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Catalina 30 Tall Rig, 1986, $20,000 C30 with M25 Diesel. Tall rig with fin keel. Diesel has just been flushed, cleaned & serviced. Fresh water boat. Boat is excellent in every way. 4 deep cycle Marine batteries, Pronautic12-20P dual battery maintenance system. All teak has been removed and refinished in the past 6 months except the handrails and bowsprit. Full set cockpit foam cushions. OEM stove was nonfunctional and removed. .Day cooler in its place. Boat was professionally serviced regularly prior to my acquisition 2 years ago. All new $6000 electrical panel 2 years ago. Mast was rewired same time New custom designed starboard swim platform with ladder. All new LED conversions throughout, with lighting added under compartments where there is normally poor visibility in dark spaces. New Edson Destroyer wheel, and steering pedestal rewired. A/C just serviced, with a new freshwater intake filter. New Dometic Refrigeration Unit November 2023 Dometic removable pressurized flush head, no pump out required. Nav station was rewired with New touch screen Navionics 9000 navigation system, new raymarine repeater station. and remote controls, new pedestal compass Oscillating Fans in Vee Berth and Head rebuilt 2022. Bluetooth stereo, usb charging ports inside & out. VHS radio with repeater station, and built in charging dock for portable VHF. TV and DVD player. Standard mahogany Fold away dining table mounted to wall. 2 mains, 3 furling genoas. 155 dacrons and 145 Mylar furling genoa. Dacron sails are all 8.5/10, very serviceable for cruising, Lazy Jack system added. Bottom is cleaned monthly, Bottom paint is smooth and excellent. no bad spots in the paint, one dime sized blister noted unchanged last 3 years. Topside in great condition, but has a few gelcoat chips commensurate with its service life. Full canvas covers for all hatches, with complete side curtain covers. Magna gas grill for the stern rail Boat is in the water in SC on Lake Murray. Deep water ramp locally available for removal, Experienced mover/rigger available.
Equipment: Full canvas, cushions, 5 sails(2 mains. 3 genoas) Full Bimini RAymarine/Navionics Autopilot with touchscreen installed 2023. VHS w remote, Portable VHS TV/DVD Bluetooth stereo/CD player. USB charging outlets inside & out. Complete NEW electrical panel replaced 2021 All new LED lighting. Air conditioning, New refrigerator Magna gas grill Stern swim planform with ladder.
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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