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1986 S2 6.9 Grand Slam
with 4 HP Yamaha 4 Stroke and Trailer
Hull #173 of 174 built by S2
North Sails Main & 3 Headsails - 100% Dacron, 150% Telfa (light air), 150% Kevlar (heavy air)
Clean, Well Maintained Boat with Excellent Equipment
Fast and Comfortable
Equipment: ACCOMMODATIONS:
V Berth sleeps 2 with 6.5 foot berth Two Quarter Berths port and starboard Porta Potti Built in Ice Box Full Set of Interior Cushions in good condition Large Storage Area behind companionway steps
SAILS/RIGGING:
Loose Footed North Sails Mainsail with slugs for Cruising 3 Jibs - 100% Dacron, 150% Telfa (light), 150% Kevlar (heavy) - All North Sails 2 Half Ounce North Spinnakers - 1 brand new - never used 2 Sail covers - 1 new on 2018 Multiple tillers - racing, cruising Telescoping Hiking Stick Running Rigging 3 years old
ELECTRICAL:
All Lighting Up-graded (interior and exterior) to LED Voltmeter Display, 12 volt outlet, USB plug Solar Panel and mounts 2018 Garman 9 Chart Plotter includes depth and speed with removable mounting system and through hull transducer (no hull penetration) 12 volt Gel Cell Battery
TRAILER:
Single Axle with Bearing Buddies - 2 inch ball New tires in 2016 All new wiring 2017 New Bow Winch 2017
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)
S2 6.9 GRAND SLAM.
The same hull as the S2 6.7 (designed by S2 in-house designer Don Wennersten), with changes to the cabin, cockpit, and sailplan overseen by G&S.
(Thanks to Bob Proctor for providing updated information on this yacht.)
This listing is presented by SailboatListings.com. Visit their website for more information or to contact the seller.
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