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Sailboat specifications and datasheets

Southerly 35 RS

The Southerly 35 RS is a 35’6” monohull sailboat designed by Rob Humphreys. She was built by Northshore (United Kingdom) and made of GRP (glass reinforced polyester). The production started in 2007 .

The Southerly 35 RS belongs to the Southerly range.

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Southerly 35 RS's   Main Features
Model Southerly 35 RS
Type of hull Monohull
Category Cruising sailboat
Shipyard
Designer Rob Humphreys
Range Southerly
Construction GRP (glass reinforced polyester)
First built hull 2007
Last built hull Discontinued
Appendages Keel (lifting) :
Swing keel
Helm 1 wheel
Rudder 2 spade rudders
Cockpit Closed aft cockpit
Unsinkable No
Trailerable No
EC certification A
Standard public price ex. VAT (indicative only) N/A
Southerly 35 RS's   Main dimensions
Length overall 35’ 6”
Hull length 35’ 6”
Waterline length 30’ 2”
Beam (width) 11’ 8”
Draft 7’ 2”
Draft when appendages up 2’ 5”
Mast height from DWL 54’ 1”
Light displacement 15388 lbs
Ballast weight 7176 lbs
Southerly 35 RS's   Rig and sails
Upwind sail area 581 sq.ft
Downwind sail area 883 sq.ft
Mainsail area 355 sq.ft
Genoa area 226 sq.ft
Gennaker area 527 sq.ft
Rigging type Sloop Marconi 9/10
Rotating spars No
Mast position Deck stepped mast
Spars Mast and boom in Aluminum
Number of levels of spreaders 2
Spreaders angle Swept-back
Southerly 35 RS'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.
14.79
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. 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.
22.45
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.
252
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.
47 %
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.
7.37 knots
Southerly 35 RS's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine 29 HP
Fuel type Diesel
Fuel tank capacity 42.5 gal
Southerly 35 RS's   Accommodation
Cabin(s) 2
Berth(s) (min/max) 4 / 6
Head(s) 1
Fresh water tank capacity 49.4 gal

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