The Southerly 115 was designed by Dick Carter and built in the UK by Northshore Yachts Ltd.
Shown above and described below is the single-rudder MkII version, unlike versions III and IV with twin rudders which enabled the boat to dry-out upright.
Underwater Profile: Swing keel
Hull Material: GRP (Fiberglass)
Length Overall: 36'10" (11.2m)
Waterline Length: 27'6" (8.40)
Beam: 11'11" (3.6m)
Draft: 2'3" (0.7m) with keel up; 8'1" (2.46 m) with keel down
Rig Type: Masthead sloop
Displacement: 15,215lb (6,902kg)
Designer: Dick Carter
Builder: Northshore Yachts (UK)
Year First Built: 1983
Owners Association: Southerly Owners Association
1. Sail Area/Displacement Ratio: 10.0
2. Ballast/Displacement Ratio: 49.9
3. Displacement/Length Ratio: 327
4. Comfort Ratio: 28.6
5. Capsize Screening Formula: 1.9
read more about these all-revealing numbers...
1. A Sail Area/Displacement Ratio of just 10.0 suggests that the Southerly 115 will need a stiff breeze to get her going. In light conditions, unless you've got plenty of time on your hands, motor-sailing may be the way to go.
2. A Ballast/Displacement Ratio of 49.9 means that the Southerly 115 will stand up well to her canvas in a blow, helping her to power through the waves.
3. A Displacement/Length Ratio of 327, tells us the Southerly 115 is clearly a heavy displacement cruising boat. You can load her down with all your cruising gear and equipment and it will hardly affect her waterline. Not an ideal choice for coastal sailing, but she'll come into her own on an offshore passage in testing conditions.
4. Ted Brewer's Comfort Ratio of 28.6 suggests that crew comfort of a Southerly 115 in a seaway is similar to what you would associate with the motion of a coastal cruiser with moderate stability, which is not encouraging news for anyone prone to seasickness.
5. The Capsize Screening Formula (CSF) of 1.9 tells us that a Southerly 115 would be a safer choice of sailboat for an ocean passage than one with a CSF of more than 2.0.
May 29, 23 08:35 AM
May 26, 23 09:28 AM
May 19, 23 05:13 AM