Detailed sailboat specifications and datasheets since 2015
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Sense 51 Shoal draft

Sailboat specifications

The Sense 51 is a 49’1” (14.98m) cruising sailboat designed by Berret Racoupeau Yachts Design (France). She was built between 2016 and 2018 by Bénéteau (France). The Shoal draft version features a shorter keel to grant access to shallow areas.

The Sense 51 is as well listed, on Boat-Specs.com, in Deep draft version (see all the versions compared).

Sense 51's main features

Model
Sense 51
Version
Shoal draft
Hull type
Monohull
Category
Cruising sailboat
Sailboat builder
Sailboat designer
Sailboat range
Country
France
Construction
GRP (glass reinforced polyester):
- Hull: Single skin fiberglass polyester
- Deck: Sandwich balsa fiberglass polyester
First built hull
2016
Last built hull
2018
Appendages
Keel : L-shaped keel (with bulb)
Helm
Twin helm wheels
Rudder
Twin spade rudders
Unsinkable
No
Trailerable
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
Standard public price ex. VAT (indicative only)
About 
306 000
 (2017)

Sense 51's main dimensions

Overall length
52’ 4”15.95 m
Hull length
49’ 1”14.98 m
Waterline length
46’ 1”14.05 m
Beam (width)
15’ 11”4.86 m
Draft
6’ 1”1.85 m
Mast height from DWL
74’ 2”22.62 m
Light displacement (MLC)
35274 lb16000 kg
Ballast weight
9811 lb4450 kg
Ballast type
Cast iron

Sense 51's rig and sails

Upwind sail area
1324 ft²123 m²
Downwind sail area
2669 ft²248 m²
Mainsail area
678 ft²63 m²
Genoa area
646 ft²60 m²
Jib area
495 ft²46 m²
Staysail area
258 ft²24 m²
Asymmetric spinnaker area
1991 ft²185 m²
Code 0 area
1130 ft²105 m²
I
 iFore triangle height (from mast foot to fore stay top attachment)
65’ 7”20 m
J
 iFore triangle base (from mast foot to bottom of forestay)
20’ 2”6.15 m
P
 iMainsail hoist measurement (from tack to head)
62’18.9 m
E
 iMainsail foot measurement (from tack to clew)
19’ 6”5.95 m
Rigging type
Sloop Marconi masthead
Mast configuration
Deck stepped mast
Rotating spars
No
Number of levels of spreaders
2
Spreaders angle
Swept-back
Spars construction
Aluminum spars
Standing rigging
1x19 strand wire

Sense 51'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.
208 ft²/T19.37 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.
420 ft²/T39.06 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.
163
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.
9.10 knots

Sense 51's auxiliary engine

Engine(s)
1 inboard engine
Engine(s) power
80 HP
Fuel type
Diesel
Fuel tank capacity
109.6 gal415 liters

Sense 51's accommodations and layout

Cockpit
Closing aft cockpit with opening system
Cabin(s) (min./max.)
2 / 4
Berth(s) (min./max.)
4 / 9
Head(s)
2
Freshwater tank capacity
150.6 gal570 liters
Holding tank capacity
21.1 gal80 liters
Fridge/ice-box capacity
79.3 gal300 liters
Boiler capacity
10.6 gal40 liters
Maximum headroom
6’ 8”2.05 m
Galley headroom
6’ 6”1.98 m
Head headroom
6’ 6”1.99 m

Sense 51's saloon

Maximum headroom
6’ 6”1.98 m

Sense 51's fore cabin

Maximum headroom
6’ 2”1.9 m
Berth length
6’ 7”2 m
Berth width (head/feet)
5’ 2”1.57 m / 3’ 4”1.02 m

Sense 51's aft cabin

Maximum headroom
6’ 6”1.98 m
Berth length
6’ 7”2 m
Berth width (head/feet)
4’ 8”1.43 m / 3’ 5”1.05 m
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