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Dabei seit: 06.04.2008 Beiträge: 710 Wohnort: Da so

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The Presto 30™ is a new boat with a long history. Inspired by Commodore Ralph Munroe's round-bilged sharpies but put to the test by modern design development and marine engineering, the Presto 30 is a fast, [color=#0000BF][color=#0000BF]capable boat for shoal or deep-water sailing.[/color]

The Presto 30 is a 30' trailerable performance cruiser. The twin un-stayed carbon fiber masts and wishbone booms make for simple sailing while the shoal draft allows you to explore secluded harbors and waterways off-limits to keel boats.
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Why two masts? The two masts allow more maneuvering and balance control than a sloop rig on any point of sail and, when reefed, provide very stable steering. The fact that the sails are small (185 and 205 sq. ft) (17.2 and 19 sq. m) and low generates more driving power than heeling force, which helps keep the boat on its feet. The standard sail plan is a traditional sharpie rig with tapered, sealed, unstayed carbon masts from Forte Composites, and triangular, battenless sails and simple sprits.

An optional high-performance sail plan includes lighter weight, Hall Spars prepreg carbon masts, also sealed and tapered, with fully-battened, roached sails and wishbone booms.

All sail controls can be run aft to the cockpit.
Centreboard & Rudder:

The Presto 30 ™‘s fiberglass centreboard & rudder are essential to the safety and function of these boats. The basic tenet is that if you can reduce the area of the sails (reef) the sails you should be able reduce the area of the ‘keel.’ It is logical that when caught in unpredicted rough weather, as long as there is sea-room (or lake room) to leeward, partially lifting the centreboard to reduce its area will allow the boat to slide easily to leeward without tripping over a deep-rooted fixed keel.

The board also makes these boats practical cruisers by allowing easy launching and retrieval by trailer. The board is lifted and lowered by a 5:1 tackle with the tail coming to the cockpit.

The rudder has both up and down lines located on the tiller.

Mehr:
http://www.rodgermartindesign.com/portfolio.php?item=82

http://www.ryderboats.com/photogallery.html

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