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Seller's Description

1987 S2 9.1 Special Edition for sale. This boat is hull #117 and one of only a handful of special editions that S2 made. The special edition boat came with a vacuum bagged hull and an alternate interior layout, reducing weight by 400 pounds while adding a 9” taller rig.

This particular S2 9.1 SE has been set up well for beercan racing as well as port to port racing. The boat has accommodations for 8 sailors. She has undergone the first round of core replacement in the decks in 2016/2017. There are currently two small spots that will need to be done soon. One is under the port side halyard organizer blocks (currently plywood here, but leaks in heavy rain), and the other spot is under starboard side jib turning block (this location is also plywood, no evidence of water infiltration, but the block is deflecting under load). There is a removable foam cored v berth for extra sleeping arrangements but typically this area is left open as the sail locker. There are two foam and fiberglass coffin berths that were installed last winter. These can be easily removed if the new owner desires to change the layout. When I purchased the boat it had been converted from an outboard boat to an inboard boat very early on in the life of the boat. She had a single cylinder farymann 7.1 horsepower diesel. I had experienced tremendous vibration from the drivetrain. I started with the low hanging fruit and had the prop shaft trued, then I went to a new martec folding propeller in 2017. Finally giving in that the vibration was the motor itself, in 2019 the engine was replaced with a rebuilt 1992 yanmar 2qm15. During the engine replacement the parts bills started to spiral, it was discovered to have the wrong stuffing box(2” hose clamped around a 1.5” stuffing box) so this was replaced. The control cables were not long enough to reach the new locations, they were replaced. The throttle control itself was damaged while trying to change the cables, that was replaced. The muffler was too small for the new engine, that was replaced. Motor mounts, them too. ETC. ETC.

Equipment: Now for the fun stuff, the sailing. This boat was set up to be competitive with the more modern boats that are joining my fleet. I have focused on making the boat a competitive racer. This means lines, hardware, and sails. The amount of money spent on new gear is more than the boat is worth. I have purchased a “modern” sport cruiser and would like to take most of my upgrades with me, however, I am willing to let the go with the S2 for half price. If you see a price next to piece of equipment it is above the cost of the boat.

Sails: Older carbon main(from previous owner that I don’t think knew he had a special edition so main is 9” too short) Older symmetric runner Older symmetric reacher 2017 Carbon triradial main 2017 Dacron blade 100 w/battens in sausage bag 2018 Carbon double teffetta triradial #2 140 in sausage bag 2018 Asymmetric runner in snuffer- $800 2019 Carbon laminate #1 155 traditional sail bag 2019 Code Zero- $700

Deck hardware Standard: 1987 harken 44 self tailing winches, 1998 harken infinitely adjustable 4:1 jib cars,1987 harken traveler 4:1,1987 harken 6:1 main sheet system Option: 2018 Harken g274B - $420 2018 Harken 3176 windward sheeting car $500 2018 Harken 383 4:1/8:1 gross/fine tune $350 2018 Harken 46 self tailing radial winches $1,700 2019 seldon 75mm bow sprit set for 2’ extension with all fittings $625 The rest of the deck hardware is various ages but all is in good working condition.

Running rigging: Main halyard (oldest line on the boat but still in great condition) Jib primary 2018 dyneema core Jib secondary 2018 dyneema core Spinnaker halyard 2015 dyneema core Jib sheets 2018 dyneema Spinnaker sheets 2019 staset Main sheet 2018 staset Traveller and jib car adjusters 2017 Back stay 2018

Electronics: Raymarine tridata Raymarine wind Raymarine compass St 2000 tiller pilot Extra displays not installed but all wiring and equipment included. Repeaters for Wind, speed, and depth. Hardwired vhf radio with antenna on mast head Cd Bluetooth am/fm radio with speakers below and in cockpit. Remote control inc. Cabin lights with red/white One battery 2019 one 2016 Electric bilge pump 12v cigarette lighter outlet

Life safety: 4 Coast guard approved life jackets 6 dock lines 4 fenders 1 anchor with chain and rhode 1 life sling 2018 1 fire extinguisher Soft wooden plugs tied to each seacock

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Specs

Designer
Graham & Schlageter
Builder
S2 Yachts
Associations
?
# Built
?
Hull
Monohull
Keel
Fin
Rudder
Transom hung
Construction
FG

Dimensions

Length Overall
29 9 / 9.1 m
Waterline Length
98 5 / 30 m
Beam
34 5 / 10.5 m
Draft
18 0 / 5.5 m
Displacement
7,600 lb / 3,447 kg
Ballast
?

Rig and Sails

Type
Sloop
Reported Sail Area
504′² / 46.8 m²
Total Sail Area
504′² / 46.8 m²
Mainsail
Sail Area
252′² / 23.4 m²
P
35 11 / 11 m
E
14 0 / 4.3 m
Air Draft
?
Foresail
Sail Area
252′² / 23.4 m²
I
41 11 / 12.8 m
J
12 0 / 3.7 m
Forestay Length
43 8 / 13.3 m

Auxilary Power

Make
?
Model
?
HP
?
Fuel Type
?
Fuel Capacity
?
Engine Hours
?

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?
Cabins
1

Calculations

Hull Speed
8.1 kn
Classic: 6.81 kn

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

8.12 knots
Classic formula: 6.81 knots
Sail Area/Displacement
20.9
>20: high performance

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.
20.86
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
?

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

?
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
197.1
100-200: light

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
197.08
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
18.8
<20: lightweight racing boat

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
18.84
<20: lightweight racing boat
20-30: coastal cruiser
30-40: moderate bluewater cruising boat
40-50: heavy bluewater boat
>50: extremely heavy bluewater boat
Capsize Screening
2.1
>2.0: better suited for coastal cruising

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
2.14
<2: better suited for ocean passages
>2: better suited for coastal cruising

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