The Southerly 440 belongs to the Southerly range.
|Southerly 440's Main Features|
|Type of hull||Monohull|
|Category||Offshore cruising sailboat|
|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) :
|Rudder||2 spade rudders|
|Standard public price ex. VAT (indicative only)||
|Southerly 440's Main dimensions|
|Length overall||42’ 4”|
|Hull length||42’ 4”|
|Waterline length||36’ 6”|
|Beam (width)||13’ 4”|
|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|
|Mast position||Keel stepped mast|
|Spars||Mast and boom in Aluminum|
|Number of levels of spreaders||2|
|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.
|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.
|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.
|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.
|Southerly 440's Auxiliary engine|
|Engine type||Inboard engine|
|Fuel tank capacity||74 gal|
|Southerly 440's Accommodation|
|Berth(s) (min/max)||4 / 6|
|Fresh water tank capacity||141.6 gal|