Southerly 115 Information, Review, Specs

Sailing Performance & Handling

The sailing dynamics of the Southerly 115 are defined by its dual identity as a shallow-draft explorer and a stable offshore cruiser. With the keel fully deployed, the 115 exhibits a surprising amount of lift and tracking ability, aided by the deep 2.49-meter extension that provides a higher aspect ratio than many fixed-keel cruisers of its era. According to editorial testing by Yachting Monthly, the boat is notably stiff once the wind picks up, largely due to the massive weight of the internal ballast and the cast-iron grounding plate, which keeps the center of gravity low even when the keel is retracted.

Under sail, the boat is not a light-air racer; its displacement-to-length ratio suggests a hull that prefers a stiff breeze to get moving. In heavy weather, the ability to partially retract the keel can be a tactical advantage, moving the center of effort and reducing the risk of "tripping" over the keel in large breaking seas. However, helm feel is reported to be somewhat dampened by the mechanical complexity of the twin-rudder system (found on later marks) or the high-volume hull. While it tracks well upwind with the keel down, its performance off the wind is where it truly shines, as the keel can be raised to reduce drag, allowing the boat to surf comfortably in following seas.

Interior Comfort & Variations

The Southerly 115 is celebrated for its "deck saloon" or pilothouse layout, which was ahead of its time in the 1980s. The interior is split into distinct levels, providing a sense of space rarely found in 38-foot yachts of that vintage. The raised seating area in the saloon offers panoramic views through large toughened glass windows, a feature that significantly reduces the "cave-like" feeling of traditional monohulls and allows the crew to monitor the surroundings while sheltered from the elements.

Over its long production run, Northshore introduced several iterations. The original Mark I featured a more traditional woodwork style and often included an internal steering station, though this was frequently omitted in later models to gain more living space. The Mark II and Mark III versions saw the introduction of a "sugar scoop" transom, which lengthened the waterline and improved access to the water. The master cabin, located aft, is a standout feature for a boat of this size; it typically offers a large double berth and dedicated head access. The forward cabin and convertible saloon berths allow the 115 to accommodate up to six or seven people, though it is most comfortable as a long-term home for a couple. High-quality joinery—usually in teak or cherry—was a hallmark of the Northshore yard, and these interiors tend to age gracefully if well-maintained.

Known Issues & Buyer’s Checklist

Prospective buyers of a Southerly 115 should prioritize the inspection of the keel mechanism, as it is the vessel's most critical and complex system. The primary "gotcha" involves the keel pennants (the stainless steel cables used to raise and lower the keel). These are wear items that require periodic replacement; if they snap, the keel can drop violently, potentially damaging the housing.

The pivot pin, which secures the keel to the grounding plate, is another high-signal area for inspection. Over decades of use, the bushings can wear, leading to a "thumping" sound when the boat is at anchor or sailing in a swell. While the grounding plate itself is incredibly robust, it is made of cast iron and is susceptible to rust if the protective epoxy coatings are not maintained. Buyers should also check the seal around the large deck saloon windows; older models may develop leaks that can damage the joinery below. Finally, because many Southerlys have been used for "beaching," the hull bottom and the integrity of the twin rudders (on later models) should be checked for impact damage or stress fractures.

Community & Resources

Owners of the 115 benefit from one of the most active and technically proficient owner groups in the maritime world. The Southerly Owners Association (SOA) is an essential resource, maintaining a vast archive of technical manuals, keel repair guides, and historical brochures. The association also organizes rallies and provides a forum where owners share specific advice on maintaining the Dick Carter-designed systems. For those looking for historical context or manufacturer support, the brand's integration into the Discovery Yachts Group (and later acquisitions) means that while the original Northshore yard has changed hands, the legacy of the design remains well-documented within the UK boat-building community.

The Verdict

The Southerly 115 remains a premier choice for sailors who refuse to be limited by the depth of the water. It is a rugged, thoughtful cruiser that trades pure racing speed for unparalleled coastal flexibility and interior volume.

Pros:

• Extreme Versatility: The 2' 4" minimum draft allows for navigation in areas off-limits to almost all other monohulls.
• Safety and Stability: The heavy grounding plate provides a solid "skid" for beaching and contributes to a high righting moment.
• Livability: The raised deck saloon and spacious aft cabin make it an excellent choice for liveaboards.

Cons:

• Mechanical Complexity: The swing-keel system requires more maintenance and vigilance than a fixed keel.
• Weight: It is a heavy displacement boat that can feel sluggish in light winds (under 10 knots).
• Maintenance Access: In some configurations, the internal steering linkages and keel housing can make engine or plumbing access cramped.