose to make.

— Here are some basic comparison stats between the original Mbuli and Dalliance:

compmb

— I used the stitch and glue technique for the five panels of 6 & 5 mm Okoume plywood that made up the main hull.

• Amas

dalliance-micro-cruising-trimaran-8For the Amas I used Carlson’s Hulls application again, but supplemented that with “Free Ship” for better data and planning. Although the plans were drawn up with 12 panels (i.e., 6 per side), I wanted to have more organic flowing lines and did not want to use flat panel stitch and glue construction for the amas. I debated between doing them as strip built (which would have been first for me) or as double diagonally planked, cold-molded hulls.

Because of its strength, structural stability, and my familiarity with the technique from building Tryst, cold-molding won out in the end. I took the hull forms generated via Carlson’s Hulls, and then faired and smoothed the bulkheads by splining the points of the hard chimes when lofting them. I then added stringers and began the skinning with two layers of 3mm Okoume plywood, topped with epoxy over 5 oz. fiberglass.

The real draw back to cold-molded construction is there is a need for a great deal of attention to detail, as well as filling all the holes in the outer skin and lots of sanding, if you want to end up with a fail hull form. That is why I jokingly say that Dalliance is a good 25 footer; that is, she tends to look best from at least 25 feet.

The real challenges for me were in some of the engineering and design issues that took me time to research, cogitate on, and finally work out.

Calculating design weight estimates and corresponding waterlines was not simple. That is one of the reasons that I ended up selecting John’s Mbuli as the form for the main hull. Besides the classic lines, with a double ended proa, I did not have to worry so much about the height of the transom and the resultant drag it would create if it was submerged further than I expected.

For the replacement Amas, I did not want to fly one or the other when sitting at anchor or a dock, like the reused ones from Oceanid did. This makes for a disconcerting time below decks as the wind, waves, or crew weight shifts.

I worked hard on the design to get the Amas to the point where they just kiss the water when the boat was at rest; and also have them support about 550 lbs displacement without burying the transoms, at their designed underway waterline.

chd2

Performance Under Sail

I am generally pleased with the performance I have achieved with what I’ve used. Admittedly, at 19′, her mast is very conservative (or short) for a boat with her stance and stability. A taller mast and increased sail plan would improve her speed. However, it’s possible that a taller rig might not actually improve her intended “performance”.

Dalliance is a micro-cruiser, not a racer. And she excels at providing a dry comfortable ride, with ready-to-use (i.e., no assembly required) camping like conveniences once you stop for the day. However, I do find myself wishing she would foot a bit better to windward.

Because of the deck/topsides layout and resulting sheeting angles for the head sails, when going to weather she points highest under main and staysail. She will point 45 degrees to the wind, and with leeway factored in, will make an honest 98 degrees between tacks under main and staysail. She tacks smartly with the board down. However, in really shallow waters, with the board way up, you have to plan your tacks, and backing the jib is helpful in getting her bows all the way through the wind.

She is very comfortable to sail from the protection of the cockpit/cabin. And although she is not a multi hulled screaming sailing machine, other than other multihulls, there are few boats I’ve sailed with that outpace her.

• Speeds (so far)
— The best sustained speed I held for 30 minutes or more at a time is 8 knots
— The highest speed I’ve seen on my Garmin GPS is 12.3 knots
— During the Florida 120, it seems that I did a lot of 5 to 6 knot passages — but that typically kept me up with or ahead of the fleet (including the 21′ Sea Pearls and Sea Pearl Tris).

As reported in SCA Issue #71 by Al Sweany in his article, My First Cruise, a report from the Florida 120, on page 38, “Two of the faster boats (a cutter rigged trimaran and a CL-16) flew by. They always seemed to start last and finish first.”

Sailing anywhere between a close reach and a broad reach she is a joy and puts a smile on my face. However, I have found, like in 2012 FL 120, in a rough chop or when footing quickly through waves, and she exposes the bottom of her hull to the waves, there can be pounding that both slows and annoys me.

What to Love About This Micro-Cruiser Trimaran

What I love best:

• Dalliance is a micro-cruiser…. And she excels at providing a dry comfortable ride, with ready to use camping like convinces once you stop for the day.
• Despite technical shortcomings of the designer, she does perform well and has very pleasing lines.
What I would like to change:
• I wish she would foot better and track a bit higher when going to weather.

