Detailed sailboat specifications and datasheets since 2015
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Océanis 55.1 Wing keel

Sailboat specifications

The Océanis 55.1 is a 52’6” (15.99m) cruising sailboat designed by Berret Racoupeau Yachts Design (France). She is built since 2017 by Bénéteau (France). The Wing keel version is offered with a short keel fitted with large winglets. This configuration provides an interesting draft / low center of gravity / upwind performance trade-off.

The Océanis 55.1 is as well listed, on, in Shoal draft and Deep draft version (see all the versions compared).

Find out more about the Océanis 55.1 on Boat-Spec's blog: New sailboats 2017 - France 2/2.

Océanis 55.1's main features

Océanis 55.1
Wing keel
Hull type
Offshore cruising sailboat
Sailboat builder
Sailboat designer
Sailboat range
GRP (glass reinforced polyester):
- Hull: Sandwich balsa fiberglass polyester (vacuum infusion)
- Deck: Sandwich balsa fiberglass polyester (injection molding process)
First built hull
Last built hull
Still in production
Keel : wing keel
Twin helm wheels
Single spade rudder
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
Standard public price ex. VAT (indicative only)
371 000

Océanis 55.1's main dimensions

Overall length
55’ 1”16.78 m
Hull length
52’ 6”15.99 m
Waterline length
49’ 8”15.16 m
Beam (width)
16’ 4”4.96 m
5’ 1”1.56 m
Mast height from DWL
78’ 7”23.95 m
Light displacement (MLC)
38636 lb17525 kg
Ballast weight
10703 lb4855 kg
Ballast type
Cast iron

Océanis 55.1's rig and sails

Upwind sail area
1432 ft²133 m²
Downwind sail area
2874 ft²267 m²
Mainsail area
721 ft²67 m²
Genoa area
710 ft²66 m²
Jib area
570 ft²53 m²
Asymmetric spinnaker area
2153 ft²200 m²
Code 0 area
1249 ft²116 m²
 iFore triangle height (from mast foot to fore stay top attachment)
68’ 8”20.93 m
 iFore triangle base (from mast foot to bottom of forestay)
21’ 8”6.6 m
 iMainsail hoist measurement (from tack to head)
65’ 1”19.85 m
 iMainsail foot measurement (from tack to clew)
19’ 5”5.9 m
Rigging type
Sloop Marconi 9/10
Mast configuration
Deck stepped mast
Rotating spars
Number of levels of spreaders
Spreaders angle
Spars construction
Aluminum spars
Standing rigging
1x19 strand wire

Océanis 55.1's performances

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.
212 ft²/T19.71 m²/T
Downwind 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.
426 ft²/T39.57 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.
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.
28 %
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.
9.45 knots

Océanis 55.1's auxiliary engine

1 inboard engine
Engine(s) power (min./max.)
80 HP / 110 HP
Fuel type
Fuel tank capacity
105.7 gal400 liters

Océanis 55.1's accommodations and layout

Open aft cockpit
Cabin(s) (min./max.)
3 / 5
Berth(s) (min./max.)
6 / 12
Head(s) (min./max.)
2 / 4
Freshwater tank capacity
183.3 gal694 liters
Holding tank capacity
21.1 gal80 liters
Fridge/ice-box capacity
60.8 gal230 liters
Boiler capacity
10.6 gal40 liters
Galley headroom
6’ 5”1.95 m
Head headroom
6’ 4”1.91 m

Océanis 55.1's saloon

Maximum headroom
6’ 6”1.98 m
Berth length
6’ 7”2 m

Océanis 55.1's fore cabin

Maximum headroom
6’ 4”1.93 m
Berth length
6’ 11”2.1 m
Berth width (head/feet)
6’1.82 m / 3’ 8”1.14 m

Océanis 55.1's aft cabin

Maximum headroom
6’ 5”1.95 m
Berth length
6’ 8”2.03 m
Berth width (head/feet)
4’ 11”1.5 m / 3’ 11”1.18 m
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