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1988 Catalina 34 LOA: 34.50 Beam: 11.75 Wing keel: 3.83 White hull with white/grey deck
3 Tempurpedic mattress topper for v-berth (2019) Foam mattress in aft cabin (2019) Dometic 18,000 BTU air conditioner / heat (vents in main cabin, v-berth & aft cabin) Dometic Refrigeration Microwave (2020) Solid surface countertops (2019) Round polished sink w/ pullout faucet (2020) 32 TV (2019) Teak &Holly floor 6 New port lenses (2019) Center hatch lens replaced (2019) Marine head (2020) Roller furling w/ 125% genoa w/ sunbrella Full batten main w/ cover Boomkicker (2019) Depth meter Raymarine ST60 wind (display head still needs installed) Dodger / Bimini with Fly (aquamarine sunbrella) Cockpit cushions (fabric matches interior fabric) New engine ignition switch (2020) New mast boot (2020) Teak cockpit table Stern rail seats Lewmar 46 self tailing genoa winches Bottom painted spring 2019 Universal diesel w/ triple blade prop New rudder
Note: Moving up, so slip is not available
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)
Total Catalina 34’s built: 1,438
Shoal draft: 4.67’.
1985-1986: Deck stepped mast; Universal 25 (21HP) diesel engine.
1987-1990: Changed to keel stepped mast; Universal 25XP (23 HP) engine.
1990-1991: Walk-through transom introduced; Universal M35 (30 HP).
The last Mark I models look very much like Mark IIs. (see CATALINA 34 MKII)
Wing keel: Draft = 3.83’.
Tall Rig:
I: 46.0’
J: 13.5’
P: 40.5’
E: 12.0’
Photo courtesy Adam Hunt.
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