A Great Day of Sailing Aboard Dalliance

While sailing the local waters around St Marks, Shell Point and even St Georges Island, I’ve discovered that I do not get as much solace from solitary outings as I had thought. I really enjoy sailing in the company of others; having the friendly competition that seems inevitable when two sailing craft are heading in the same general direction; and being able to enjoy good fellowship at the end of the day over a meal and (preferably) a campfire.

dalliance-micro-cruising-trimaran-9With that said – I’ve found my most enjoyable sailing on Dalliance has been related to the Florida 120 (arranged annually by Scott Widmier) and the many West Coast Trailer Sailing Squadron cruises. Last year’s FL 120 was a lot of fun, and I believe it adds a little zest to have a destination to shoot for, even when cruising-in-company.

Here is a link to the WCTSS FL 120 photo gallery that along with capturing the feel of the event, it includes a number of pictures of Dalliance: http://members.ij.net/wctss/wctss/photos89.html

Additionally, Ron Hoddinott’s WCTSS is a great group that always seems to have a good time wherever they go. I’m not aware of a group of sailors that use and enjoy their boats more than the WCTSS.

I also am very fond of the times I’ve spent at the annual Small Boat Rendezvous at Cedar Key, FL. It is good venue for meeting good hearted, like-minded folks; swapping ideas and stories; and getting in as much (or as little) sailing on beautiful Gulf waters with sandy beaches as you like.

On boats other than Dalliance

• Sailing on the US Coast Guard’s Barque Eagle and racing against other tall ships, not around a course, but for the most miles made good in a 24 hour period, was a bit of a thrill;
• The many trips with my dad and brother to the Bahamas aboard Tryst and Yankee are also way up the list; and
• The summer of 1976 where I got to skipper the 48′ Bill Trip designed Touché in the Marble Head to Halifax ocean race and then throughout the Gulf of Maine Races Series was very special.

dalliance-micro-cruising-trimaran-10

dalliance-micro-cruising-trimaran-11

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22 Responses to “Dalliance – A Self-Designed Micro-Cruising Trimaran”

  1. Dan Says:

    Great job and story! I’ve loved your boat since day 1 when photos sneaked on the web. Do you have any detail shots of the seating, the hatch, and interior?

    Dan

  2. Ron Falkey Says:

    Dan, thanks! I have tried to take interior photos, but have not had any success just yet. Without a wide angle camera, and a small cabin, I am simple not able to get a photo that shows the layout. I am heading out on another WCTSS Cruise next weekend and if possible, I will see if I can talk someone into taking some GoPro/Fish-eye lens photos. But the interior is nothing lavish, the sauna and walk-in fridge had to be cut from the final plans ;)

    Would you be the same Dan as dstgean as I’ve seen posting on Proafiles and who created the trimaran version of Gary Dierking’s Ulua?

  3. ian Says:

    I too would like to see any cockpit details and/or hear how the centralized layout works in real life use…I assume that the narrow stern area is kept mostly empty?

    I know from having attempted it that drawing up a design like this with enough room to lay down inside is tough enough with a traditional rear cockpit, let alone a center cockpit…so that alone is a pretty neat trick.

    But to do it and still keep the entire cockpit area within the confines of a canoe type hull’s beam would seem impossible without it being a strictly one person affair…I totally get why cruising boats have small tucked in cockpits and there’s nothing wrong with a singlehanded cruiser- I’d just be interested to know if the designer thinks that some deck overhang that would allow more cockpit room would seriously detract from the boat’s comfort/safety margins, or if he’s had any experiences where he felt that a larger or more open cockpit or that type of overhang or counter stern might have been an immediate problem.

    Anyway, it’s a very nice looking package that appears capable of far more extreme sea handling than one would expect in typical weekend/coastal conditions…but then again, the reality is that coastal cruising often presents far more immediate dangers than being offshore does.

  4. Dan Says:

    I’ll be down in Sanibel over Spring break at my father and mother in laws. It would be fun to see your boat and talek microcruising multihulls. We are member ofa small fraternity here!

    Dan

  5. Ron Says:

    Ian (et. al),

    Thanks for your interest and kind eords.

