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  • Sailboat Guide

Contest 28 is a 27 ′ 11 ″ / 8.5 m monohull sailboat designed by Dick Zaal and built by Contest Yachts - Conyplex between 1976 and 1981.

Drawing of Contest 28

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)

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  • About Sailboat Guide

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The Contest 28 is a 27.92ft masthead sloop designed by Dick Zaal and built in fiberglass by Contest Yachts - Conyplex between 1976 and 1981.

20 units have been built..

The Contest 28 is a moderate weight sailboat which is a high performer. It is very stable / stiff and has a low righting capability if capsized. It is best suited as a fast cruiser. The fuel capacity is originally small. There is a very short water supply range.

Contest 28 sailboat under sail

Contest 28 for sale elsewhere on the web:

segelboot contest 28

Main features

Model Contest 28
Length 27.92 ft
Beam 9.33 ft
Draft 5.33 ft
Country The Nederlands (Europe)
Estimated price $ 0 ??

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Sail area / displ. 20.98
Ballast / displ. 47.14 %
Displ. / length 244.54
Comfort ratio 20.24
Capsize 2.04
Hull type Monohull fin keel with rudder on skeg
Construction Fiberglass
Waterline length 22.42 ft
Maximum draft 5.33 ft
Displacement 6173 lbs
Ballast 2910 lbs
Hull speed 6.34 knots

segelboot contest 28

We help you build your own hydraulic steering system - Lecomble & Schmitt

Rigging Masthead Sloop
Sail area (100%) 440 sq.ft
Air draft 0 ft ??
Sail area fore 0 sq.ft ??
Sail area main 0 sq.ft ??
I 0 ft ??
J 0 ft ??
P 0 ft ??
E 0 ft ??
Nb engines 1
Total power 0 HP
Fuel capacity 20 gals

Accommodations

Water capacity 32 gals
Headroom 0 ft
Nb of cabins 0
Nb of berths 0
Nb heads 0

Builder data

Builder Contest Yachts - Conyplex
Designer Dick Zaal
First built 1976
Last built 1981
Number built 20

Other photos

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Sales information

  • De Valk Hindeloopen The Netherlands
  • +31 514 52 40 00
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Broker's comments.

Very well maintained Classic Sailing yacht Contest 28 "Neverthought" was build in 1978 by the very well known Conyplex builders in Medemblik. Safe, reliable, stable and yet very comfortable. With it’s minimum draft there are also a lot of possibilities in shallow waters .

  8,40 x 2,80 x 1,45 (m)
  grp
  1978
  1 x Volvo Penta MD 7A Diesel
  13 (hp), 9,56 (kw)
  contact Hindeloopen
  De Valk Hindeloopen
  sold
   

General - CONTEST 28

Beautifully presented 1978 Contest 28, with fin keel, tiller steering, slab reefing mainsail and furling Genoa, build number 92, dimensions.: 8.40 (length water line 6.85) x 2.85 x 1.45 m, design by Dick Zaal, built by Conyplex Netherlands, roundbilged hull, rudder in full skeg, displacement: 2.9 tons, ballast: 1.5 tons, fueltank: 80 liters, freshwater tank: 140 liters,

Accommodation

Classic mahogany interior, 1 cabin and saloon , 6 berths, headroom approx 1,85, 1 manual toilet, Webasto factory fitted cabin heating, electric water system in galley, 2 burner gasstove, Waeco refrigerator (2006), crockery. Saloon table.

Volvo penta, 13hp Diesel engine, well maintained, direct cooling system, consumption approximately. 1,5 ltr/hr, cruisingspeed approx. 6 knots, two bladed fixed propeller, shaft driven : Stainless steel Diesel fuel tanks(liter): 80 liter witch gives it an 400nm range, Vetus flexible watertank 140 liter (2010 ), 12v electrical system, 2x 100/amp batteries ('95 Automatic 25 Amp Battery charger (2007

VDO Compass, VDO log, VDO wind speed meter , fixed VHF, Mobile Cobra VHF (2010) , navigation lightning, Clipper depthgage (2006).

