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This Vanderstadt and McGruder is the perfect compact fibreglass sailboat for weekend (or longer) cruises as well as daysailing. A lively performer in even light winds, these boats really hold their value. Her mast is a breeze to step and take down, she’s got a large cuddy cabin for this size boat, and pulls like a dream behind even small cars (boat weighs around 800#s). The compact cabin has ample room for overnight stays on the lake (and you can’t beat the gas mileage on a sailboat ;) A little about our boat for sale: 1979 Siren 17’ Sailboat - self-righting when centerboard is locked down Good condition single axle tilt trailer with swing front wheel for easy moving Fully retractable 150 centerboard 1 Main and 1 roller-furling jib with stowage bag � Both main and Genoa are in fine shape Solid Rigging Tiller steering with removable rudder Large comfortable self-draining Cockpit � seats 4 adults All nicely upholstered cushions for Cabin Cabin can sleep two adults and two children Included with full asking price: Outboard electric motor with new deep cycle battery
The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.
Classic hull speed formula:
Hull Speed = 1.34 x √LWL
A more accurate formula devised by Dave Gerr in The Propeller Handbook replaces the Speed/Length ratio constant of 1.34 with a calculation based on the Displacement/Length ratio.
Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio.311
Hull Speed = Max Speed/Length ratio x √LWL
A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.
SA/D = SA ÷ (D ÷ 64)2/3
A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.
Ballast / Displacement * 100
A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.
D/L = (D ÷ 2240) ÷ (0.01 x LWL)³
This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.
Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam1.33)
This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.
CSV = Beam ÷ ³√(D / 64)
One of the most successful production sailboats built in Canada (in this size range).
This listing is presented by SailboatListings.com. Visit their website for more information or to contact the seller.
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