    About the stern section, you are nearly correct; the stern section does remain mostly empty while sailing. That is where I keep my “pool float” foam matertress, sleeping bag and such stached out of the way during the day. After it is time to turn in for the night, that is where I lay down – feet aft whith my head under the open (or closed plexiglass hatch) with a great view of the mast, stars and whatever else is in the night sky.

    Of course the helmsman seat, comprised of a folding bench topped with a West Marine folding go-anywhere seat, collapse and get stowed out of the way.

    Dalliance is set up sysmetrically fore and aft, as well as port and starboard. There are five bulkheads, but for terms of cabin layout, there are only three, since the fore and aft most bulkheads corrden off two 24″ long floatation voids at either extreme. The central bulkhead is not a full frame, with a max web depth of 6″ and a 24″ passage width where it rises from the cabin sole/lower panel bottom chime. The forward and aft cabin bulkheads are about 35″ in front and behind the center bulkhead, but there are cut outs at the cabin sole to allow me crawl forward and aft — and stretch out both forward and aft (if I can resist toting along to much “just-in-case” stuff). Theoretically, I can sleep two below decks, but it would be very tight; and because my wife is not a sailor, and has already had surgery associated with too much sun exposure, she is pleased to let me have my own time on the boat while she minds the home front.

    Inside the cabin there are two drop-down table tops. One is located on the aft side of the forward bulkhead, and typically get used in cold and inclement weather. I use the folding helmsman seat to set on the cabin sole to sit at the table, or simply lounge and read out of the weather or misquito infested nights. The other table drops down at the hemlsman’s seat. It is used both while moored and underway, when it becomes my snack holder and Nav station.

    I had thought about a flared or overhanging cabin or cockpit, but not for this boat. I was trying to keep the BOA for the 1st iteration of Dallance to 6 foot or less to slip between two trees as rolling it up the side yard to it back yard morning. Ray Kendrick’s Scarab 16 is an interesting design you might be interested in if you (like me) are content with a tight fitting smaller boat (http://www.teamscarab.com.au/scarab16/design.html and all his plans are currently on sale for $150 each). Being the kind of guy I am, I have been noodling around with sketches that stretch the 16 out to 17 or 18 feet, and add an aft cabin with a conservative two to three person center cockpit. Our you can just jump up in size (as well as cost and complexity) to the Scrab 18 that is a very sweet and seemingly refined design. You might want to visit Ray’s website.

    Regards,
    Ron

  6. Ron Says:

    Dan, it is good to connect with you. You and your boats have been one of many points of light the lite the way to small boating for me. I first encountered your name in Gary’s book, “Building Outrigger Sailing Canoes” and your stretched Ulua on page 14. I see that you put it up for sale – that doesn’t mean you’re without a boat does it?

    I would love to meet you for real; and perhaps this spring that might work out. Besides Cedar Key in May, I am also trying to get away from work for the WCTSS spring get-away March 15, 16, 17 to Cayo Costa State Park in the vicinity of Sanibel.

    Maybe we can get together around that.

  7. ian Says:

    Hi Ron,

    Thanks for the detailed response…am I correct in assuming that first partial frame forward of the the aft watertight bulkhead aligns with the back end of the cockpit area proper, and that the center bulkhead forms the front and is located somewhere just behind the main cabin windows where it would be on similar center cockpit layouts? making the opening roughly 35″ long x the beam at that point?

    That would make sense but what is hard to see is how the area below the cabin line is treated and how the various sections of the boat seal off when you say-

    “The central bulkhead is not a full frame, with a max web depth of 6? and a 24? passage width where it rises from the cabin sole/lower panel bottom chime”

    -I am not sure if this means that the open vertical passage area runs all the way to a cabin sole/cockpit floor that runs full length between the two outermost bulkheads- a very well protected but essentially open design, or if there is some raised section of that bulkhead above the cabin sole at that point (or a traditional deck/foot well) that creates a dam to compartmentalize any shipped water and forms a separate cockpit and allows the cabin area to be sealed off?

    I’m just having a hard time visualizing it, as it sounds as if you are laying down in back on or near the cabin sole but are inside a sealable envelope and not just sleeping in the open cockpit- but the available pics don’t give a lot of clues and there’s obviously not a lot of room to put a deck or foot well *and* be able to squeeze underneath.

