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Good Karma is a 1989 Catalina 30 MKII Tall Rig (fin keel) currently located in Bradenton Florida. Numerous updates including new canvas, 16k BTU reverse-cycle air-conditioning and heat, batteries, charger, solar controller, cockpit lighting, windlass, dinghy 5hp Honda outboard and much more. Sustained minor damage during Hurricane Ian, which was recently professionally repaired along with a complete bottom job/paint and full hull side wet-sand compound and wax.
Equipment: Engine *Universal M-25XP (23hp) *Replaced water pump with Oberdorfer (Feb 2021) *Replaced prop shaft, new cutlas bearing, realigned engine and shaft (Feb 2021)
Electric *Garmin 741XS chartplotter *250-watt solar panel *Replaced shore power inlet and main a/c power line to panel (2020) *Replaced Catalina a/c breakers with BlueSea a/c panel (Sept 2021) *Replaced all battery wiring and fuses *Replaced 12V battery selector switch *Replaced steaming and deck light with led *Replaced four 6v flood (230ah) batteries (serves as start and house) (2020) *Replaced battery charger ProNautic 12-40P(2020) *Replaced solar controller EPEver DuoRacer (2020) *Wilson a/c cellular booster with external antenna *Installed 12V color changing LED cockpit lights and controller
Rigging *Replaced main and spinnaker halyards (Aug 2020) *Replaced topping lift (Aug 2020) *Replaced furler line (Aug 2020) *Replaced traveler bearings
Sails, Canvas, Cockpit *150 Genoa with new matching sun cover (sun cover replaced Aug 2020) *Custom mainsail cover (Aug 2020) *Custom Bimini, Dodger, Extension (Aug 2020) *Custom bow and salon hatch covers *Custom cabin top handrail covers *Custom winch covers *Custom cockpit cushion covers (Aug 2020) *Propane grill (Magma Cabo) with custom matching cover *Custom Lifesling cover *Custom lifeline cushion covers *New flag halyards *New fire extinguishers and flares
Ground Tackle *New windlass with wired remote and foot switches in chain locker, rocker switch in cockpit (Mar 2023) *New dock lines
Hull *Bottom paint (Mar 2023) *Compound and wax hull sides (Mar 2023) *Rebed chain plates and swim platform (2021)
Dinghy *Custom dinghy davits *Bris 11 inflatable with 4-stroke Honda outboard with custom dinghy cover
Interior *Aft-berth 10-inch queen memory foam mattress *A/c d/c cooler/refrigerator standalone (transfers with boat) (Mar 2021) *16k btu reverse cycle air-conditioner with remote *Replaced stereo (with Bluetooth)
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)
(1986-1991)
Among changes were ‘T’ cockpit, slightly different deck and liner, and different Engine options.
A wing keel version was available,(hull #500+) as was a tall rig.
Wing keel:
DRAFT: 1.17m/3.83’.
BALLAST: 4300lbs/1950kg
DISPLACEMENT: 10,300lbs/4672kg
TALL RIG:
I: 43.00’/13.11m
J: 13.16’/4.01m
P: 37.00’/11.28m
E: 12.00’/3.66m
Sail Area(100%): 504.94 ft2/46.91 m2
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