Boat-Specs.com

Sailboat specifications and datasheets

Southerly 440

The Southerly 440 is a 42’4” monohull sailboat designed by Rob Humphreys. She was built by Discovery Yachts Group (United Kingdom) and made of single skin bottom, sandwich sides and deck: fiberglass / vinylester vacuum bagged. The production started in 2019 .

The Southerly 440 belongs to the Southerly range.

Discovery Yachts Group Southerly 440 Discovery Yachts Group Southerly 440 sailplanDiscovery Yachts Group Southerly 440 layoutDiscovery Yachts Group Southerly 440 sailingDiscovery Yachts Group Southerly 440 sailingDiscovery Yachts Group Southerly 440 sailingDiscovery Yachts Group Southerly 440 sailingDiscovery Yachts Group Southerly 440 accommodationsDiscovery Yachts Group Southerly 440 accommodationsDiscovery Yachts Group Southerly 440 accommodations
Southerly 440's   Main Features
Model Southerly 440
Type of hull Monohull
Category Offshore cruising sailboat
Shipyard
Designer Rob Humphreys
Range Southerly
Construction Hull and deck:
single skin bottom, sandwich sides and deck: fiberglass / vinylester vacuum bagged
First built hull 2019
Last built hull Still in production
Appendages Keel (lifting) :
Swing keel
Helm 1 wheel
Rudder 2 spade rudders
Cockpit Central cockpit
Unsinkable No
Trailerable No
EC certification A
Standard public price ex. VAT (indicative only)
N/A
Southerly 440's   Main dimensions
Length overall 42’ 4”
Hull length 42’ 4”
Waterline length 36’ 6”
Beam (width) 13’ 4”
Draft 8’ 11”
Draft when appendages up 2’ 10”
Mast height from DWL 61’ 6”
Light displacement 25003 lbs
Ballast weight 8091 lbs
Southerly 440's   Rig and sails
Upwind sail area 797 sq.ft
Mainsail area 472 sq.ft
Jib area 325 sq.ft
Rigging type Sloop Marconi (in-mast furling mainsail) 9/10
Rotating spars No
Mast position Keel stepped mast
Spars Mast and boom in Aluminum
Number of levels of spreaders 2
Spreaders angle Swept-back
Southerly 440'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.
14.66
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.
234
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.
32 %
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.
8.09 knots
Southerly 440's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine 57 HP
Fuel type None
Fuel tank capacity 74 gal
Southerly 440's   Accommodation
Cabin(s) 2
Berth(s) (min/max) 4 / 6
Head(s) 2
Fresh water tank capacity 141.6 gal

Similar sailboats that might interest you :

Compare4 max.SailboatHull lengthFirst built hull
Southerly 43542’ 2”2017
Southerly 43042’ 2”2017
Southerly 42042’ 2”2010
Hallberg-Rassy 40 MkII40’ 8”2015
Hallberg-Rassy 41241’ 5”2012
Impression 45 Deep draft42’ 8”2015
Southerly 42 RST42’ 2”2007
Moody 41 Aft Deep draft41’ 8”2009
Nordship 430 DS43’ 6”2011
Nordship 430 DS Classic43’ 6”2011
Contest 42CS Standard42’ 2”2013
Impression 45.1 Standard42’ 8”2019
Marlow Hunter 42 SS Shoal draft40’2017
Hallberg-Rassy 43 Mk II44’ 6”2007
Hallberg-Rassy 4444’ 11”2016
^