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If you are in the market for a ready to enjoy cruiser, don’t miss the opportunity to see this clean and well equipped Catalina 320. This model is known for easy handling and great performance, especially in stiff breezes. With her wide beam, her large comfortable cockpit has plenty of room for your crew and the walk-through transom gives easy access to the swim platform for in water activities or loading from the stern. Follow the stainless steel lifelines toward the bow and find easy passage to the fore deck with wide walkways and stainless steel handrails. Below decks you will find a very organized interior. The galley features a large and easy to access double refrigerated icebox, double stainless sink, gimballed stove/oven, and lots of storage. The private aft cabin has plenty of room to stretch out and offers ample storage and a changing seat. There is good access to the clean Perkins engine from both the main cabin and the aft cabin. Call today to make an appointment to see this popular Catalina model before she is gone!
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)
Draft for winged keel vers: 1.3m/4.25’
Updated MARK II version introduced in 1999.
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