Tiller steering new upholstery with new mattresses in front, sea railing with safety net, anchor and line, barometer, radar reflector, fenders, warps, isolated backstay, etc. Underwater ship protected by International shield. Spray hood and attachable Cockpit tent for extra room. Alpine radio cd System with two loud speakers, 6 Cockpit cushions. Fortress anchor with 50 m line ,2 fire extinguishers.

Sloop-rigged, aluminum mast, s.s. standing rigging, Baby stay, Tradional mainsail, Furlex furling Genoa system, Genoa I/Genoa II/jib/storm jib/spinnaker, stormjib to be used on headsailfurler, sail cover for main, spinnaker, with spinnaker boom, Genoa cover, 2 x sheet, 2 x spinnaker winches. Mastlength 11,80 ( Hollandsebrug proof ).

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Review of Contest 28

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 boat is equipped with 120.0 liter fresh water capacity.

The Contest 28 is equipped with a masthead rig. The advantage of a masthead rig is its simplicity and the fact that a given sail area - compared with a fractional rig - can be carried lower and thus with less heeling moment.

The Contest 28 is equipped with a fin keel. A boat with a fin keel is more manoeuvrable but has less directional stability than a similar boat with a full keel.

The boat can enter most marinas as the draft is just about 1.62 - 1.72 meter (5.31 - 5.61 ft) dependent on 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 Capsize Screening Formula (CSF)?

The capsize screening value for Contest 28 is 2.03, indicating that this boat would not be accepted to participate in ocean races.

What is Theoretical Maximum Hull Speed?

The theoretical maximal speed of a displacement boat of this length is 6.3 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 Contest 28 is about 129 kg/cm, alternatively 727 lbs/inch. Meaning: if you load 129 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 727 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 Motion Comfort Ratio (MCR)?

What is L/B (Length Beam Ratio)?

What is a Ballast Ratio?

What is Displacement Length Ratio?

SA/D (Sail Area Displacement ratio) Indicates how fast the boat is in light wind: - Cruising Boats have ratios 10-15 - Cruiser-Racers have ratios 16-20 - Racers have ratios above 20 - High-Performance Racers have ratios above 24 Sail-area/displacement ratio (SA/D ratio): 20.92

Maintenance

When buying anti-fouling bottom paint, it's nice to know how much to buy. The surface of the wet bottom is about 23m 2 (247 ft 2 ). Based on this, your favourite maritime shop can tell you the quantity you need.

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.

UsageLengthDiameter
Jib sheet 8.5 m(27.9 feet)10 mm(3/8 inch)
Genoa sheet8.5 m(27.9 feet)10 mm(3/8 inch)
Mainsheet 21.3 m(69.8 feet)10 mm(3/8 inch)
Spinnaker sheet18.7 m(61.4 feet)10 mm(3/8 inch)

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Build year:  1980

Sneek, the netherlands, sailing boat for sale.

Contest 28 Sailing boat 1980, with Volvo Penta engine, The Netherlands

  • Scheepsmakelaardij Goliath
  • Hendrik Bulthuisweg 2
  • NL 8606 KB Sneek
  • The Netherlands
  • +31 515560410

Description

Contest 28AccommodationMaterial, colours: vegetationEngine, electrics, waterDynamo: by motorbikeRig and sailsGenoa: Genoa 1 and Genoa 2Gennaker: sails are goodNumber of masts: ketch

Contest 28IndkvarteringMateriale, farver: grønMotor, elektricitet, vandDynamo: på motorenSejludstyrGenua: Genua 1 og Genua 2Gennaker: sejlene er i god standAntal master: ketch

Contest 28BoendeMaterial, färger: grönMotor, el, vattenDynamo: på motorRiggGenua: Genua 1 och Genua 2Gennaker: segel är i gott skickAntal master: ketch

Contest 28AccommodatieMateriaal, kleuren: groenMotor, electra, waterDynamo: op motorTuigageGenua: Genua 1 en Genua 2Gennaker: zeilen zijn goedAantal masten: ketch

Wettbewerb 28InnenausstattungMaterial, Farben: VegetationMotor, Elektrik, WasserLichtmaschine: mit dem MotorradBesegelung & RiggGenua: Genua 1 und Genua 2Gennaker: Segel sind gutAnzahl Masten: ketch

Materiale / unit

Motor & technic.

