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Hobie Miracle 20 in amazing condition and a one of a kind. Ready to sail with low hours sense (2019) restoration. Fully-battened mylar square top main (2018) Mylar Jib with cover and Spinnaker (2019) by Skip Elliott from Elliott Sailmakers with cover plus spare spin bag all in great condition with sailing bags.Self-tacking Roller furler jib w/forward crossbar takeaway system is very handy with the Spinnaker and cuts down on the lines laying on the tramp.Trampoline is in pristine condition.Hulls in great shape as well as the gel coat.2017 Carnai trailer w/LED tail lights, 2019 trailer box by “SailBox”, cat trax w/new tires and custom trailer mounts, mast raising support system and spare tire. New factory forward cross bar, new factory trampoline tracks, EPO3 rudders, carbon fiber boom, new factory comptip w/cover, standing rigging is all new, ALL NEW harken carbo blocks, new adjustable trap wires, bag for dagger-boards, Kinder Industries boatyard cover.This Miracle 20 is made to go fast and have fun “Is Not Hobie Race Legal”. Clean title and registration on the boat and trailer. Please contact me with any questions. Delivery is not included.Keywords: catamaran, H20, Nacra, Hobiecat, Hobie Cat, Beach Cat, Racing, Race, Regatta
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)
Sometimes referred to as the HOBIE 20.
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