Detailed sailboat specifications and datasheets since 2015
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Imperial & Metricboth
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Oyster 675 (Standard) vs Oyster 675 (Keel and centerboard)

Main featuresOyster 675 StandardOyster 675 Keel and centerboard
Model
Oyster 675
Oyster 675
Version
Standard
Keel and centerboard
Hull type
Monohull
Monohull
Category
Offshore deck saloon cruising sailboat
Offshore deck saloon cruising sailboat
Sailboat builder
Oyster
Oyster
Sailboat designer
Country
United Kingdom
United Kingdom
Construction
Hull and deck: GRP (glass reinforced polyester)
Hull and deck: GRP (glass reinforced polyester)
First built hull
2014
2014
Last built hull
Still in production
Still in production
Appendages
Keel : L-shaped keel (with bulb)
Centerboard : pivoting centerboard in the keel
Helm
Twin helm wheels
Twin helm wheels
Rudder
Twin spade rudders
Twin spade rudders
Unsinkable
No
No
Trailerable
No
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
A
Standard public price ex. VAT (indicative only)
4196517 2016
4196517 2016
 
Main dimensionsOyster 675 StandardOyster 675 Keel and centerboard
Overall length
69’ 1”21.07 m
69’ 1”21.07 m
Hull length
65’ 4”19.89 m
65’ 4”19.89 m
Waterline length
59’ 7”18.16 m
59’ 7”18.16 m
Beam (width)
18’ 6”5.65 m
18’ 6”5.65 m
Draft
9’ 8”2.95 m
14’ 8”4.48 m
Draft when appendages up
6’ 2”1.9 m
Mast height from DWL
100’ 11”30.75 m
100’ 11”30.75 m
Light displacement (MLC)
82673 lb37500 kg
93829 lb42560 kg
 
Rig and sailsOyster 675 StandardOyster 675 Keel and centerboard
Upwind sail area
2465 ft²229 m²
2465 ft²229 m²
Rigging type
Sloop Marconi 9/10
Sloop Marconi 9/10
Mast configuration
Deck stepped mast
Deck stepped mast
Rotating spars
No
No
Number of levels of spreaders
3
3
Spreaders angle
Swept-back
Swept-back
Spars construction
Aluminum spars
Aluminum spars
 
PerformancesOyster 675 StandardOyster 675 Keel and centerboard
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.
220 ft²/T20.44 m²/T
202 ft²/T18.79 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.
177
201
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.
10.34 knots
10.34 knots
 
Auxiliary engineOyster 675 StandardOyster 675 Keel and centerboard
Engine(s)
1 inboard engine
1 inboard engine
Engine(s) power
180 HP
180 HP
Fuel type
Diesel
Diesel
Fuel tank capacity
501.9 gal1900 liters
501.9 gal1900 liters
 
Accommodations and layoutOyster 675 StandardOyster 675 Keel and centerboard
Cockpit
Center cockpit
Center cockpit
Cabin(s) (min./max.)
4 / 5
4 / 5
Berth(s) (min./max.)
8 / 10
8 / 10
Head(s) (min./max.)
3 / 4
3 / 4
Freshwater tank capacity
409.5 gal1550 liters
409.5 gal1550 liters
 
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