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1983 Hunter 31 31’3” long 10’9” beam 5’3” draft 9700 lb displacement 4000 lb ballast Coast guard documented Great running yanmar 2gm Working autopilot 3 135%-150% Genoas 1 small working jib 1 spinnaker 1 loose foot mainsail with 2 reef points 2 110 amp hour house batteries 1 110 amp hour start battery Aluminum mast compression post All necessary safety equipment included Just went through a major refit this year This is a turn key boat ready to sail away
ALL NEW THIS YEAR Bottom job Flares EPIRB AIS Stainless 12v horn Running rigging 22lb stainless plow anchor 20’ chain/150’ rode Bimini 400 watts of Solar Renogy battery monitor Led navigation lights Cockpit line organizers Inclinometer Dinghy and 2020 2.5 mercury four stroke Four grey enterprises portlights 2 large windows VHF splitter Fresh water pump Jabsco head and all hoses Paint and countertop in the head Seperate shower bilge with its own pump Cabin sole 4 3/4”x30’ dock lines 8 1/2”x15’ dock lines All interior lights replaced with stainless LED units 3 fire extinguishers
ENGINE Control panel Kill cable Oil, air and fuel filter Fresh oil Zincs Thermostat Water pump/impeller
Recent survey valued at $24500 Asking $20000 or best offer
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)
Shoal draft: 4.0’/1.22m
Disp. (Shoal draft): 9900 lbs/4494 kg
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