    I like the Scarab designs and the overhanging deck/cabin treatments are pretty straightforward and seem sensible…interior volume that adds reserve buoyancy is hard to not like, but besides your specific space needs your boat seems more oriented towards an elevated degree of endurance in less than perfect offshore conditions, and very flat areas like overhanging cockpit seats or cabins can not just slap hard in a seaway and help jar things apart, any sudden shift in the boats buoyancy centers as they engage with rising and falling waves can introduce some pretty significant forces when the waves are big enough to do that, forces that might move in ways that no one could really anticipate.

    The Scarab seems like they had that in mind and even with the open transom it would likely do fairly well if things got snotty on a short passage, but I’d pick your layout if I was going to be exposed to real open ocean stuff or was making coastal passages where the weather regularly got ugly.

    Or put another way- the Scarab would be perfect for sailing down the west coast of Baja, but I’d want your boat for clawing back up it.

  8. Dan Says:

    Ron,

    yeah, I’m dstgean as in Dan St. Gean–work email psuedomym. I did in fact sell my Ulua to Pete from Philly. I’m not boatless though. Messing about with Gary dierking’s Tamanu presently. Not sure If I’m going to stick with my present push to go double Tamanu cat–I’m set up to do that right now, or go trimaran & build a purpose built overgrown beachcat. With 3 kids now, I’ve been out fo the cruising game for 2+ years, but would like to get out soon. As far as the Wctts event, I’ll be down in Sanibel over Spring Break the last week in March. I’ll just miss you. However, I will be driving, so I might just be able so swing over to your direction if it is at all convenient. I had a chance to do the same with Frank Smoot last year in June.

    Dan

  9. Mark Gumprecht Says:

    Hi Ron,
    The new amas look great! She must be a different boat now. I wish I could get down there for the small boat get togthers, but it’s too long a drive.

    Mark
    Gypsy Wind

  10. Ron Falkey Says:

    Ian,

    Sorry for the slow response. Thank you for the very nice thoughts and words about my boat. From your participation on Small Trimarans its obviously you know a lot about various

    You said “I’m just having a hard time visualizing it”; I guess that is because Dalliance does not have a traditional cockpit. It is more like the arrangement on Matt Layden’s Paradox where the cabin also doubles as the cockpit, or like the cabin/cockpit of the Evergreen 6 catamaran, a design I admire despite the fact that for this site, it has one too few hulls (http://www.proafile.com/archive/article/evergreen_a_fast_expedition_sailboat). With Dri-Deck panels lining the cabinsole I can take a reasonable (but not bountiful) amount of rain/splash without putting a damper on on life below deck.
    I’ll try to get a photo or drawing or two posted to DropBox to help with the visualization. When I do I’ll post a link here.

  11. Ron Falkey Says:

    Mark,

    Thanks! The new amas, and now the improved akas, really do make her a different boat. I am pleased with the way she now assembles for launch, handles, and with their 150% displacement I no longer have to scamper from one wing net to the other to keep those old undersized amas from pretending to be torpedoes. When they would start to ,zip along below the surface it certainly retched up the pucker factor.

    I followed your build of Gypsy Wind and think you did a fantastic job both in the design and the execution! I have been looking around some more information on how well she performs at the usual boating sites. Is there somewhere we might go to find any post launce data, or maybe you can be talked into providing Joe with some photos and data. I do not know where you live, but it would be most welcome to meet you and get to see Gypsy Wind. Too bad Cedar Key or the Florida 120 are out of range.

  12. Ron Falkey Says:

    Dan,

    If you can get over to the Tallahassee area after your Spring break trip to Sanibel a visit would be most welcome!

  13. ian Says:

    Hi Ron,

    Thanks for the response; I’d love to see any interior or cockpit detail pics you might post, but I think I’ve got the basic idea now and it’s a sort of partially decked/partially open cockpit affair…

    it’s an interesting solution for a cruising setup and very practical- having the reserve safety of a more or less watertight capsule to get inside in bad weather is good for morale but in real life cruising, having a way to secure your stuff when you are nowhere near the boat is a more common reality and that kind of big barn door-like hatch that closes everything off is a nice way to do it.

