Seller's Description
Viewings this weekend Oct.23 & 24th in Rhode Island, check out our website for more info, photos, equipment list and walkthrough video: www.sykognita.com
Built for the rugged waters off California, this beautiful blue-water boat is ready for her next adventure! Kognita just sailed 8,400 miles from California through the Panama Canal to Rhode Island. No one ever believes she was built in 1973, she is a true modern classic! Lots of light, very spacious, and a beast in the ocean. She tracks well sailing thanks to her 3/4 length cutaway keel and attached rudder. Completely set-up for short-handed world-cruising, she holds 110-gallons of fuel, 80-gallons of water, has 370-watt solar panel and a 900-amp hour gel battery bank, 12V Spectra water-maker and a Monitor wind-vane. Shes solid, well-equipped, and gorgeous.
Purchased in 2017 by her current owners, Kognita underwent a 3-year professional refit including new awl-grip paint on decks, hull and mast, new North sails, new wire standing rigging, new rudder, fully re-wired, fully re-plumbed, new removable headliners with recessed lighting, new layer of epoxied fiberglass over the entire hull with 5 layers of epoxy barrier coat, new roller fuller staysail with self-tacking track, new cockpit cushions and lots more!
Shes currently in East Greenwhich, Rhode Island and is ready to set sail to the Caribbean and beyond! She is already measured/registered with the Panama Canal Authority and would be excited to make it to the South Pacific ( thats what her original plan was, damn covid!).
LOA: 40 ft Draft: 6ft Beam: 12.9ft Hull material: Fiberglass ( 1” thick) Keel shape: 3/4 length cutaway keel with attached rudder Cabins : 2 double berths main salon table drops down and creates another double berth Head : 1 Engine: 50 hp Kubuta marinized by Phasor Engine Hours: 1800
Total refit from 2017-2020, pretty much all new!
Equipment: Full equipment list can be found here:
www.sykognita.com/equipment
-3-year professional refit from 2017-2020
-2020 survey
-Sailed 8,400 nautical miles
-100 gallons of fuel / 80 gallons of fresh water
-New North Sails main & jib 2019
-370-watt solar
-12V Spectra watermaker (12-15 gallon/hr)
-900 amp/hour gel battery bank
-Monitor windvane
-10ft Hypalon Achilles inflatable with aluminum floor and 9.8 Tohatsu Engine
Fully loaded and ready to cruise, all equipment can be found here:
https://www.sykognita.com/equipment
Specs
- Designers
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- Builders
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- Associations
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- # Built
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- Hull
- Monohull
- Keel
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- Rudder
- ?
- Construction
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Dimensions
- Length Overall
- 39′ 11″ / 12.2 m
- Waterline Length
- ?
- Beam
- 12′ 7″ / 3.8 m
- Draft
- 6′ 0″ / 1.8 m
- Displacement
- ?
- Ballast
- ?
Rig and Sails
- Type
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- Reported Sail Area
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- Total Sail Area
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Mainsail
- Sail Area
- ?
- P
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- E
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- Air Draft
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Foresail
- Sail Area
- ?
- I
- ?
- J
- ?
- Forestay Length
- ?
Auxilary Power
- Make
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- Model
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- HP
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- Fuel Type
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- Fuel Capacity
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- Engine Hours
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Accomodations
- Water Capacity
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- Holding Tank Capacity
- ?
- Headroom
- ?
- Cabins
- 2
Calculations
- Hull Speed
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Hull Speed
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.
Formula
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
- Sail Area/Displacement
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Sail Area / Displacement Ratio
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.
Formula
SA/D = SA ÷ (D ÷ 64)2/3
- SA: Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
- D: Displacement in pounds.
- Ballast/Displacement
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Ballast / Displacement Ratio
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.
Formula
Ballast / Displacement * 100
- Displacement/Length
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Displacement / Length Ratio
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.
Formula
D/L = (D ÷ 2240) ÷ (0.01 x LWL)³
- D: Displacement of the boat in pounds.
- LWL: Waterline length in feet
- Comfort Ratio
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Comfort Ratio
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.
Formula
Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam1.33)
- D: Displacement of the boat in pounds
- LWL: Waterline length in feet
- LOA: Length overall in feet
- Beam: Width of boat at the widest point in feet
- Capsize Screening
- ?
Capsize Screening Formula
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.
Formula
CSV = Beam ÷ ³√(D / 64)
- Beam: Width of boat at the widest point in feet
- D: Displacement of the boat in pounds
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