s2 6.7 sailboat review

Review of S2 6.7

Basic specs..

The hull is made of fibreglass. Generally, a hull made of fibreglass requires only a minimum of maintenance during the sailing season. And outside the sailing season, just bottom cleaning and perhaps anti-fouling painting once a year - a few hours of work, that's all.

The S2 6.7 is equipped with a fractional rig. A fractional rig has smaller headsails which make tacking easier, which is an advantage for cruisers and racers, of course. The downside is that having the wind from behind often requires a gennaker or a spinnaker for optimal speed.

The S2 6.7 has been built with different keel alternatives.

Unknown keel type

The boat can enter even shallow marinas as the draft is just about 1.28 - 1.38 meter (4.20 - 4.50 ft) dependent on the load. See immersion rate below.

DaggerBoard

The S2 6.7 is equipped with a daggerboard keel. A daggerboard is a lifting keel that can be lowered and raised, allowing the boat to enter shallow waters as well.

The boat can sail close to the beach as the draft is just 0.25 - 0.35 meter (0.82 - 1.12 ft) dependent of the load. See immersion rate below.

Sailing characteristics

This section covers widely used rules of thumb to describe the sailing characteristics. Please note that even though the calculations are correct, the interpretation of the results might not be valid for extreme boats.

What is Theoretical Maximum Hull Speed?

The theoretical maximal speed of a displacement boat of this length is 5.8 knots. The term "Theoretical Maximum Hull Speed" is widely used even though a boat can sail faster. The term shall be interpreted as above the theoretical speed a great additional power is necessary for a small gain in speed.

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for S2 6.7 is about 93 kg/cm, alternatively 521 lbs/inch. Meaning: if you load 93 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 521 lbs cargo on the boat it will sink 1 inch.

Sailing statistics

This section is statistical comparison with similar boats of the same category. The basis of the following statistical computations is our unique database with more than 26,000 different boat types and 350,000 data points.

What is L/B (Length Beam Ratio)?

Maintenance

When buying anti-fouling bottom paint, it's nice to know how much to buy. The surface of the wet bottom is about 16m 2 (172 ft 2 ). Based on this, your favourite maritime shop can tell you the quantity you need.

Are your sails worn out? You might find your next sail here: Sails for Sale

If you need to renew parts of your running rig and is not quite sure of the dimensions, you may find the estimates computed below useful.

This section is reserved boat owner's modifications, improvements, etc. Here you might find (or contribute with) inspiration for your boat.

Do you have changes/improvements you would like to share? Upload a photo and describe what you have done.

We are always looking for new photos. If you can contribute with photos for S2 6.7 it would be a great help.

If you have any comments to the review, improvement suggestions, or the like, feel free to contact us . Criticism helps us to improve.

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Purchasing a S2 6.7

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I am purchasing an S2 6.7 but am wondering how easy (or hard) it is to raise and lower the Dagger board when going into shallow water or when beaching the boat. Is the dagger board better than a fixed Keel? Would you consider a 1980 S2 "Old"? This boat has been very well taken care of. Thanks in advance, Bill van  

have you visited the s2 6.9 class association web site? may be able to find answers there. S2 6.7, 6.9 & 22 Class Association Web Site ! Rick P S2 27  

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• Sailboat Guide

S2 6.7 is a 22 ′ 0 ″ / 6.7 m monohull sailboat designed by Don Wennersten and built by S2 Yachts between 1980 and 1983.

• 1 / 3 Putney, VT, US 1980 S2 6.7 $4,000 USD View
• 2 / 3 Putney, VT, US 1980 S2 6.7 $4,000 USD View
• 3 / 3 Putney, VT, US 1980 S2 6.7 $4,000 USD View

Rig and Sails

Auxilary power, accomodations, calculations.

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

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL

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.

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 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.

Ballast / Displacement * 100

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.

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

• D: Displacement of the boat in pounds.
• LWL: Waterline length in feet

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.

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )

• D: Displacement of the boat in pounds
• LOA: Length overall in feet
• Beam: Width of boat at the widest point in feet

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.

CSV = Beam ÷ ³√(D / 64)

AKA S2 6.7 GRAND SLAM. Thanks to Bob Proctor for providing updated information for this yacht. A few boats were turned out with a fixed keel.(draft: 4.5’)

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spec's on a 26 foot S2

• Thread starter yomoma
• Start date Feb 8, 2010
• Brand-Specific Forums

Two 26 foot boats in 82 There is a 7.9, which is a racing design and an 8.0, which is a cruising design.  

Attachments

Re: Two 26 foot boats in 82 S2 YACHTS SAIL BOAT MODEL LINEUP CRUISING / DAY SAILING MODELS All S2 cruising sailboats featured a solid fiberglass hull, and a balsa cored deck, except for the 35C that had a balsa cored hull and deck. BOAT LOA PRODUCTION # BUILT 6.8 EXCITER 22'4" 80-80 150 7.0 23 23'0" 75-75 140 7.3 METER 23'10" 78-87 404 8.0 METER A 26'0" 75-75 40 8.0 METER B 26'0" 76-83 426 8.0 CENTER COCKPIT 26'0" 75-75 210 27 PERFORMANCE CRSR 26'7" 85-87 85 8.5 METER 28'0" 80-83 103 8.6 METER 28'0" 84-85 150 9.2 AFT COCKPIT 29'11" 77-87 520 9.2 CENTER COCKPIT 29'11 " 77-87 426 11.0 AFT COCKPIT 36'0" 77-87 156 11.0 CENTER COCKPIT 36'0" 80-87 66 35 CENTER COCKPIT(1)35'2" 86-87 35 RACING /ONE DESIGNS All the S2 Racing boats featured balsa cored hulls and decks. 5.5 GRAND SLAM 18'0" 82-83 70 6.7 GRAND SLAM(3) 22'0" 80-83 160 6.9 GRAND SLAM(3) 22'0" 83-86 174 22 WING KEEL(1) 22'0" 87-87 20 7.9 GRAND SLAM(2) 25'11" 82-87,90,94 545 9.1 METER(1) 29'10" 83-87 127 10.3 METER(1) 33'9" 82-87 45 (1) These boats featured bolt on external keels. (2) The 7.9 was also offered in a fixed keel version (17 boats), the rest had vertically retracting keel. (3) Only offered with vertically retracting keel.  

Re: Two 26 foot boats in 82 http://www.sailingsource.com/s279/pages/miscpgs/SPECS.HTM has specs for the 7.9  

Re: Two 26 foot boats in 82 Most rigging shops will know the dimensions you need. Be aware that sometimes boats, like the 8.0, came in an optional tall rig version. The easiest way to tell what you have is to run a tape measure up the main halyard. There is a lot of information available using the search function on the site too. http://www.mauriprosailing.com/techinfo/boatspecs/Rig S.htm lists most.  

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