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Fatty Knees Dinghy 8 ft., 1984 and Seitech Beach Launching Dolly Located an hour north of Green Bay Wisconsin in the southernmost part of the U.P. of Michigan
For Sale 8’ Fatty Knees Dinghy $495.00
With or without seitech beach dolly additional $495.00 for the dolly
1984 model designed by Lyle Hess
Very solid, all wood in very good shape Exterior has been brush painted and looks ok Two rowing stations Small pad on tramsom for outboard motor (none included)
Just the boat, nothing else included No oars No sailing rig or sail Bill of sale only, no title for either the boat or the dolly
Seitech Dolly is the largest one they sell, massive overkill for the fatty knees dinghy
Dolly is in like new condition I bought it new and then sold the boat it was intended for. Stored indoors.
If you want the dolly, it’s 495 If you want the dinghy it’s also 495. If you want the two together it’s 990
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)
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