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Wharram Tiki 38 catamaran
Equipment: Titled in 2004 Copies for most the Wharram tiki 38 plans included Force 3 burner stove with oven ( needs new battery for the lighter) 2 fiberglass propane cylinders 3x100AH battle born lithium batteries 400 watts solar panels Victron Energy BMV-712 Smart Battery Monitor Victron energy solar charger MPPT 100/30 Vhf radio Matrix AIS/GPS (GX2200) Globalfix pro 406mhz GPS EPIRB Aqua signal tricolor mast light Edson 32in steering wheel CPT Autopilot coupled to steering wheel 2 Lewmar two speed winches 1 Anderson 52 2 speed winch for rode and chute 1 66 Manson supreme anchor 1 44 Spade anchor 1 lightweight large Fortress anchor Manual windless 2 2018 Yamaha 9.9 XPB remote control/electric trim Galley sink with bronze seacocks Head sink with compost toilet Jib, formain, main (fair condition) Spinnaker and sock (great condition) Dyneema forward and aft nets Also big front hatches Vetus ( not installed) Located Niceville Florida
As is no warranties or sea trials. Good project boat or use as is . Sitting for 2 years and needs a haul out with bottom job and a few project repairs.
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)
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