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1992 Ron Holland 55 From architect RON HOLLAND in collaboration with RIC TABARLY. ANDREW WINCH, recognized for his woodworking, participated in the interior finishing.
Unique and meticulously maintained sailboat (in fresh water only since refit in 2003, 5 months a year) with a fine interior finish with curved insulated bulkheads, giving a particular tone to the structure. In addition to the build in insulated hull for the submerged part, many additions and improvements have been made:
Stainless steel rudder with drain - 2017; Aluminum arch with “powder coating”; Awlgrip paint redone on hull, painted deck parts and spars; Bow thruster replaced in 2019; Leather interior; Water and air cooled refrigerator (usable in dry dock); Two heat pumps The forward cabin can easily be modified to make a 4th bedroom in addition to the skipper’s cabin which now serves as sails compartment.
Definitely to see!
Equipment: Electrical Equipment S Shore Power Inlet Generator ONAN / 6.5MDKOP IC / 6.5Kw / Diesel 120 Volts CA / 240 Volts CA Inverter 375W
Electronics Depthsounder Radar Log-Speedometer Wind Speed and Direction Repeater(s) TV Set DVD Player Autopilot Radio Compas GPS VHF Inside Equipment
Bow Thruster 2019 Electric Bilge Pump Oven Manual Bilge Pump Marine Head 2 Air Conditioning Heating 8000w Hot Water Refrigerator Deep Freezer Battery Charger Charles 50Amps
Outside Equipment Teak Cockpit Cockpit Shower Teak Sidedecks Davit(s) Radar Reflector Cockpit Cushions Cockpit Table Swimming Ladder Additional Equipment Launching Trailer
Rigging Steering Wheel Double Spinnaker Pole Barbarossa
Sails Fully Battened Mainsail 2016 Storm Jib Dacron - 60% Cruising Spinnaker Nylon 1.5 Oz Furling Genoa Dacron - 110% And #3 Genoa - 2004
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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