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By Frank Hagan With Peter and Mike Stevenson
GAFF RIG: Now that we know Mikes role, how would you describe yours? PETER STEVENSON: "Chief Fabricator." Since our design process has a lot to do with not locking in the ideas you cling to until you know they work, we design in the medium, sculpting the shape in the wood as we go and running performance tests before we start putting in a lot of time varnishing things. The more time you invest in a certain design, the less youll want to make those changes that could make it a great performer. GAFF RIG: What was the first sailboat you designed? MIKE STEVENSON: The first boat I remember working on was
the Amphora, an eight-foot precursor to the Triad. We just received an email a week ago
from a high school student whos building one. The Amphora was the second of a series
of three projects designed to be built by kids with minimal adult assistance. These were
presented in book form. Perhaps one of these days well transfer the Amphora
information to plans form. GAFF RIG: How did yours turn out? PETER: Mine was a Polynesian style multi-hull I optimistically dubbed the "Hello Honolulu." I learned about building light from that boat. Its components were heavy, which made it weak in turn. Wed worked it out into the surf when a couple of big surfers pirated the boat. Just when wed made it back to shore we saw a huge wave coming that tumbled the whole display landward like a bunch of dice. Next time I would pay more attention to structural integrity (and test when there werent big bruisers around.) GAFF RIG: Most of us cant imagine starting from scratch rather than building to an established plan. Can you describe the boat design process? PETER: Thats a role attitude you get when following others plans. I do the same thing when I use somebody elses directions. Some designers will take advantage of this role attitude to seem like magic gurus of the dark arts of boat design. But being able to make a new boat is just like any other body of knowledge. It takes a lot of experience to stop making mistakes. Around here, we get our boat designs from on the water experience. GAFF RIG: Do you draw up detailed plans and then head to the shop, or do you start in the shop with mock ups? PETER: We dont trust formulae. This doesnt mean that you cant measure a boat that works and work out numbers that describe it. It means that when you start extrapolating these numbers in new situations, the whole thing falls apart. We proved that to ourselves in our late teens when my brother and I built a 24 catamaran following every formula we could put our hands on. "Rudder immersed area shall be 1/12 the profile wetted surface", "Sail center-of-effort is located at the junction of the bisected corner angles" all that malarkey. Nothing worked and everything had to be changed before the boat would sail. We took a second look at how these "professional methods" were arriving at concepts like center-of-lateral-resistance and sail-rig-center-of-effort, and saw that they were making up methods that had nothing to do with sailing realities. But they sounded good to rich clients. How can you figure the center of effort of a sail when its constantly changing in actual practice? When we realized that professional designers were placing sloop, ketch and schooner rigs on the same hull, we knew they were just handing people a lot of bull. And the way the boats handled proved it. GAFF RIG: Is that a trial and error method, then? PETER: We began to worship in-use trials and constant changes until the boats really performed sweetly. Many times we wouldnt even paint the boats for their first trials. The real reason we started making boats that could really sail was that we built a bunch of them in close succession and could make changes to improve the next one. If you look at [famous sail boat designer] Herreschoff, I cant help thinking that in the quick succession of boats he created, it was just possibly the constant flow of new boats being built by him that led to the nice handling characteristics as much as any vaunted magic genius. GAFF RIG: Who were your design mentors in the early days? PETER: There was a heavy surfing influence in the early
days. Creative designers like Dale Velzy would lend us boards to test and we slowly built
an eye that could see performance by looking at the shape of the board. Later, in
Hawaii we were supplied with a constantly changing array of boards to ride, which
honed our eye a lot. GAFF RIG: Besides Velzy, you were involved with Hobie Alter, werent you? PETER: We did some prototype building for Hobie, the creator of the Hobie Cat, and his design savvy made a big impression on us. We sailed in the early wood prototype of the Hobie Cat and listened closely to what Hobie had to say about creating boats that were actually almost design-organisms each part designed not only to work, but to also affect the parts it was connected to in a way that was successful in the overall performance. Hobie broke a lot of established design rules with the Hobie Cat. It became the single most-produced sailboat in history. GAFF RIG: How did you get started designing boats for the home builder? PETER: Dave Rogoway at the American Plywood Association came to see the toys we had made, and we had a plywood land-sailer under construction in the living room. When he learned we had built a number of plywood boats, he got in touch with Art Hettich, editor of Family Circle Magazine, who wanted to run a small sailboat design as a feature. GAFF RIG: Family Circle Magazine? PETER: None of the name designers would touch the project. Run a DIY sailboat design in a womans magazine? But we were hungry and took a chance. The boat sold 12,000 plans in a hurry, and Hettich wanted as many more as we could produce. GAFF RIG: So you were "off to the races" then with your boat designs? PETER: Other magazine editors caught sight of the boat-project reader response figures, and we ended up building many more boat themes for Popular Science, Better Homes and Gardens, Popular Mechanics and Home Mechanix. It was hectic for almost a decade until a new generation of editors came in and wanted their own look for their magazines. GAFF RIG: How many plans have you sold? PETER: In all, over a third of a million plans have been sold by Stevenson Projects, the majority being boat plans. Im told the "real boat designers" werent so happy about the number of plans we were selling in those days. GAFF RIG: How many of the "pocket yachts" plans have you sold? And how many are built? PETER: Upwards of seventeen thousand Weekenders, about eight
thousand Pocket Cruisers and five thousand Vacationers. Its hard to judge how many are
actually built. When we first sold 29,000 little catamaran plans we wondered how many were
built, so we started calling builders to get a guess. Almost none had been built. Nothing
was wrong with the plans; the potential builders would break them out and look at them
every now and then. Only about two to four buyers actually built the boats. But when we
got to the Weekender, that all changed. GAFF RIG: Do any of those builders really stand out? PETER: We love getting the feedback from all the builders. But
two stand out in our minds. Both are on the website. Mike Bailey, the fifteen year old who
wouldnt let an adult touch the boat until he could take them on a ride was a great
experience for us. His mother tipped us off on his project. Hed scrounged much of
the materials, cast his own fittings, rigged an extensive electrical system with all the
luxuries you could dream of in a 19 yacht, and went sailing with us, side by side.
That was fun. Mike went on to design his own catamaran for production. GAFF RIG: There was a dry period between all those magazine articles and the current revival in back yard boat building. A well-known boat designer is quoted in Wooden Boat magazine as saying he gets more plans sales from the Internet than all his print advertisements. Is the Internet driving the boat plans for you now? PETER: We had to move on to other ventures when the magazines quit publishing the articles. Full color ads didnt pay for themselves in response rates like a full-blown article does. But we couldnt just shut potential leftover Weekender builders down without a supply of plans, so we kept it just barely going as a service to builders who wanted to build. We got in early on the web to see if it could give us a new venue. The ad we now run brings people to the Net where they can meet other builder-skippers and get their boats underway. Now things are changing again, and were able to justify putting some effort back into the project. Momentum is building steadily and within a year or so I hope well be able to have critical mass for some really fun events. The 20th anniversary of the Weekenders introduction is coming up. We think a celebration is in order.
Next time in The Gaff Rig Interview: Peter and Mike tell us if theres a 24 Blue Water cruiser in our futures, discuss the history of the Pocket Cruiser and Vacationer, possible updates to the Pocket Cruisers, a totally new version of a venerable day sailer that just might come next, a design discussion of stressed skin verses stitch and glue construction, the PWC that was but never was, and just maybe a Weekender 20th Anniversary Celebration (well explain about the canons too, of course.)
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