Swan 391 Information, Review, Specs

Sailing Performance & Handling

The Swan 391 is defined by its powerful masthead sloop rig and a hull form that, while still bearing the hallmarks of IOR influence—such as a relatively narrow stern and a deep, high-aspect fin keel—provides a much more stable platform than its predecessor. With a displacement of approximately 18,700 lbs and a ballast-to-displacement ratio near 40%, the boat is notably stiff. Owners often describe the 391 as a "heavy-weather specialist" that finds its groove when the breeze climbs above 15 knots.

The steering is typically geared through a large-diameter destroyer wheel, providing the high-sensitivity feedback necessary for racing while maintaining the tracking stability required for long-distance cruising. Because it was designed during an era of large overlapping headsails, the 391 requires a physically capable crew or modern winch upgrades to manage the massive genoa, which serves as the primary engine in light to moderate air. According to technical archives from the Classic Swan Association, the boat was offered with two different draft options: a standard 7.2-foot deep keel and a shorter "shoal" version to accommodate different cruising grounds. Under sail, the 391 exhibits less of the "death roll" common in late-70s racers, thanks to Holland’s refinement of the hull’s underwater sections and a more balanced distribution of volume.

Interior Comfort & Variations

Inside, the Swan 391 is a masterclass in traditional joinery, featuring hand-rubbed Burmese teak that has become the brand's signature. The layout is optimized for offshore security, prioritizing handholds and a functional "U-shaped" galley that keeps the cook secure while the boat is heeled. The standard configuration includes a V-berth forward, a spacious main salon with a folding centerline table, and a dedicated navigation station that would be the envy of many modern 50-footers.

The primary evolution from the earlier Swan 39 is found in the aft sections. The 391 features a much more comfortable and private aft cabin, typically accessed via a walkthrough on the starboard side. While most hulls were finished with a standard layout, Nautor’s semi-custom nature meant that some owners opted for variations in storage or bunk configurations. Headroom is generous for a boat of this vintage, hovering around 6'3" in the main salon, and the integration of deck prisms and Lewmar hatches ensures the cabin remains ventilated and bright—a departure from the darker "cave" feel of earlier IOR designs.

Known Issues & Buyer’s Checklist

Prospective buyers should approach the Swan 391 with a rigorous inspection plan, as these vessels are now entering their fourth and fifth decades of service.

• Teak Deck Longevity: Like most Swans of this era, the teak decks were traditionally screwed and bedded in Thiokol. By this stage in their life, many 391s will either require a full deck replacement or have already undergone one. Persistent leaks from failing deck screws can lead to moisture in the balsa core, a high-cost repair.
• Mast Step and Grid Corrosion: The 391 utilizes a galvanized steel floor grid to distribute rig and keel loads. This grid must be inspected for signs of "rust jacking" or corrosion, particularly in the bilge areas where standing water may have sat over the years.
• Rod Rigging: Most 391s were delivered with Navtec rod rigging. Rod rigging has a finite fatigue life (often recommended for replacement every 10–15 years). If the standing rigging is original or of unknown age, it should be treated as a primary safety concern.
• Engine Serviceability: The original Bukh or Volvo Penta engines are robust but may suffer from parts scarcity or cooling system scaling. Buyers should also inspect the S-drive diaphragm, which requires periodic replacement to maintain hull integrity.

Community & Resources

The Swan 391 benefits from one of the most dedicated owner communities in the maritime world. The Classic Swan Association serves as the primary technical repository, offering original blueprints, sail plans, and a registry of hull numbers. This community is instrumental for owners seeking to maintain the boat to "Class" standards, which significantly aids in the vessel's resale value.

The Verdict

The Swan 391 is a connoisseur’s yacht, offering a level of build quality that is increasingly rare in the modern production market. It is an ideal choice for the sailor who prioritizes offshore capability and aesthetic beauty over the voluminous "condo-on-the-water" layouts of contemporary cruisers.

Pros:

• Exquisite Nautor build quality and timeless Ron Holland lines.
• Exceptional heavy-weather performance and a secure, sea-kindly motion.
• Strong resale value and a dedicated global support network.

Cons:

• High maintenance costs associated with aging teak decks and rod rigging.
• The large headsails and IOR-style deck layout can be physically demanding for short-handed crews.
• The narrow stern limits cockpit space and aft cabin volume compared to modern designs.