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Solid fresh water boat in excellent condition. Very popular one design by Graham & Schlageter built by S2 Yachts in Holland, MI. Over 545 boats built, but a select few (17) were delivered with a fixed keel and masthead rig.
LOA 2511 LWL 218 Beam 9 Draft 5 (Fixed Keel) Displacement 4,000 lbs. Sail Area 329 sq. ft. https://sailboatdata.com/sailboat/s2-79-fk/
All new rigging from Charleston Yacht Rigging in 2019. Shrouds & forestay, compacted strand. Spectra backstay with flicker and upgraded purchase. Facnor low profile roller furling system, with aluminum dual track head foil. Also have spare single track plastic head foil. Mast reconditioned and properly painted in 2019.
Solid, firm deck with no soft/wet spots. Balsa core wet areas removed and replaced with koosa, and properly re-glassed with tri-layer glass. Bottom faired and coated w/Interlux VC17. All deck hardware removed and expoxied cored. Winches (both primary and secondary), cleats, fairleads, all feature underdeck backing plates for additional strength.
Sail inventory: Sobstad Mylar 155%, Dacron Main, Dacron Doyle 100%, and Spinnaker.
Trailer: Custom built steel trailer with dual axles.
Instruments: Dual Suunto Marine Compasses mounted on bulkhead. Speed and Depth on bulkhead.
https://sailboatdata.com/sailboat/s2-79-fk/
Equipment: Other Equipment: Tahatsu 6 hp Outboard motor runs great. Self-tailing secondary winch Upgraded companion way hatch (clear poly) New mainsheet cleat and block New Lewmar dual cam sheet cleats Two spinnaker poles Stern swim ladder Loos rig tension gauge Spare docks lines Extra blocks Fenders x 4 Outboard Motor mount (rise/fall adjustable) Factory interior cushions in great shape New custom cockpit cushions LED bow, stern, and mast head light New interior reading lights and led lights for center trunk shelving Freshly painted and faired interior
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)
A somewhat rare variant of the S2 7.9 with a fixed keel and masthead rig.
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