Design Brief & Intent
The primary mandate behind the Cobra 1050 was to challenge the mid-size cruising market dominated in the late 1970s and early 1980s by UK giants like Westerly Marine and Moody Yachts. To achieve this, Feltham drew a hull with a highly generous 12-foot beam and substantial freeboard, resulting in an exceptionally spacious interior that earned a "tardis-like" reputation among contemporary reviewers.
The interior design is centered around a massive main saloon. It features a large U-shaped settee to port (which easily converts to a double berth) and a linear settee to starboard. The layout also includes a dedicated forward-facing navigation station, a well-proportioned aft galley, and a private V-berth cabin forward. The interior headroom remains consistently high throughout, providing comfortable standing room for taller sailors who typically find themselves cramped in 34-footers of this era.
A critical factor for potential buyers to note is that Cobra Yachts offered the 1050 both as a fully factory-finished yacht and as a "kit boat" for owner completion. As a result, the standard of interior joinery, bulkhead bonding, and system installation varies considerably across the secondhand fleet. While factory hulls boast high-quality teak or mahogany finishes, kit-completed boats range from exquisite custom woodwork to highly utilitarian, amateur plywood installations.
Variations & Configurations
The Cobra 1050 was designed with two distinct underwater profiles to suit different cruising grounds. The most common configuration found in the UK and Northern Europe is the twin (bilge) keel version. This setup features heavily ballasted twin keels designed to let the boat dry out upright—an essential feature for the shallow, tidal harbors of the English Channel and East Anglia. For owners seeking better pointing ability and reduced drag, a deep fin keel variant was also produced.
Rigged as a robust masthead sloop, the boat carries a large foretriangle that relies on a substantial genoa to drive the heavy hull. Accommodation variations are primarily found in the aft sections; early models utilized a large, open quarter berth and an expansive cockpit locker, while later factory models and Seawolf 35 descendants utilized the hull volume to incorporate a more private, dedicated aft cabin.
Sailing Performance & Handling
The sailing characteristics of the Cobra 1050 reflect its design as a heavy-displacement cruiser rather than a racing yacht. With a displacement of 12,500 lbs, the boat features a Displacement-to-Length (D/L) ratio of 206.68. This places the 1050 in the moderate displacement category, providing a stable, reassuring, and "dry" ride as the flared bow deflects chop effectively. This is further reinforced by a Comfort Ratio of 22.55, ensuring that the motion in a seaway is deliberate and gentle rather than quick and tiring.
A Capsize Screening Ratio of 2.07 indicates that the hull's wide beam contributes heavily to its initial stability. However, because this value sits slightly above the traditional offshore racing limit of 2.0, the boat is widely characterized as a superb coastal and regional passageway cruiser rather than an extreme-latitude expedition vessel. Under sail, the 1050 is notably stiff, carrying full canvas comfortably into Force 4 winds before needing a reef. The trade-off for this stability and high windage is sluggish performance in light airs, where a cruising chute or genoa is vital to maintain momentum.
Market Snapshot & Economics
On the contemporary brokerage market, the Cobra 1050 represents an exceptionally high-volume, cost-effective option for sailors seeking a 34-foot cruiser. It typically trades at a modest discount compared to similar-era Westerly Fulmars or Moody 33s, primarily due to the brand's shorter production run and the historical prevalence of kit-finished hulls.
Because the fleet is relatively small—with around 60 hulls produced under the Cobra name—they are not exceedingly common, but they regularly appear in UK and European waters. Prospective buyers must approach the pricing of these vessels with a critical eye toward the vessel's build history and engine status, as amateur interior finishes and original, tired drivetrains can quickly negate any initial savings. Support for the fleet remains active through the Cobra and Seawolf Owners Association, which serves as a valuable resource for technical advice and original structural drawings.
Known Issues & Triage
- Kit-Built Inconsistencies: Because a portion of the fleet was sold for home completion, surveyors frequently discover sub-standard electrical wiring, poorly supported plumbing lines, and non-compliant gas installations. A dedicated systems survey is highly recommended to assess the safety of these setups.
- Osmosis Susceptibility: Like many fiberglass hulls molded in the late 1970s and early 1980s, the GRP layup of the Cobra 1050 is prone to osmotic blistering. While rarely structural, buyers should inspect the hull below the waterline for signs of blistering and check if a preventative epoxy barrier coat has been applied.
- Deck Core Wetness: The deck is constructed as a sandwich structure. Over decades, improperly sealed stanchion bases, cleat backings, and mast-step fittings can allow water to migrate into the core. This causes localized soft spots or delamination that require recoring.
- Aging Original Drivetrains: Many Cobra 1050s left the factory with Bukh DV20 or DV24 diesel engines. While these twin-cylinder units are legendary for their durability, they are increasingly reaching the end of their operational lifespan, and sourcing replacement parts is becoming difficult.
Modernization & Upgrades
Modernizing a Cobra 1050 typically starts in the engine room. Veteran owners frequently replace the heavy, original 20-horsepower Bukh engines with modern, lighter 30-to-35-horsepower diesels—such as the Beta Marine Beta 35—which provide the extra power needed to push the high-windage hull into head seas.
Due to the boat's massive interior space, it has also become a prime candidate for modern battery bank upgrades. Owners are increasingly replacing older lead-acid setups with LiFePO4 (lithium iron phosphate) house batteries, capitalizing on the generous under-berth spaces to install high-capacity systems capable of running refrigeration, modern navigation suites, and even small induction cooktops without requiring a generator.
The Verdict
The Cobra 1050 is an honest, robust, and highly capable cruiser that punches well above its length in terms of interior volume and livability. For cruising families who value safety, comfort, and the ability to dry out in shallow harbors, this David Feltham classic remains one of the best value-for-money options on the secondhand market.
Pros
- Exceptional interior volume and standing headroom for a 34-foot hull.
- Stiff and reassuring heavy-weather sailing characteristics.
- Capable twin-keel options allow for drying out in tidal harbors.
- Active and supportive community through the Cobra and Seawolf Owners Association.
Cons
- Sluggish sailing performance in light wind conditions due to high displacement and windage.
- Wide variation in interior build quality due to the prevalence of kit-finished hulls.
- High susceptibility to gelcoat osmosis if not previously treated with epoxy.
- Original Bukh engines are underpowered and increasingly difficult to service.