    I’ve played around with similar sized design ideas and another option is a two piece hatch where one portion slides aft…it’s one way to get a longer opening on a tiny boat with minimal space, where a large one piece hatch would hit the mast.

    Especially with a very narrow canoe sterned main hull, that aft of the cockpit deck area will be mostly unused as working space so it’s a good place to slide a hatch section, and that section could even become a deck area in its own right when the cockpit “doors” are fully open if you extended the rails straight back in some sort of rigid framework (like a boomkin)…you could have a sort of a sliding deck overhang without the extra weight of a deck *and* a hatch.

    A hinged forward section is another “convertible” idea I’ve seen, where the forward hatch section forms an angled coaming or windscreen shape as it tilts forward, or stows in an accordion fashion for a bigger open area.

    The ability to batten things down completely underway is certainly a great benefit and the peace of mind thing is nothing to sneeze at, but in tiny cruisers like this I think the greater benefit is saving the weight of all that cockpit framing and decking and hatches, etc. so you can more quickly get out of conditions that might swamp you or would otherwise drive you down below to await your fate.

    The big problem of course is that hatches and seating just don’t scale down with the rest of the boat, so it really takes some doing to fit things in on something in this size range, and even when you *do* use the overhanging decks and hull bump outs a lot of the extra interior volume isn’t very useable as living space.

  14. Dan Says:

    Ron, I might just be able to do that. Tallahassee is out of the way, but it would be fun. Drop me a note at dstgean at yahoo dot com

  15. Stefano Says:

    Hello. Great job and thanks for sharing all the details and insight. Would you share with other perspective self builders the design of alas and retractable akas ? Thank you in advance Stefano

  16. Ron Falkey Says:

    Stefano,

    Thanks for your interest and nice words. i am glad to shar (some might say over-share) information on the technical aspect of the design. I have posted some photos and design drawing from my project to convert to telescoping aka at the following URL:
    https://www.dropbox.com/sh/srdjar9zcs1gcak/xUzcCTE6lt

    I am not sure how to post a non-photo file, so I will email the Carlson Hulls file, and the take-off tables I used to loft the bulkhead for the amas, to Joe to see if he might forward them on to you directly.

    Even though I built a trimaran instead of the proa, I followed the original design specs from John Harris for the akas for Mbuli. That way, as long as kept the sail plan a bit more conservative than the Mbuli’s 192 sq ft. I knew there would be no worry about structural issues. In the Mbuli the 12′ of beam is cantilevered out one span from the main hull/vaka to the one ama, and in my tri each ama is 6′ from the centerline to the outboard gunwale. The stresses are significantly reduced, and I confidently avoided the need for waterstays. In fact, it is quite likely the original demountable akas were well over engineered.

    The plans called for 12′ long 4″ O.D aluminum tubes with 1/8″ walls, and that is just what I started with — even for the minimal sized 198 pound displacement amas repurposed from my kayak trimaran, Oceanid. Then the akas continued to prove their capability with the new much larger and improved amas.

    Then, for the telescoping akas I consulted my metal fabricator about the available sizes and material strengths. I ended up using one of the original 4″ O.D. aka tubes as the central member for both the forward and rear aka assemblies. The outer portions were made from 3.5″ aluminum pipe with 1/8″ walls. Tubes are measured/sold by their Outside Diameters, whereas Pipes are measured/sold by their Inside Diameters. After having the tubes cut to length and the mounting brackets cut from 1/4″ aluminum plate by a CNC waterjet,

    I had the parts powder coated with a black industrial grade enameled finish. This left me with outer aka sections that slide into the central sections with just under a 1/4″ clearance. I would have liked to have gotten down to an 1/8″ or less clearance, but I just could not come up with standard sized, commercially available tubes or pipes to make that happen. To keep the outer sections from working/slapping inside the central sections, I created four series of thin wedges that are each strung together and tied around the outer section. They are made from black “Star Board” plastic, and span about 33% of the circumference of the outer sections . After the amas are pulled out to the full width sail positions, i drop in four large (1/2″) stainless steel bolts into aligned holes in the port and starboard sides of the forward and rear aka assemblies; then I use a rubber mallet to drive the circularly strung wedges into the approx. 7/32″ gaps. Then these are held solidly by four 4″ SS worm drive hose clamps — which all is concealed under the tramps. Each tramps is a simple one piece trampoline fabric (purchased from Sail Rite) that is looped over around the forward and aft aka like a tank/bull dozer track, and laced together in the middle on the bottom side of the port and starboard tramps.

