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Ready for coastal cruising or club racing, this nice 315 features a furling main, newer genoa, and a lightly used asymmetrical spinnaker on a Code X furler for easy use even when light handed. The comfortable cockpit with custom cushions and a folding leaf table, has plenty of room for crew. The walkthrough transom provides stern boarding access when backed into the slip and access to the swim platform and telescoping boarding ladder when it is time to cool off. Down below, the interior is bright and airy with opening hatches and portlights with screens for great ventilation. The private forward and aft staterooms both sleep 2 on custom innerspring mattresses and feature shelf and cabinet storage. Additional sleeping opportunities are found in the salon with a convertible dinette and starboard settee. The U- shaped galley includes a front-loading refrigerator, ice box, stainless sink, and microwave. Swift has been hauled every Winter and has received a fresh coat of bottom paint every Spring. The Yanmar 21hp diesel has been maintained by the dealer and is ready for reliable cruising. See the full list of features below and call for an appointment to view this Catalina in person.
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)
Shallow draft (wing keel): 1.32m/4.33’.
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