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Sailboat specifications and datasheets

Sense 51 shoal draft

The Sense 51, here in "shoal draft" version, is a 49’1” monohull sailboat designed by Jean Berret and Olivier Racoupeau. She was built by Bénéteau (France) and made of monolithic fiberglass / polyester. The production started in 2016 .

The Sense 51 belongs to the Sense range. The Sense 51 is as well listed, on Boat-Specs.com, in version Deep draft.

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Sense 51's   Main Features
Model Sense 51
Version Shoal draft
Type of hull Monohull
Category Cruising sailboat
Shipyard
Designer Jean Berret
Olivier Racoupeau
Range Sense
Construction Hull:
monolithic fiberglass / polyester
Deck:
sandwich balsa / fiberglass / polyester
First built hull 2016
Last built hull Still in production
Appendages Keel :
Fin with bulb
Helm 2 wheels
Rudder 2 spade rudders
Cockpit Open aft cockpit with closing system
Unsinkable No
Trailerable No
EC certification A
Standard public price ex. VAT (indicative only) About
306 000
(2017)
Sense 51's   Main dimensions
Length overall 52’ 4”
Hull length 49’ 1”
Waterline length 46’ 1”
Beam (width) 15’ 11”
Draft 6’ 1”
Mast height from DWL 74’ 2”
Light displacement 35274 lbs
Ballast weight 9811 lbs
Ballast type Cast iron
Sense 51's   Rig and sails
Upwind sail area 1324 sq.ft
Downwind sail area 2669 sq.ft
Mainsail area 678 sq.ft
Genoa area 646 sq.ft
Jib area 495 sq.ft
Staysail area 258 sq.ft
Asymetric spinnaker area 1991 sq.ft
Code 0 area 1130 sq.ft
Rigging type Sloop Marconi masthead
Rotating spars No
Mast position Deck stepped mast
Spars Mast and boom in Aluminum
Standing rigging 1x19 strand wire
Number of levels of spreaders 2
Spreaders angle Swept-back
IiFore triangle height (from mast foot to fore stay attachment) 65’ 7”
JiFore triangle base (from mast foot to bottom of forestay) 20’ 2”
PiMainsail hoist measurement (from tack to head) 62’
EiMainsail foot measurement (from tack to clew) 19’ 6”
Sense 51's   Performances
Upwind sail area to displacementiThe 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 23 it indicates a fast sailboat.
19.37
Downwind sail area to displacementiThe 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 23 it indicates a fast sailboat.
39.06
Displacement-Length ratio (DLR)iThe Displacement Length ratio is a figure that points out the boat's weight compared to its waterline length. 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.
163
Ballast ratioiThe Ballast ratio is an indicator of the stability; it is obtained by dividing the boat's displacement by the weight of the ballast. Since the stability depends also of the hull shape and the position of the center of gravity, only boats with similar ballast arrangements and hull shape should be considered.
Higher the ballast ratio is, greater is the stability.
28 %
Hull speediAs 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.
9.10 knots
Sense 51's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine 80 HP
Fuel type Diesel
Fuel tank capacity 109.6 gal
Sense 51's   Accommodation
Cabin(s) (min/max) 2 / 4
Berth(s) (min/max) 4 / 9
Head(s) 2
Fresh water tank capacity 150.6 gal
Water heater capacity 10.6 gal
Holding tank capacity 21.1 gal
Fridge/ice-box capacity 79.3 gal
Maximum headroom 6’ 8”
Galley headroom 6’ 6”
Head headroom 6’ 6”
Sense 51's   Saloon
Maximum headroom 6’ 6”
Sense 51's   Fore cabin
Maximum headroom 6’ 2”
Berth length 6’ 7”
Berth width (head/feet) 5’ 2”
3’ 4”
Sense 51's   Aft cabin
Maximum headroom 6’ 6”
Berth length 6’ 7”
Berth width (head/feet) 4’ 8”
3’ 5”

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