Oyster 475 (Standard)

Main features	Oyster 475 Standard
Model	Oyster 475
Version	Standard
Hull type	Monohull
Category	Offshore cruising sailboat
Sailboat builder	Oyster
Sailboat designer	Holman & Pye
Country	United Kingdom
Construction	Hull and deck: GRP (glass reinforced polyester)
First built hull	2012
Last built hull	2018
Appendages	Keel : L-shaped keel (with bulb)
Helm	Single helm wheel
Rudder	Single rudder on skeg
Unsinkable	No
Trailerable	No
EC design category iThe CE design category indicates the ability to cope with certain weather conditions (the sailboat is designed for these conditions) A: Wind < force 9, Waves < 10m B: Wind < force 8, Waves < 8m C: Wind < force 6, Waves < 4m D: Wind < force 4, Waves < 0,5m	A
Standard public price ex. VAT (indicative only)	1167579 2016

Main dimensions	Oyster 475 Standard
Overall length	48’ 7”14.81 m
Hull length	47’ 6”14.48 m
Waterline length	40’ 7”12.36 m
Beam (width)	14’ 6”4.41 m
Draft	7’ 1”2.16 m
Mast height from D_WL	62’ 5”19.03 m
Light displacement (M_LC)	35274 lb16000 kg

Rig and sails	Oyster 475 Standard
Upwind sail area	1293 ft²120.1 m²
Rigging type	Sloop Marconi masthead
Mast configuration	Keel stepped mast
Rotating spars	No
Number of levels of spreaders	3
Spreaders angle	Swept-back
Spars construction	Aluminum spars

Performances	Oyster 475 Standard
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.	204 ft²/T18.91 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.	240
Righting moment @ 30° iThe righting moment is a moment (torque) that tends to restore a boat to its previous position after heeling. Its value corresponds to the torque needed to heel the boat for this angle. Higher the righting moment is for an angle, greater is the stability.	73777 lb.ft10200 kg.m
Maximum righting moment iThe righting moment is a moment (torque) that tends to restore a boat to its previous position after heeling. Its value corresponds to the torque needed to heel the boat for this angle. Higher the righting moment is for an angle, greater is the stability.	95476 lb.ft13200 kg.m @ 50.00 °
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.	8.53 knots

Auxiliary engine	Oyster 475 Standard
Engine(s)	1 inboard engine
Engine(s) power	75 HP
Fuel type	Diesel
Fuel tank capacity	198.1 gal750 liters

Accommodations and layout	Oyster 475 Standard
Cockpit	Center cockpit
Cabin(s) (min./max.)	2 / 3
Berth(s) (min./max.)	4 / 8
Head(s)	2
Freshwater tank capacity	171.7 gal650 liters