Southern Cross 39 Information, Review, Specs

Sailing Performance & Handling

The Southern Cross 39 is defined by its heavy-displacement characteristics, carrying a Displacement/Length (D/L) ratio of approximately 315. In practical terms, this allows the vessel to "shoulder" aside heavy seas rather than hobby-horsing over them, a trait noted in Sailing Magazine’s technical evaluations of Gillmer's double-ended designs. While its Sail Area/Displacement ratio of 16.33 suggests moderate performance, the boat is surprisingly capable in a breeze. It utilizes a cutter rig with a self-tacking staysail, which provides a versatile and easily handled sail plan for short-handed crews.

The hull features a cutaway forefoot and a long fin keel with a skeg-hung rudder, a configuration that strikes a balance between the rock-solid tracking of a full-keel boat and the maneuverability required for tight harbor docking. According to technical specs provided by the Southern Cross Owners Association, the boat's hull speed is approximately 7.4 knots. Early models featured a V-drive transmission with an exposed propeller, while later iterations moved the prop into an aperture in the rudder for better protection against lobster pots and debris.

Interior Comfort & Variations

The interior of the Southern Cross 39 is often likened to an "English library" due to its extensive use of high-quality wood joinery—typically cherry or teak—and raised-panel cabinetry. With a beam of 12' 1" and a headroom of up to 6' 6" in the main salon, the living space is voluminous for a traditional double-ender. The standard layout includes a spacious V-berth forward with its own storage locker, a U-shaped galley to starboard, and a dedicated navigation station to port.

A critical distinction for potential buyers is the "Factory vs. Kit" status. The first 13 or 14 hulls were factory-finished by C. E. Ryder to a very high standard. Subsequent hulls were often sold as kits for owner completion. While many kit-built boats (sometimes referred to as "Gillmer 39s") were finished to professional standards, interior quality can vary significantly between individual vessels. Refitted examples, such as the well-documented SC39 "Grace," showcase the boat's capacity for luxury, including dedicated separate refrigerator and freezer compartments and climate control.

Popular Mentions & Media

The most storied Southern Cross 39 is arguably hull #1, "Navstar." In 1980, explorer Marvin Creamer commissioned this specific factory-finished hull to test his theory that ancient mariners could navigate long distances without instruments. Creamer successfully completed a transatlantic voyage from the U.S. to West Africa using only celestial observations and natural signs, a feat detailed by the Pacific Marine Foundation. The boat has also seen significant action in the South Pacific, with notable voyages logged by SCOA members like John and Mary Hallinan aboard their SC39, "Horizons."

Known Issues & Buyer’s Checklist

While the Southern Cross 39 is a robustly built vessel, the following areas require careful inspection:

• Deck Core Saturation: While the hull uses closed-cell Airex, the decks are typically balsa-cored. Buyers should use a moisture meter around stanchion bases, chainplates, and the mast step, as hardware re-bedding was a common maintenance oversight in older units.
• Chainplate Leaks: Original chainplates were bedded in a way that can allow water to seep into the cabinetry over decades. Owners recommend a thorough inspection of the cherry bulkheads behind the settee for water staining.
• V-Drive Maintenance: On early models (pre-aperture), the V-drive configuration can make engine alignment more complex and creates an exposed prop that is vulnerable to fouling.
• Tankage Access: Fuel and water tanks are often located deep in the bilge or under the cabin sole. If they are the original aluminum or stainless steel units, check for pitting or corrosion, as replacement often requires significant joinery work.

Community & Resources

The primary hub for this model is the Southern Cross Owners Association (SCOA), which maintains a deep archive of technical newsletters, repair tips, and original marketing brochures. The community is highly active, hosting annual rendezvous in Newport, Rhode Island, and providing a technical wiki for owners dealing with the nuances of C. E. Ryder’s construction methods.

The Verdict

The Southern Cross 39 is a "sailor’s sailboat" designed for those who measure progress in days rather than hours and value the safety of a heavy, insulated hull.

Pros:

• Insulated Hull: The Airex core provides superior temperature control and a quiet ride.
• Offshore Pedigree: Proven circumnavigator with excellent heavy-weather stability.
• Aesthetic Appeal: Classic Thomas Gillmer lines that remain timeless.
• Headroom: Exceptional 6' 6" clearance in the salon is rare for this vintage.

Cons:

• Kit Variations: Significant quality differences between factory-finished and owner-finished hulls.
• Maneuverability: Like most heavy double-enders, she can be difficult to back up in a straight line under power.
• Light Air Performance: Requires a significant breeze to overcome her 21,000-pound displacement.