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Sailboat specifications and datasheets

Oyster 545 keel and centerboard

The Oyster 545, here in "keel and centerboard" version, is a 52’11” monohull sailboat designed by Rob Humphreys. She was built by Oyster (United Kingdom) and made of GRP (glass reinforced polyester). The production started in 2013 .

The Oyster 545 has also been marketed as Oyster 54 and is as well listed, on Boat-Specs.com, in version Standard and Shoal draft.

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Oyster 545's   Main Features
Model Oyster 545
Version Keel and centerboard
Type of hull Monohull
Category Offshore deck saloon cruising sailboat
Shipyard
Designer Rob Humphreys
Construction GRP (glass reinforced polyester)
First built hull 2013
Last built hull Still in production
Appendages Centerboard :
Centerboard in the keel
Helm 1 wheel
Rudder 2 spade rudders
Cockpit Central cockpit
Unsinkable No
Trailerable No
EC certification A
Standard public price ex. VAT (indicative only) About
1 300 000
(2016)
Oyster 545's   Main dimensions
Length overall 53’ 11”
Hull length 52’ 11”
Waterline length 46’ 4”
Beam (width) 15’ 7”
Draft 11’ 7”
Draft when appendages up 5’ 1”
Mast height from DWL 70’ 6”
Light displacement 46992 lbs
Oyster 545's   Rig and sails
Upwind sail area 1659 sq.ft
Rigging type Sloop Marconi masthead
Rotating spars No
Mast position Keel stepped mast
Spars Mast and boom in Aluminum
Number of levels of spreaders 2
Spreaders angle Swept-back
Oyster 545'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.
20.04
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.
215
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.
9.11 knots
Oyster 545's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine 110 HP
Fuel type Diesel
Fuel tank capacity 224.5 gal
Oyster 545's   Accommodation
Cabin(s) 3
Berth(s) (min/max) 6 / 8
Head(s) 2
Fresh water tank capacity 198.1 gal

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