| Main features | Oyster 825 Standard | Oyster 825 Shoal draft |
Model | Oyster 825 | Oyster 825 |
Version | Standard | Shoal draft |
Hull type | Monohull | Monohull |
Category | Offshore cruising sailboat | Offshore 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 | 2017 | 2017 |
Appendages | Keel : L-shaped keel (with bulb) | Keel : L-shaped keel (with bulb) |
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) | 8037684 2016 | 8037684 2016 |
| Main dimensions | Oyster 825 Standard | Oyster 825 Shoal draft |
Overall length | 82’ 6”25.15 m | 82’ 6”25.15 m |
Hull length | 79’ 2”24.14 m | 79’ 2”24.14 m |
Waterline length | 72’ 1”21.97 m | 72’ 1”21.97 m |
Beam (width) | 20’ 8”6.31 m | 20’ 8”6.31 m |
Draft | 11’ 2”3.42 m | 8’ 8”2.65 m |
Mast height from DWL | 112’ 1”34.16 m | 112’ 1”34.16 m |
Light displacement (MLC) | 123459 lb56000 kg | 123459 lb56000 kg |
| Rig and sails | Oyster 825 Standard | Oyster 825 Shoal draft |
Upwind sail area | 3439 ft²319.5 m² | 3439 ft²319.5 m² |
Rigging type | Sloop Marconi 19/20 | Sloop Marconi 19/20 |
Mast configuration | Keel stepped mast | Keel 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 |
| Performances | Oyster 825 Standard | Oyster 825 Shoal draft |
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. | 235 ft²/T21.83 m²/T | 235 ft²/T21.83 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. | 150 | 150 |
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. | 11.38 knots | 11.38 knots |
| Auxiliary engine | Oyster 825 Standard | Oyster 825 Shoal draft |
Engine(s) | 1 inboard engine | 1 inboard engine |
Engine(s) power | 305 HP | 305 HP |
Fuel type | Diesel | Diesel |
Fuel tank capacity | 792.5 gal3000 liters | 792.5 gal3000 liters |
| Accommodations and layout | Oyster 825 Standard | Oyster 825 Shoal draft |
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.) | 4 / 5 | 4 / 5 |
Freshwater tank capacity | 528.3 gal2000 liters | 528.3 gal2000 liters |