Southerly 330 Information, Review, Specs

Sailing Performance & Handling

The defining characteristic of the Southerly 330’s handling is its twin-rudder configuration, a design necessity that Stephen Jones turned into a performance advantage. Because the boat’s draft can be reduced to a mere 0.48 meters (1’7”), a single deep rudder was impractical; instead, the twin rudders are angled to provide exceptional "bite" and control even when the boat is heavily heeled. According to an editorial evaluation by Yachting Monthly, this setup allows the 330 to track straight with very little weather helm, even in gusty conditions.

Technically, the boat utilizes a massive cast-iron grounding plate that houses a swing keel made of lead and composite. With the keel fully extended to 2.21 meters (7’3”), the 330 exhibits a high ballast ratio and a low center of gravity, allowing it to point higher than almost any other coastal cruiser in its class. The Sail Area/Displacement ratio is generous enough to keep the boat moving in light airs, while the hull's broad stern sections provide the form stability needed for offshore passages. Owners often report that the boat feels "stiff" and secure, a sensation bolstered by the heavy grounding plate which acts as a structural backbone for the entire hull.

Interior Comfort & Variations

The interior of the Southerly 330 is a masterclass in the "deck saloon" philosophy, designed to provide the helmsman and crew with 360-degree visibility from the warmth of the cabin. This layout is particularly favored by those cruising in northern latitudes or unpredictable climates. The raised seating area to port allows passengers to see the horizon while dining, a feature rarely found on 33-foot yachts. The joinery is typically finished in American Cherry or Light Oak, maintaining the high standards of British craftsmanship associated with the Northshore yard.

The standard layout features a large aft cabin that extends under the cockpit sole, offering a level of headroom and berth size usually reserved for 36-footers. The forward cabin provides a traditional V-berth, while the linear galley to starboard is designed for use at sea, equipped with deep fiddles and ample bracing points. While the 330 was the primary production model, it is closely related to its sibling, the Southerly 32. While the 32 featured a more vertical transom and a slightly different cockpit arrangement, the 330's hull and internal structural grid paved the way for the later Southerly 35RS, which refined the aesthetic with more aggressive window lines and an even more modern sail plan.

Popular Mentions & Media

The Southerly 330 received significant attention from the European marine press upon its debut, often cited as the boat that proved "swing keels don't have to be slow." It was a regular feature in Practical Boat Owner and Yachting World during the late 2000s, where it was lauded for its versatility in the shallow estuaries of the British East Coast and the French canals. While not as common on the global racing circuit, the 330 has a strong presence in long-distance cruising vlogs and blogs focused on "creek crawling" and drying out in remote tidal harbors.

Known Issues & Buyer’s Checklist

Prospective buyers of a Southerly 330 should focus their due diligence on the specialized mechanical systems that make the boat unique. While Northshore's engineering is robust, these systems require specific maintenance:

• Keel Pennant and Hydraulics: The swing keel is raised via a hydraulic ram and a high-strength pennant. It is essential to check the service records for pennant replacement (typically every 5-7 years) and to inspect the hydraulic fluid for signs of contamination or leaks.
• Grounding Plate Sealant: The interface between the cast iron grounding plate and the GRP hull is a critical seal. Buyers should look for "weeping" or rust streaks at this joint, which may indicate that the sealant needs to be raked out and replaced.
• Rudder Bearings: Because the twin rudders are shorter and more exposed than a traditional skeg-hung rudder, the bearings can experience significant lateral load. Check for excessive play in the steering system.
• Keel Box Fouling: In some environments, marine growth or small stones can become trapped in the keel box. A diver's inspection or a lift-out is necessary to ensure the keel moves freely through its full range of motion.

Community & Resources

The primary hub for technical support and social interaction is the Southerly Owners Association (SOA). This group is highly active and maintains an extensive archive of technical manuals, modification guides, and a registry of hull numbers. The association is particularly valuable for new owners seeking advice on the specific nuances of the Stephen Jones-designed hulls and the maintenance of the Northshore-built swing keel mechanisms.

The Verdict

The Southerly 330 is a rare breed of yacht that refuses to compromise between the freedom of shallow-draft exploration and the thrill of a well-balanced sailing machine.

Pros

• Unrivaled Versatility: The ability to "beach" the boat and explore drying harbors opens up cruising grounds closed to fixed-keel vessels.
• Modern Performance: The Stephen Jones hull and twin-rudder setup offer superior handling compared to older variable-draft designs.
• Deck Saloon Visibility: Exceptional natural light and 360-degree views from the interior make for a comfortable living environment in all weather.

Cons

• Mechanical Complexity: The hydraulic swing keel requires more maintenance and vigilance than a standard fin keel.
• Prop Wash: Twin rudders mean there is no direct prop wash over the rudder blades, which can make tight-quarters maneuvering under power more challenging without a bow thruster.
• Premium Pricing: Due to their build quality and unique capabilities, Southerly 330s tend to hold their value well, commanding higher prices on the used market than similar-sized mass-production cruisers.