Sonata 6.7 Information, Review, Specs

Sailing Performance & Handling

The Sonata 6.7 is widely regarded for its "big boat" feel despite its 22-foot length. It utilizes a ballasted swing keel—typically a heavy cast-iron blade—which provides a low center of gravity when deployed, allowing the boat to carry its sail area with more authority than many lighter dinghy-style trailer sailers. This ballast configuration results in a relatively high displacement-to-length ratio for its class, which translates to a steady, predictable motion in a chop.

Under sail, the 6.7 is balanced and responsive. Owners frequently report that the boat tracks well upwind, provided the keel is fully locked down and the sails are properly trimmed. According to historical technical reviews in Australian yachting periodicals, the boat exhibits a slight weather helm as the breeze increases, serving as a natural safety mechanism to head the boat into the wind during gusts. While it is not a pure "skiff-style" racer, it remains highly competitive in Class 2 trailer sailer divisions. The fractional rig allows for fine-tuned control over mast bend and mainsail shape, making it an excellent platform for sailors looking to sharpen their technical skills without the intimidation of a larger keelboat.

Interior Comfort & Variations

For a vessel of its dimensions, the Sonata 6.7 offers a surprisingly ergonomic interior. The layout typically features a "V-berth" forward, a compact galley area with a sink and stove to port, and a dinette that can often be converted into an additional berth. A defining characteristic of the 6.7 is its "pop-top" roof, a common feature in Australian designs of this era which significantly increases standing headroom while at anchor.

The boat was produced in several iterations, most notably the "Mk I" and "Mk II" variants. The later models often saw improvements in interior molding and the integration of more modern materials. In terms of siblings, the Sonata 6.7 shares much of its DNA with the Sonata 6.3 and the larger Sonata 7. While the 6.3 is more focused on ease of launching, the 6.7 provides significantly more volume in the cabin, making it the preferred choice for small families. The woodwork is generally teak or mahogany plywood, which, when well-maintained, gives the cabin a warm, traditional nautical ambiance that belies its fiberglass construction.

Popular Mentions & Media

The Sonata 6.7 has maintained a robust presence in the Australian "Trailer Sailer" movement, a cultural phenomenon that peaked in the late 20th century. The model is a frequent subject of technical discussion within the Trailer Sailer Association of Australia, where it is often cited as a benchmark for versatility. While it has not been the primary subject of major cinematic works, it is a staple of regional regattas, such as the Marlay Point Overnight Race, where Sonatas frequently feature in the top rankings of their respective divisions.

Known Issues & Buyer’s Checklist

Prospective buyers should approach a Sonata 6.7 with a specific focus on the mechanical and structural integrity of its lifting components.

1. Keel Bolt and Pivot Pin: The pivot pin for the swing keel is a critical wear point. Over decades, the hole in the cast iron can become elongated, leading to "clunking" sounds while at anchor or under sail. Inspecting the pin and the surrounding fiberglass trunk for stress fractures is essential.
2. Keel Winch and Cable: The manual winch and stainless steel cable used to raise the keel are subject to corrosion. If the cable snaps, the keel can drop violently, potentially damaging the hull. Buyers should verify the age of the cable and the serviceability of the winch brakes.
3. Deck Core Integrity: Like many production boats of this era, the Sonata 6.7 utilizes a balsa or foam sandwich construction for the deck. Soft spots around the chainplates, stanchion bases, or the mast step indicate water ingress and delamination, which can be a costly repair.
4. Transom and Outboard Bracket: The transom may show signs of flexing if it has been used with an outboard motor heavier than the design specifications. Check for "spiderweb" gelcoat cracks around the motor mount.

Community & Resources

The Sonata 6.7 benefits from one of the most active owner communities in the Southern Hemisphere. The Sonata Yacht Association of Australia provides a wealth of technical knowledge, historical brochures, and rigging guides. These associations are instrumental in maintaining the resale value of the fleet and organizing class-specific racing events that keep the model relevant in the modern era.

The Verdict

The Sonata 6.7 remains a premier choice for sailors who require a trailerable boat that does not compromise on safety or overnight comfort. It strikes an admirable balance between being a capable club racer and a forgiving family cruiser.

Pros:

• Ease of Transport: Well-suited for towing and launching by two people.
• Sturdy Build: More substantial and "sea-kindly" than many modern lightweight equivalents.
• Active Class: Strong community support and readily available second-hand parts.
• Versatile Draft: The lifting keel allows for access to secluded beaches and shallow estuaries.

Cons:

• Keel Maintenance: The swing keel mechanism requires more diligent upkeep than a fixed keel.
• Age: Most hulls are 30+ years old and may require significant cosmetic or structural refitting.
• Weight: Heavier than some contemporary 22-footers, requiring a more powerful towing vehicle.