| Main features | Océanis 311 Fin keel | Océanis 311 Keel and centerboard |
Model | Océanis 311 | Océanis 311 |
Version | Fin keel | Keel and centerboard |
Hull type | Monohull | Monohull |
Category | Cruising sailboat | Cruising sailboat |
Sailboat builder | Bénéteau | Bénéteau |
Sailboat designer | ||
Sailboat range | ||
Country | France | France |
Construction | GRP (glass reinforced polyester): - Hull: Single skin fiberglass polyester - Deck: Sandwich balsa fiberglass polyester | GRP (glass reinforced polyester): - Hull: Single skin fiberglass polyester - Deck: Sandwich balsa fiberglass polyester |
Number of hulls built | 1042 | 1042 |
First built hull | 1997 | 1997 |
Last built hull | 2003 | 2003 |
Appendages | Keel : L-shaped keel (with bulb) | Centerboard : pivoting centerboard in the keel |
Helm | Single helm wheel | Single helm wheel |
Rudder | Single spade rudder | 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 | B | B |
| Main dimensions | Océanis 311 Fin keel | Océanis 311 Keel and centerboard |
Overall length | 32’ 4”9.85 m | 32’ 4”9.85 m |
Hull length | 31’ 2”9.5 m | 31’ 2”9.5 m |
Waterline length | 28’ 11”8.8 m | 28’ 11”8.8 m |
Beam (width) | 10’ 7”3.23 m | 10’ 7”3.23 m |
Draft | 4’ 10”1.45 m | 6’ 7”2 m |
Draft when appendages up | 2’ 7”0.8 m | |
Light displacement (MLC) | 8047 lb3650 kg | 8708 lb3950 kg |
Ballast weight | 2425 lb1100 kg | 3086 lb1400 kg |
Ballast type | Cast iron | Cast iron |
French customs tonnage | 9.30 Tx | 9.30 Tx |
| Rig and sails | Océanis 311 Fin keel | Océanis 311 Keel and centerboard |
Upwind sail area | 538 ft²50 m² | 538 ft²50 m² |
Mainsail area | 277 ft²25.7 m² | 277 ft²25.7 m² |
Genoa area | 262 ft²24.3 m² | 262 ft²24.3 m² |
Rigging type | Sloop Marconi 19/20 | Sloop Marconi 19/20 |
Mast configuration | Deck stepped mast | Deck stepped mast |
Rotating spars | No | No |
Number of levels of spreaders | 1 | 1 |
Spreaders angle | Swept-back | Swept-back |
Spars construction | Aluminum spars | Aluminum spars |
Standing rigging | 1x19 strand wire continuous | 1x19 strand wire continuous |
| Performances | Océanis 311 Fin keel | Océanis 311 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. | 227 ft²/T21.09 m²/T | 215 ft²/T20.01 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. | 152 | 164 |
Ballast ratio iThe Ballast ratio is an indicator of stability; it is obtained by dividing the boat's displacement by the mass of the ballast. Since the stability depends also of the hull shapes and the position of the center of gravity, only the boats with similar ballast arrangements and hull shapes should be compared.The higher the ballast ratio is, the greater is the stability. | 30 % | 35 % |
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. | 7.20 knots | 7.20 knots |
| Auxiliary engine | Océanis 311 Fin keel | Océanis 311 Keel and centerboard |
Engine(s) | 1 inboard engine | 1 inboard engine |
Fuel type | Diesel | Diesel |
Fuel tank capacity | 18.5 gal70 liters | 18.5 gal70 liters |
| Accommodations and layout | Océanis 311 Fin keel | Océanis 311 Keel and centerboard |
Cockpit | Closed aft cockpit | Closed aft cockpit |
Cabin(s) (min./max.) | 2 / 3 | 2 / 3 |
Berth(s) (min./max.) | 6 / 8 | 6 / 8 |
Head(s) | 1 | 1 |
Freshwater tank capacity | 52.8 gal200 liters | 52.8 gal200 liters |
Fridge/ice-box capacity | 15.9 gal60 liters | 15.9 gal60 liters |
Boiler capacity | 5.8 gal22 liters | 5.8 gal22 liters |
Maximum headroom | 6’ 2”1.88 m | 6’ 2”1.88 m |
Galley headroom | 6’1.83 m | 6’1.83 m |
Head headroom | 5’ 11”1.81 m | 5’ 11”1.81 m |
| Saloon | Océanis 311 Fin keel | Océanis 311 Keel and centerboard |
Maximum headroom | 6’ 1”1.85 m | 6’ 1”1.85 m |
Berth length | 6’ 4”1.93 m | 6’ 4”1.93 m |
| Fore cabin | Océanis 311 Fin keel | Océanis 311 Keel and centerboard |
Maximum headroom | 5’ 10”1.76 m | 5’ 10”1.76 m |
Berth length | 6’ 7”2 m | 6’ 7”2 m |
Berth width | 4’ 7”1.4 m | 4’ 7”1.4 m |
| Aft cabin | Océanis 311 Fin keel | Océanis 311 Keel and centerboard |
Maximum headroom | 6’1.82 m | 6’1.82 m |
Berth length | 6’ 7”2 m | 6’ 7”2 m |
Berth width | 6’ 5”1.95 m | 6’ 5”1.95 m |