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Norwalk Island Sharpies were designed by Bruce Kirby of Laser fame. He thought of them as a laser for grown-ups. They certainly deliver.
I have owned this NIS 23 for the past 4 years and am sad to sell as I am moving across the country to California.
This boat has been featured twice in Small Boat Magazine, a publication of Wooden Boat Magazine. She was first highlighted in the May 2021 issue for a nine day voyage along the north Gulf Coast where she thrived in 30 kts of wind, and reached 10.7 knots on a thrilling broad reach at 5am. The boat was then reviewed in the July 2022 issue. I can facilitate access to these articles on request.
As you will read, I have pushed this boat very hard and she delivers. She holds her own in high winds and a tight chop. Her flat bottom and centerboard permit access to shallow marsh creeks and easy beaching. Her unique cat ketch rig is flexible, and even allows for sailing into the dock. The cabin is suitable for overnight trips for two in camp cruising style.
There is no rot in the boat.
She is currently in a wet slip with a bone dry bilge at Bucktown Marina in New Orleans, LA.
The carbon fiber masts are lightweight and can be stepped by two people without too much hassle.
She has a 6hp Yamaha with about 30 hours on it.
She comes with a single axle trailer and a spare tire.
Equipment: Two suits of sails in good condition (one tanbark and one white) Two Danforth anchors Lighted compass VHF radio Cabin lights Custom cushions for forward v-berth
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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