Force 5 AMF, 1983 sailboat for sale Price $1100
13’10” Force 5, 1983 with Galvanized Trailer Smithfield, Virginia
Great Single Handed Force 5 sailboat and galvanized trailer.Length Over All (LOA) 13’10” Beam 4’10” Displacement 145 pounds Sail Area (Standard Rig) 91 square feet Draft 3” board up 3’2” board down
Like a Laser but with all the go fast controls like Boom vang, center traveler, downhaul, outhaul and more sail area.
All lines have jam cleats for ease of handling. An easy boat to sail and very exciting on a full plane. Newer sail used 2 seasons. or phone 757 284-seven-three-five-three
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 √LWLA 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)
The FORCE 5 was designed in 1972 by Fred Scott and Jack Evans of AMF Alcort. By 1974 it was their second best selling boat. Over 12,000 boats were built up until 1989 when AMF Alcort changed hands several times in a short period of time. In 1993, Weeks Yacht Yard became the new builders of the FORCE 5.
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