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Southerly 101
Designer: Carter/Northshore  ·  Builder: Northshore Yachts  ·  First built: 1983
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About the Southerly 101

Bearing the hallmark qualities that have made Southerly a respected name in British cruising, the Southerly 101 is a lifting-keel cruiser designed to open up shallow waters and tidal anchorages that would be off-limits to boats with fixed keels. Southerly's signature retractable keel system is central to the appeal of this design, allowing sailors to explore drying harbours, dry out safely on tidal flats, and access secluded anchorages with ease — capabilities that make it particularly well suited to the cruising grounds around the UK, northern Europe, and beyond. Built with the serious cruising sailor in mind, the 101 is intended for coastal and offshore passages where versatility and comfort matter as much as performance. Southerly boats are generally known for their well-considered interior layouts and practical deck arrangements, reflecting decades of input from bluewater cruisers. The lifting keel also provides flexibility in passage planning that fixed-keel cruisers simply cannot match. For those seeking a capable, go-anywhere cruiser with the freedom to explore shallow and drying anchorages, the Southerly 101 warrants serious consideration.

Core Dimensions
LOA (Length Overall) 33.75 ft / 10.29 m
LWL (Waterline Length) 25.00 ft / 7.62 m
Beam 10.25 ft / 3.12 m
Max Draft 5.83 ft / 1.78 m
Displacement 9,950.00 lb / 4,513 kg
Ballast 4,406.00 lb / 1,999 kg
Design & Construction
Hull Type Swing Keel
Rigging Type Masthead Sloop
Construction FG
Designer Carter/Northshore
Builder Northshore Yachts
First Built 1983
Last Built 2003
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Known Issues & What to Watch For

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Performance Ratios
Ballast/Displacement Ballast to Displacement ratio shows what percentage of the boat's total weight is ballast. Higher values generally mean better initial stability and stiffer sail carrying.
30–35% — Typical cruiser35–45% — Stiff performance boatOver 45% — Racing oriented
44.28
Displacement/Length Displacement to Length ratio measures how heavy a boat is relative to its waterline length. Lower values mean a lighter, faster boat.
Under 100 — Ultralight racer100–200 — Light cruiser/racer200–300 — Moderate cruiser300–400 — Heavy cruiserOver 400 — Very heavy
284.29
Pounds/Inch Immersion Pounds per Inch Immersion (PPI) tells you how much weight is needed to sink the boat one inch. Useful for calculating how additional gear and stores affect waterline. 5.49 pounds/inch
Rig Dimensions
I (Foretriangle Height) 2.25 ft / 0.69 m
P (Mainsail Luff) Diesel
E (Mainsail Foot) Yanmar
How It Compares

vs. Hallberg Rassy 34, Pearson 34, Southerly 100, Tartan 33

This boat Similar boats
Dimensions
LOA
Southerly 101 ★
33.8 ft
Hallberg Rassy 34
33.7 ft
Pearson 34
33.8 ft
Southerly 100
33.8 ft
Tartan 33
33.7 ft
LWL
Southerly 101 ★
25.0 ft
Hallberg Rassy 34
28.5 ft
Pearson 34
28.1 ft
Southerly 100
25.0 ft
Tartan 33
28.8 ft
Beam
Southerly 101 ★
10.3 ft
Hallberg Rassy 34
11.2 ft
Pearson 34
11.2 ft
Southerly 100
10.3 ft
Tartan 33
11.0 ft
Displacement
Southerly 101 ★
9 lbs
Hallberg Rassy 34
11 lbs
Pearson 34
11 lbs
Southerly 100
9 lbs
Tartan 33
10 lbs
Ballast
Southerly 101 ★
4 lbs
Hallberg Rassy 34
4 lbs
Pearson 34
4 lbs
Southerly 100
4 lbs
Tartan 33
4 lbs
Sail Area
Southerly 101 ★
Hallberg Rassy 34
592 sq ft
Pearson 34
550 sq ft
Southerly 100
509 sq ft
Tartan 33
531 sq ft
Performance
PHRF Rating (lower = faster)
Southerly 101 ★
Hallberg Rassy 34
Pearson 34
144 s/nm
Southerly 100
Tartan 33
153 s/nm
SA / Displacement (higher = more powerful)
Southerly 101 ★
Hallberg Rassy 34
18.5
Pearson 34
17.6
Southerly 100
17.7
Tartan 33
18.4
Ballast / Disp (higher = stiffer)
Southerly 101 ★
44.3 %
Hallberg Rassy 34
39.6 %
Pearson 34
Southerly 100
Tartan 33
Comfort Ratio (higher = more comfortable offshore)
Southerly 101 ★
Hallberg Rassy 34
24.0
Pearson 34
23.4
Southerly 100
25.1
Tartan 33
21.0
Capsize Screening (lower = safer)
Southerly 101 ★
Hallberg Rassy 34
1.98
Pearson 34
2.00
Southerly 100
1.91
Tartan 33
2.04
Displacement / Length (lower = lighter)
Southerly 101 ★
284
Hallberg Rassy 34
225
Pearson 34
Southerly 100
Tartan 33
Hull Speed
Southerly 101 ★
Hallberg Rassy 34
7.2 kts
Pearson 34
7.1 kts
Southerly 100
6.7 kts
Tartan 33
7.2 kts
Speed Number (higher = faster)
Southerly 101 ★
Hallberg Rassy 34
Pearson 34
2.5
Southerly 100
1.9
Tartan 33
3.0
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