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1974 Conyplex Contest 33

Listed
Expired
$18,000 USD

Seller's Description

PRICE REDUCED Chromis, a Dutch built Contest 33 is a fast, bulletproof and very seaworthly ocean sailing yacht designed for North Sea cruising rarely found in U.S. Very good performance with a beautiful and comfortable exotic wood interior. She is NOT a project boat or fixer upper. She is ready to motor out into Sarasota Bay, hoist the sails and go today or……stay in this very hard to find LIVEABOARD slip in Sarasota Florida for very reasonable cost* ask about slip availability.

**********solid, thick hand laid fiberglass hull and deck,no cores to rot.. glassed and screwed hull to deck joint.. New Volvo Penta NOS, bought new in original crate, just installed MD 11D diesel engine, fresh water cooled. Less than 20 hours on new engine. Brand new motor mounts, cutlass bearing, stuffing box, propeller shaft. No vibrations, no leaks. Beautiful interior made of exotic hardwoods, tons of storage. Hot and cold pressure water system, no leaks. Garmin chart plotter and radar, fully functional, Raymarine autopilot, depth sounder, brand new interior cushions, 90% new wiring in last several years including new mast wiring. Good quality full batten main sail with spare BRAND NEW full batten main sail in the bag, serviceable jib, storm sail and spinnaker and pole. Wind generator, Barlow 23 self tailing winches, Force 10 gas grill, solar panel, tools, spares, many more items. Custom, removable deck hatch air conditioner housing for use at slip. Many, many spares and parts purchased and not yet installed. *********Text or email only please.

Equipment: Volvo Penta NOS, new from crate, just installed MD 11D diesel engine 28hp, fresh water cooled. Less than 20 hours on NEW, not rebuilt, engine. New motor mounts, cutlass bearing, stuffing box, propeller shaft. No vibrations, no leaks. Beautiful interior made of exotic hardwoods, tons of storage, excellent Dutch craftmanship. Bulletproof hull with multiple layers of epoxy barrier coat, never a blister. Hot and cold pressure water system, no leaks. Garmin chart plotter and radar, fully functional, Raymarine autopilot, depth sounder, brand new interior cushions, 90% new wiring in last several years including mast wiring. Good quality full batten main sail with spare BRAND NEW full batten main sail in the bag, serviceable roller furling jib, storm sail and spinnaker ,pole. 2 anchor rode lockers, Barlow 23 self tailing winches, wind generator, solar panel, Force 10 gas grill, tools, many spares and much more. Custom, removable air conditioner housing for use at slip. Many, many spares and parts included.

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Specs

Designers
?
Builders
?
Associations
?
# Built
?
Hull
Monohull
Keel
?
Rudder
?
Construction
?

Dimensions

Length Overall
33 0 / 10.1 m
Waterline Length
?
Beam
10 0 / 3.1 m
Draft
4 5 / 1.4 m
Displacement
?
Ballast
?

Rig and Sails

Type
?
Reported Sail Area
?
Total Sail Area
?
Mainsail
Sail Area
?
P
?
E
?
Air Draft
?
Foresail
Sail Area
?
I
?
J
?
Forestay Length
?

Auxilary Power

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

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?
Cabins
2

Calculations

Hull Speed
?

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

?
Classic formula: ?
Sail Area/Displacement
?

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.
?
<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
?

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
?
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
?

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
?
<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
?

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

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