Southerly 54
Sailboat specifications
The Southerly 54 is a 54’7” (16.63m) cruising sailboat designed by Dubois Naval Architects (United Kingdom). She is built since 2020 by Discovery Yachts Group (United Kingdom).
The Southerly 54 has also been marketed as Southerly 540.
The Southerly 54 has also been marketed as Southerly 540.
Southerly 54's main features
- Model
- Southerly 54
- Hull type
- Monohull
- Category
- Offshore deck saloon cruising sailboat
- Sailboat builder
- Sailboat designer
- Sailboat range
- Country
- United Kingdom
- Construction
- GRP (glass reinforced polyester):
Single skin bottom, sandwich sides and deck: fiberglass vinylester vacuum bagged - First built hull
- 2020
- Last built hull
- Still in production
- Appendages
- Lifting keel : swing keel
- Helm
- Twin helm wheels
- Rudder
- Twin spade rudders
- 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)
- About940 000 €(2020)
Southerly 54's main dimensions
- Hull length
- 54’ 7”16.63 m
- Waterline length
- 48’ 11”14.9 m
- Beam (width)
- 15’ 8”4.8 m
- Draft
- 11’3.34 m
- Draft when appendages up
- 3’ 6”1.06 m
- Mast height from DWL
- 80’ 2”24.43 m
- Light displacement (MLC)
- 51478 lb23350 kg
Southerly 54's rig and sails
- Upwind sail area
- 1938 ft²180 m²
- Mainsail area
- 893 ft²83 m²
- Genoa area
- 1044 ft²97 m²
- Jib area
- 549 ft²51 m²
- Rigging type
- Sloop Marconi 9/10
- Mast configuration
- Keel stepped mast
- Rotating spars
- No
- Number of levels of spreaders
- 3
- Spreaders angle
- Swept-back
- Spars construction
- Aluminum spars
Southerly 54'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. - 237 ft²/T22.03 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. - 200
- 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. - 9.37 knots
Southerly 54's auxiliary engine
- Engine(s)
- 1 inboard engine
- Engine(s) power
- 146 HP
- Fuel type
- Diesel
- Fuel tank capacity
- 237.8 gal900 liters
Southerly 54's accommodations and layout
- Cockpit
- Center cockpit
- Cabin(s)
- 3
- Berth(s)
- 6
- Head(s)
- 2
- Freshwater tank capacity
- 211.3 gal800 liters
Discovery Yachts Group Southerly 54 - - 1/11
Picture extracted from the commercial documentation © Discovery Yachts Group
Picture extracted from the commercial documentation © Discovery Yachts Group
Discovery Yachts Group Southerly 54 sailplan - - 2/11
Picture extracted from the commercial documentation © Discovery Yachts Group
Picture extracted from the commercial documentation © Discovery Yachts Group
Discovery Yachts Group Southerly 54 layout - - 3/11
Picture extracted from the commercial documentation © Discovery Yachts Group
Picture extracted from the commercial documentation © Discovery Yachts Group
Discovery Yachts Group Southerly 54 sailing - - 4/11
Picture extracted from the commercial documentation © Discovery Yachts Group
Picture extracted from the commercial documentation © Discovery Yachts Group
Discovery Yachts Group Southerly 54 sailing - - 5/11
Picture extracted from the commercial documentation © Discovery Yachts Group
Picture extracted from the commercial documentation © Discovery Yachts Group
Discovery Yachts Group Southerly 54 sailing - - 6/11
Picture extracted from the commercial documentation © Discovery Yachts Group
Picture extracted from the commercial documentation © Discovery Yachts Group
Discovery Yachts Group Southerly 54 sailing - - 7/11
Picture extracted from the commercial documentation © Discovery Yachts Group
Picture extracted from the commercial documentation © Discovery Yachts Group
Discovery Yachts Group Southerly 54 interior and accommodations - - 8/11
Picture extracted from the commercial documentation © Discovery Yachts Group
Picture extracted from the commercial documentation © Discovery Yachts Group
Discovery Yachts Group Southerly 54 interior and accommodations - - 9/11
Picture extracted from the commercial documentation © Discovery Yachts Group
Picture extracted from the commercial documentation © Discovery Yachts Group
Discovery Yachts Group Southerly 54 interior and accommodations - - 10/11
Picture extracted from the commercial documentation © Discovery Yachts Group
Picture extracted from the commercial documentation © Discovery Yachts Group
Discovery Yachts Group Southerly 54 interior and accommodations - - 11/11
Picture extracted from the commercial documentation © Discovery Yachts Group
Picture extracted from the commercial documentation © Discovery Yachts Group
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