Volvo Penta

Total power

Engine count

Engine place

Contact seller

Crusing speed

Contest Yachts

Contest Yachts is a Dutch yacht builder that specializes in the manufacture of high-quality sailing yachts. The company was founded in 1965 and has since built a reputation for building yachts that are both fast and comfortable to sail. They have a wide range of models, including cruisers, racers, and performance cruisers. They are well-known for their craftsmanship and attention to detail.

Sellers boats

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sleepboot 17.36 Motor boat 1927, with DAF / Leyland engine, The Netherlands

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Contest 28

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Contest 28 - Conyplex / STW000765

segelboot contest 28

cabin cruiser

Volvo Penta MD 7A 13 pk

overall length

hull length

waterline length

standard draft

minimum draft

displacement

diesel tank

mast height

Accomodation layouts

standard version

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COMMENTS

  1. CONTEST 28 - sailboatdata

    The LWL will increase as the yacht sinks into the water with the added weight of stores and equipment. BEAM: This is the greatest width of the hull and is often expressed as Beam (Max). Beam WL: Greatest width of the hull at the waterline.

  2. Contest 28 | Contest Yachts

    Contest 49CS & 50CS update. Contest Yachts goes all-electric with Torqeedo. Contest Yachts expands distributors network into Far East. Contest 49CS & 50CS world premiere boot Düsseldorf. Torqeedo joins Contest Yachts on stand at Düsseldorf Show. BOOT Dusseldorf 2023. Register now for Sevenstar Contest Cup 2023.

  3. Contest 28 - Sailboat Guide

    Contest 28 is a 27 ′ 11 ″ / 8.5 m monohull sailboat designed by Dick Zaal and built by Contest Yachts - Conyplex between 1976 and 1981.

  4. Contest 28 - sailboat data sheet

    The Contest 28 is a 27.92ft masthead sloop designed by Dick Zaal and built in fiberglass by Contest Yachts - Conyplex between 1976 and 1981. 20 units have been built. The Contest 28 is a moderate weight sailboat which is a high performer.

  5. Contest 28

    Contest 28. Fast seaworthy Cruiser. Very modern designed by D in accordance With the I. OR V. ry good performance. A comfortable interior with 5 berths. Two keel versions: 1,40 m or m (SC). 28 TECHNICAL DATES: Masthcight Disp Ballast . T.MF. Water 145 L / 32 Gasoil gallons Type B: .

  6. CONTEST 28 sailing yacht for sale | De Valk Yacht broker

    CONTEST 28 for sale | Built by: Conyplex | Built: 1978 | Dimensions: 8,40x2,80x1,45m | Material: GRP | 1x Volvo Penta MD 7A Diesel.

  7. Review of Contest 28 - www.yachtdatabase.com

    The Contest 28 is a sailboat designed by the Dutch maritime architect Dick Zaal in the mid seventies. A few hundred boats have been produced. The Contest 28 is built by the Dutch yard Conyplex N.V..

  8. Contest 28 | Sailing boat for sale | The Netherlands - Scanboat

    Contest 28. Build year: 1980. Sneek, The Netherlands. Sailing boat for sale. More photos. Videos. 5,950 EUR. Scheepsmakelaardij Goliath. Hendrik Bulthuisweg 2. NL 8606 KB Sneek. The Netherlands. +31 515560410. Quick Contact, log in Send email. Sellers website Sellers boats. Description.

  9. Contest 28 : STW000765 : the SailingTheWeb sailboat datasheet

    The Contest 28 produced by the builder Conyplex and designed by Dick Zaal, is a cabin cruiser for cruise, rigged Sloop.

  10. Contest Yachts | Building dreams together

    Our focus is on craft equally comfortable cruising creeks or crossing oceans and our owners take this philosophy to heart as they sail the world. Our range currently comprises nine sailing yachts from 42-85ft (13-26m) and four versions of our beautiful motor cruiser, the 16m Contest 52MC.