    I hope these descriptions along with the photos make sense. But I know it is not easy to follow unless you are looking at it too. I won’t take it personally if you don’t get what I am trying to say.

    Regards,
    Ron

  17. Ron Falkey Says:

    Stefano,

    A couple of other things I meant to include in my previous post:

    The new telescoping akas added 22 pounds total (11 pounds each) over the prior demountable aka configuration. That includes adding the eight new mounting brackets.

    When fully extended, the outer sections still have just over 8” overlap inside the central sections.

    Here is a link to some images of the ama construction, and some comparative photos between the old and the new amas.

    https://www.dropbox.com/gallery/34739351/1/Dalliance_Amas_II?h=86f1e5

  18. Ron F Says:

    Stefano — I should add that the 8″ overlap was supposed to be 10″, but there was a mistake in making them. The metal fabricator ensured me that at 8″ the joints have more than sufficient strength; and I have yet to disprove his informal professional assessment, hope I never do.

  19. Stefano Says:

    Ron hello,

    Thanks so much for “over sharing” :-) that is what I needed. IT makes me willing to build again. I particularly appreciated the info on pipes and tubes… I miss the “OD aluminum” definition, which I might gues is “outside dimension” ??

    We seem here to be better off with outer-inner tubes for better compatibility ( less gap). I would definitely appreciate if you could share the files of the amas. My mail is stmoretti@alice.it.

    As for my five cents, I think that I will try to keep the rig rigid by anchoring the shrouds to the non extensible part of the akas and having waterstays at the same point. At 220 cm it would be the same span from which my catamaran mast was rescued from. Extra side strength would be added by diamond spreaders.

    I would have gone at solving the gap between the sliding and fixed part of the akas with a simple series of 2 inch e glass tape set in epoxy. Sounds simpler to me.

    In the magnum 21, the kas aare connected with the non extendible part for less than 8″, and while the rig is substantially larger than yours, the akas are 70 or 80 mm if I recall correctly, so yours should be more than safe.

    I would at last provide my shared part of experience pointing out that in some pics while at anchor your mast shows a tad of forward bending, probably due to excessive tension of the forward stay. If you tension more the staysail and get a standard backward curve, you may be able to correct the sail “fat” distribution (pulls it towards the mast where it belongs) and get as a bonus those few degrees of better windward pointing ability you were actually indicating as part of the wishlist for corrections.

    Yours friendly, Stefano

  20. Stefano Says:

    in previous comment please read “simple series of e glass rings”

  21. Ron F Says:

    Stefano,

    I will move further discussion, as well as copies of the Hulls file and take-offs, to email. But I do want to share with others (if anyone else is following this exchange) that I too was going to use the “simple series of e glass rings”. However, because Dalliance was a progression, and not a fully thought out design concept from the start, there were issues in retro-fitting telescoping akas. Althought I tried to execute a precise build, it turned out that the built in channels for the demountable akas were about a quarter inch out from being parrellel (which equated to almost 1.5″ difference in spacinging between the two akas at their mounting points on the port & starboard amas. With the drop in, single piece cross beam akas that was not a problem. the akas were lashed in place and then the amas mounted and lashed to them. I simply had some minor assemetry in the horizontal alignment, but the vertical alignment was good (or at least compensated for again when placing the individual mounting brackets on the outboard gunwales on the amas).

    When I went to convert the demountable drop-in akas with telescoping ones, that slight offset in alignment caught up with me. I decided to not deconstruct and rebuild the aka channels in the main hull, and The extra slack/clearence between the inner and outer sections actually facilitates being able to telescope the akas. If the fit was snug, I would have had a significant rebuild project to get them to work.

    I guess, to paraphrase the late Steven Covey, it is best to begin with the end in mind (if you can). Good luck on you project!

    This is being sent from my iPad; I send an email after I get back to my computer.

  22. Steve Says:

    Please send dropbox link for interior of this awesome micro cruising trimaran Dalliance. How much does she weigh?

    Steve

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