Dufour 520 Grand Large
Sailboat specifications
The Dufour 520 Grand Large is a 48’5” (14.75m) cruising sailboat designed by Felci Yachts (Italy). She is built since 2017 by Dufour (France). She has been awarded "2018 - Cruising World - Boat of the Year: Full-Size Cruiser 50 to 54 Feet".
Find out more about the Dufour 520 Grand Large on Boat-Spec's blog: New sailboats 2017 - France 1/2.
Find out more about the Dufour 520 Grand Large on Boat-Spec's blog: New sailboats 2017 - France 1/2.
Dufour 520 Grand Large's main features
- Model
- Dufour 520 Grand Large
- Hull type
- Monohull
- Category
- Offshore cruising sailboat
- Sailboat builder
- Sailboat designer
- Sailboat range
- Country
- France
- Construction
- GRP (glass reinforced polyester):
- Hull: Single skin fiberglass polyester
- Deck: Sandwich fiberglass polyester - First built hull
- 2017
- Last built hull
- Still in production
- Award(s)
- 2018: Cruising World - Boat of the Year: Full-Size Cruiser 50 to 54 Feet
- Appendages
- Keel : L-shaped keel (with bulb)
- Helm
- Twin helm wheels
- Rudder
- Single spade rudder
- Unsinkable
- No
- Trailerable
- No
- EC design categoryiThe 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)
- About283 000 €(2020)
Dufour 520 Grand Large's main dimensions
- Overall length
- 49’ 11”15.2 m
- Hull length
- 48’ 5”14.75 m
- Waterline length
- 44’ 10”13.67 m
- Beam (width)
- 15’ 8”4.8 m
- Draft
- 7’ 6”2.3 m
- Light displacement (MLC)
- 33609 lb15245 kg
- Ballast weight
- 8977 lb4072 kg
Dufour 520 Grand Large's rig and sails
- Upwind sail area
- 1085 ft²100.8 m²
- Downwind sail area
- 1860 ft²172.8 m²
- Mainsail area
- 568 ft²52.8 m²
- Genoa area
- 517 ft²48 m²
- Gennaker area
- 1292 ft²120 m²
- Rigging type
- Sloop Marconi 9/10
- Mast configuration
- Deck stepped mast
- Rotating spars
- No
- Number of levels of spreaders
- 2
- Spreaders angle
- Swept-back
- Spars construction
- Aluminum spars (carbon fiber spars as an option)
Dufour 520 Grand Large'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 25 it indicates a fast sailboat. - 176 ft²/T16.39 m²/T
- 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. - 303 ft²/T28.11 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. - 169
- Ballast ratioiThe 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. - 27 %
- Critical 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. - 8.97 knots
Dufour 520 Grand Large's auxiliary engine
- Engine(s)
- 1 inboard engine
- Engine(s) power
- 75 HP
- Fuel type
- Diesel
- Fuel tank capacity
- 118.9 gal450 liters
Dufour 520 Grand Large's accommodations and layout
- Cockpit
- Closing aft cockpit with opening system
- Cabin(s) (min./max.)
- 3 / 4
- Berth(s) (min./max.)
- 6 / 10
- Head(s) (min./max.)
- 2 / 3
- Freshwater tank capacity
- 190.2 gal720 liters
- Galley headroom
- 6’ 5”1.96 m
Dufour 520 Grand Large's saloon
- Maximum headroom
- 6’ 7”2 m
- Saloon table length
- 3’ 10”1.17 m
- Saloon table width
- 3’ 10”1.17 m
- Berth length
- 6’ 11”2.1 m
- Chart table
- 3’0.9 m x 2’0.6 m
Dufour 520 Grand Large's fore cabin
- Maximum headroom
- 6’ 5”1.96 m
- Berth length
- 6’ 6”1.97 m
- Berth width
- 5’ 7”1.7 m
Dufour 520 Grand Large's aft cabin
- Maximum headroom
- 6’ 4”1.93 m
- Berth length
- 6’ 2”1.9 m
- Berth width
- 4’ 11”1.5 m
Dufour 520 Grand Large sailing - - 10/17
Picture extracted from the commercial documentation © Dufour
Picture extracted from the commercial documentation © Dufour
Dufour 520 Grand Large sailing - - 11/17
Picture extracted from the commercial documentation © Dufour
Picture extracted from the commercial documentation © Dufour
Dufour 520 Grand Large sailing - - 12/17
Picture extracted from the commercial documentation © Dufour
Picture extracted from the commercial documentation © Dufour
Dufour 520 Grand Large cockpit - - 13/17
Picture extracted from the commercial documentation © Dufour
Picture extracted from the commercial documentation © Dufour
Dufour 520 Grand Large interior and accommodations - - 14/17
Picture extracted from the commercial documentation © Dufour
Picture extracted from the commercial documentation © Dufour
Dufour 520 Grand Large interior and accommodations - - 15/17
Picture extracted from the commercial documentation © Dufour
Picture extracted from the commercial documentation © Dufour
Dufour 520 Grand Large interior and accommodations - - 16/17
Picture extracted from the commercial documentation © Dufour
Picture extracted from the commercial documentation © Dufour
Dufour 520 Grand Large interior and accommodations - - 17/17
Picture extracted from the commercial documentation © Dufour
Picture extracted from the commercial documentation © Dufour
Similar sailboats that may interest you:
Sailboats
First built hull
Hull length
2014
48’ 8”14.85 m
2010
49’ 2”14.99 m
2004
49’ 2”14.99 m
1988
52’ 6”16 m
2016
44’ 11”13.68 m
2016
44’ 4”13.5 m
2016
48’ 5”14.75 m
2016
49’ 1”14.98 m
2016
49’ 1”14.98 m
2000
52’ 6”16 m
2017
50’ 11”15.51 m
2009
47’ 10”14.58 m
2016
48’ 6”14.77 m
2018
48’14.63 m
2020
50’ 11”15.5 m