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Sailboat specifications and datasheets

Oyster 26

The Oyster 26 is a 26’2” monohull sailboat designed by Kim Holman and Donald Pye. She was built by Oyster (United Kingdom) and made of GRP (glass reinforced polyester). This sailboat was produced between 1978 and 1981 with 47 hulls completed.
Oyster 26 Oyster 26 layoutOyster 26 sailingOyster 26 sailingOyster 26 sailingOyster 26 sailing
Oyster 26's   Main Features
Model Oyster 26
Type of hull Monohull
Category Cruising sailboat
Shipyard
Designer Kim Holman
Donald Pye
Construction GRP (glass reinforced polyester)
First built hull 1978
Last built hull 1981
Number of hulls built 47
Appendages Keel :
Fin without bulb
Helm 1 tiller
Rudder 1 transom hung rudder
Cockpit Closed aft cockpit
Unsinkable No
Trailerable No
Standard public price ex. VAT (indicative only) N/A
Oyster 26's   Main dimensions
Hull length 26’ 2”
Waterline length 22’ 8”
Beam (width) 9’ 10”
Draft 4’ 10”
Light displacement 6360 lbs
Ballast weight 2535 lbs
Oyster 26's   Rig and sails
Upwind sail area 409 sq.ft
Rigging type Sloop Marconi 3/4
Rotating spars No
Mast position Deck stepped mast
Spars Mast and boom in Aluminum
Standing rigging 1x19 strand wire continuous
Number of levels of spreaders 1
Spreaders angle Swept-back
Oyster 26's   Performances
Upwind sail area to displacementiThe 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 23 it indicates a fast sailboat.
18.75
Displacement-Length ratio (DLR)iThe Displacement Length ratio is a figure that points out the boat's weight compared to its waterline length. 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.
245
Ballast ratioiThe Ballast ratio is an indicator of the stability; it is obtained by dividing the boat's displacement by the weight of the ballast. Since the stability depends also of the hull shape and the position of the center of gravity, only boats with similar ballast arrangements and hull shape should be considered.
Higher the ballast ratio is, greater is the stability.
40 %
Hull speediAs 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.
6.39 knots
Oyster 26's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine 8 HP
Fuel type Diesel
Fuel tank capacity 10.6 gal
Oyster 26's   Accommodation
Cabin(s) 1
Berth(s) (min/max) 4 / 6
Fresh water tank capacity 30.4 gal

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