Southerly 49 — Information, Review, Specs

Rob Humphreys·2009 – 2013·Northshore Yachts
Southerly 49 drawingBuilder drawing
Hull type
Monohull · wing
Rig
Solent
LOA
49.57' · 15.11 m
Displ.
33,951 lbs · 15,400 kg
First year
2009

The Southerly 49 represents a pinnacle of the "goanywhere" philosophy established by Northshore Yachts. Designed by the renowned studio of Humphreys Yacht Design, this model was conceived to bridge the gap between a highperformance ocean voyager and a shallowdraft coastal explorer. Unlike many yachts of this size that are restricted by a deep fixed keel, the 49 utilizes the trademark Southerly swingkeel system, allowing it to transition from a deepwater draft of 3.12 meters (10’3”) to a mere 0.84 meters (2’9”). This capability allows a nearly 50foot yacht to navigate the same intracoastal waterways and shallow anchorages as a small daysailer, while still maintaining the righting moment and stability required for Category A ocean crossings.

Measurements

Dimensions 01

LOA
49.57 ft
LWL
44.98 ft
Beam
13.78 ft
Draft
10.33 ft
Max headroom
-
Air draft
-

Construction & hull 02

Construction
Fiberglass
Hull type
Monohull
Keel type
Wing
Rudder
2× —
Ballast
11530 lbs
Displacement
33951 lbs
Water
144 gal
Fuel
108 gal

Rig & sails 03

Rig type
Solent
P · main luff
-
E · main foot
-
I · fore ht.
-
J · fore base
-
Forestay (est)
-
Sail area
1399 sqft

Calculations 04

SA/D ratio
21.34
Ballast/Disp.
33.96
D/L ratio
166.55
Comfort ratio
34.41
Capsize screening
1.7
Hull speed
8.99 kn

Sailing Performance & Handling

The sailing characteristics of the Southerly 49 are defined by its variable geometry. With the keel fully lowered to over 10 feet, the boat exhibits exceptional upwind tracking and a high degree of stiffness, outperforming most fixed-keel production cruisers of similar displacement. The design features a twin-rudder configuration, which is essential for a hull that can be "beached." These rudders provide exceptional grip when the boat is heeled, ensuring that the helm remains light and responsive even in gusty conditions.

The sail area-to-displacement ratio is balanced for long-distance passage making. While the heavy grounding plate—a massive cast-iron assembly that protects the hull and houses the keel—adds significant weight low in the hull, it contributes to a comfortable, dampened motion in a seaway. According to technical assessments from the designer, the hull form was optimized for modern cruising speeds, utilizing a long waterline to maximize hull speed during offshore legs. When sailing downwind or in light airs, the ability to partially retract the keel reduces drag, a trick often reserved for racing multihulls or dinghies but successfully integrated here into a luxury cruising platform.

Interior Comfort & Variations

The Southerly 49 is a true deck saloon yacht, characterized by a raised seating area that offers 270-degree panoramic views of the horizon. This design choice is not merely aesthetic; it allows the watch-keeper to monitor the surroundings from the warmth of the cabin. The interior joinery is typically finished in high-quality veneers like American Cherry or Light Oak, reflecting the premium positioning of the Northshore shipyard.

Standard configurations usually feature a three-cabin layout. The master suite, located aft, spans the full beam of the vessel and includes a centerline queen berth and an en-suite head with a separate shower stall. The forward VIP cabin and a secondary guest cabin (often configured with bunk beds) share a second head. This model shares its DNA closely with its siblings, the Southerly 47 and the later Southerly 48. While the 47 was the precursor, the 49 provided an extended stern and more sophisticated hydraulic systems. The later 48, produced under the Discovery Yachts era, refined the interior ergonomics further but retained the core Humphreys hull lines found in the 49.

The Southerly range has been a frequent subject of editorial praise in major British maritime publications. The 49, specifically, was highlighted by Yachting Monthly (in reviews comparing it to the 47) as a masterclass in engineering complexity. The brand gained significant cultural traction through the "Distant Shores" sailing series, where cruisers Paul and Sheryl Shard documented their global travels aboard various Southerly models, demonstrating the practical reality of using a lifting keel to explore remote Caribbean and European shallows.

Known Issues & Buyer’s Checklist

Prospective owners of a Southerly 49 must prioritize the inspection of the lifting keel mechanism, as it is the vessel's most critical and complex system.

  • Keel Hydraulics and Pennants: The keel is operated via a heavy-duty hydraulic ram. Inspectors should check for fluid leaks, the age of the hydraulic hoses, and the condition of the stainless steel pennants or pins that secure the keel in the up or down positions.
  • Grounding Plate Corrosion: The cast-iron grounding plate is exposed to the elements. While robust, any breakdown in the epoxy coating can lead to "blooming" or significant rust scaling, which may require sandblasting and recoating.
  • Twin Rudder Bearings: Because the twin rudders are relatively exposed, they can experience lateral stress. Check for play in the rudder stocks and ensure the steering linkage is synchronized correctly.
  • Deck Saloon Windows: The large acrylic or glass panels in the saloon are subject to significant UV exposure and thermal expansion. Check for signs of crazing or seal failure, which can lead to leaks into the main living area.

Community & Resources

The primary hub for technical support and owner camaraderie is the Southerly Owners Association (SOA). This organization maintains an extensive technical library and a database of modifications specific to the Northshore-built models. They are the definitive source for sourcing legacy parts or advice on the unique maintenance requirements of the swing-keel system.

The Verdict

The Southerly 49 is a specialized tool for the sailor who refuses to choose between deep-sea performance and coastal intimacy. It is a complex machine that requires more maintenance than a standard fin-keel boat, but it rewards the owner with a cruising range that is geographically unmatched in the 50-foot monohull market.

Pros:

  • Unrivaled draft flexibility (under 3 feet with keel up).
  • Superior upwind performance due to a 10-foot-plus deep keel.
  • High-quality "Deck Saloon" visibility and interior light.
  • Strong secondary market value due to brand prestige.

Cons:

  • Complexity of the hydraulic keel system requires specialist knowledge.
  • Higher maintenance costs for the grounding plate and twin-rudder setup.
  • Heavier displacement may feel less "sparky" in very light winds compared to pure performance cruisers.

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