Detailed sailboat specifications and datasheets since 2015
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Contest 250C

Sailboat specifications

The Contest 250C is a 24’7” (7.5m) cruising sailboat designed by Jac de Ridder Yacht Design (Netherlands). She was built between 1982 and 1985 by Conyplex (Netherlands).

Contest 250C's main features

Model
Contest 250C
Hull type
Monohull
Category
Coastal cruising sailboat
Sailboat builder
Sailboat designer
Sailboat range
Country
Netherlands
Construction
GRP (glass reinforced polyester):
- Hull: Single skin fiberglass polyester
- Deck: Sandwich balsa fiberglass polyester
First built hull
1982
Last built hull
1985
Appendages
Keel : fin without bulb
Helm
Single tiller
Rudder
Single transom hung rudder
Unsinkable
No
Trailerable
No
Standard public price ex. VAT (indicative only)
N/A

Contest 250C's main dimensions

Overall length
24’ 7”7.5 m
Hull length
24’ 7”7.5 m
Waterline length
20’ 6”6.25 m
Beam (width)
9’2.75 m
Draft
4’ 11”1.5 m
Light displacement (MLC)
3858 lb1750 kg
Ballast weight
1510 lb685 kg
Ballast type
Cast iron

Contest 250C's rig and sails

Upwind sail area
369 ft²34.3 m²
Downwind sail area
590 ft²54.8 m²
Mainsail area
170 ft²15.8 m²
Genoa area
199 ft²18.5 m²
Jib area
136 ft²12.6 m²
Symmetric spinnaker area
420 ft²39 m²
Rigging type
Sloop Marconi 7/8
Mast configuration
Deck stepped mast
Rotating spars
No
Number of levels of spreaders
1
Spreaders angle
No spreader
Spars construction
Aluminum spars
Standing rigging
1x19 strand wire continuous

Contest 250C's performances

Upwind sail area to displacement
 iThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds.

The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size.

Upwind: under 18 the ratio indicates a cruise oriented sailboat with limited performances especially in light wind, while over 25 it indicates a fast sailboat.
254 ft²/T23.62 m²/T
Downwind sail area to displacement
 iThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds.

The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size.
406 ft²/T37.74 m²/T
Displacement-length ratio (DLR)
 iThe Displacement Length Ratio (DLR) is a figure that points out the boat's weight compared to its waterline length. The DLR is obtained by dividing the boat's displacement in tons by the cube of one one-hundredth of the waterline length (in feet).
The DLR can be used to compare the relative mass of different sailboats no matter what their length:

a DLR less than 180 is indicative of a really light sailboat (race boat made for planning), while a DLR greater than 300 is indicative of a heavy cruising sailboat.
203
Ballast ratio
 iThe Ballast ratio is an indicator of stability; it is obtained by dividing the boat's displacement by the mass of the ballast. Since the stability depends also of the hull shapes and the position of the center of gravity, only the boats with similar ballast arrangements and hull shapes should be compared.

The higher the ballast ratio is, the greater is the stability.
39 %
Critical hull speed
 iAs a ship moves in the water, it creates standing waves that oppose its movement. This effect increases dramatically the resistance when the boat reaches a speed-length ratio (speed-length ratio is the ratio between the speed in knots and the square root of the waterline length in feet) of about 1.2 (corresponding to a Froude Number of 0.35) . This very sharp rise in resistance, between speed-length ratio of 1.2 to 1.5, is insurmountable for heavy sailboats and so becomes an apparent barrier. This leads to the concept of "hull speed".
The hull speed is obtained by multiplying the square root of the waterline length (in feet) by 1.34.
6.07 knots

Contest 250C's auxiliary engine

Engine(s)
1 inboard engine
Fuel type
Diesel
Fuel tank capacity
11.9 gal45 liters

Contest 250C's accommodations and layout

Cockpit
Closed aft cockpit
Cabin(s)
1
Berth(s) (min./max.)
2 / 4
Head(s)
1
Freshwater tank capacity
15.3 gal58 liters
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