Saturday, January 31, 2009

A Revolutionary Rig


I've been commissioned by a couple from Hong Kong to build a 40-foot sailing catamaran to a custom design by Albert Nazarov. Construction begins at the Jomtien yard this week.
Designed for short-handed, long-distance cruising, it features an unusual, even revolutionary rig called an 'aft mast' – a phrase coined by its designer and energetic developer, Brian Eiland, who also refers to it as a 'single-masted ketch' – because the slender, lightweight spar is set well aft and sets two large headsails but just a very small, high-angled, short-footed mainsail (imagine a low-aspect ratio windsurfer rig!) set within a wishbone. The lack of a boom makes a spacious flying bridge a practical option, without the danger of a boom close overhead.
The headsails are roller-reefing and easily managed with adequately sized two-speed winches. The alloy mast is simply supported, with twin backstays led to the transoms of both hulls and an aft-swept diamond arrangement for the uppers and lowers. The hull is sandwich coremat, while the bulkheads and superstructure will be mainly closed-cell Nida Core. I plan to deliver the vessel by sea to Hong Kong in the spring of 2009.

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