If the idea needed reinforcement, there’s been plenty of it in the news recently — big ship or small boat, there’s no room for complacency at sea.
The media attention devoted to the 100th anniversary of the April 1912 Titanic disaster reminds us again that the term “unsinkable,” at least as it applies to larger ships, is not an absolute.
Conducting a comprehensive sea trial is essential when buying a new or used boat. Do it right and you’ll obtain the data you need to purchase with confidence or move on. Do it wrong and you might end up buying a boat that’s a bad fit for you and your family.
When it comes to hull design, a smooth-riding boat is not only more comfortable but is also safer
Seldom can the heart and mind be more at odds than when falling hard for a boat and then inspecting it closely with a practiced eye. Although I can’t help with the palpitations, I can point you in the right direction when you evaluate whether her function lives up to her form.
The boatbuilding industry holds a trade show every year called the International BoatBuilders’ Exhibition & Conference, or IBEX. Although there are few boats on display, the show floor is filled with vendors selling the stuff used to manufacture them — fiberglass reinforcements, resins, electronics, windshields, seats and so on.
Just as big a draw for the boatbuilders, surveyors, naval architects and engineers who attend are the seminars on the latest developments in hull design, construction and repair, propulsion systems and more. I was asked to help conduct several seminars, including one on semiplaning boats. What you’ll read here is based on that seminar for which I was joined by Steve Dalzell, the chief naval architecture instructor at The Landing School in Arundel, Maine, and Winn Willard, vice president of C. Raymond Hunt Associates in New Bedford, Mass.
The quest for speed has long been a sort of Holy Grail in powerboating, and the stepped hull has played a role in that pursuit. Stepped hulls have been around since 1910 or so, when powerboat pioneers Gar Wood and Christopher Columbus Smith (founder of Chris-Craft), among others, used them on hydroplanes. The hydroplanes featured a transverse notch, or step, in the bottom amidships that reduced wetted surface at high speeds, thereby reducing frictional resistance.
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