Boréal 47

Sailboat specifications

The Boréal 47 is a 47’8” (14.55m) cruising sailboat designed by Jean-François Delvoye (France). She is built since 2010 by Boréal (France). She has been awarded "2018 - Cruising World - Boat of the Year: Overall Boat of the Year" and "2018 - Cruising World - Boat of the Year: Midsize Cruiser 44 to 47 Feet".

Boréal 47's main features

Model

Boréal 47

Hull type

Monohull

Category

Offshore cruising sailboat

Sailboat builder

Boréal

Sailboat designer

Jean-François Delvoye

Country

France

Construction

Hull and deck: aluminum

First built hull

2010

Last built hull

Still in production

Award(s)

2018: Cruising World - Boat of the Year: Overall Boat of the Year
2018: Cruising World - Boat of the Year: Midsize Cruiser 44 to 47 Feet

Appendages

Centerboard : pivoting centerboard

Helm

Single helm wheel

Rudder

Single spade rudder

Unsinkable

Trailerable

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)

About

471 000 €

(2020)

Boréal 47's main dimensions

Hull length: 47’ 8”14.55 m
Waterline length: 38’ 2”11.63 m
Beam (width): 14’ 1”4.3 m
Waterline beam (width): 11’ 2”3.4 m
Draft: 8’ 1”2.48 m
Draft when appendages up: 3’ 4”1.02 m
Mast height from D_WL: 60’ 6”18.45 m
Light displacement (M_LC): 23589 lb10700 kg
Ballast weight: 8378 lb3800 kg
Ballast type: Lead

Boréal 47's rig and sails

Upwind sail area: 1076 ft²100 m²
Mainsail area: 484 ft²45 m²
Genoa area: 592 ft²55 m²
Staysail area: 237 ft²22 m²
Rigging type: Cutter Marconi masthead
Rotating spars: No
Spreaders angle: No spreader
Standing rigging: 1x19 strand wire continuous

Boréal 47'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.: 222 ft²/T20.59 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.: 193
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.: 36 %
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.: 8.28 knots