Cobra 1050 — Information, Review, Specs

David Feltham·1979·~60 hulls·Cobra Yachts
Approximate drawing

Hover a measurement to read its value

Hull type
Monohull · twin
Rig
Masthead Sloop
LOA
34.33' · 10.46 m
Displ.
12,500 lbs · 5,670 kg
First year
1979

The Cobra 1050 represents the pinnacle of David Feltham’s design work for the shortlived but prolific Cobra Yachts shipyard. Launched in the late 1970s as the flagship of the range, the 1050 was designed to provide the interior volume of a much larger vessel while maintaining the manageable handling characteristics required by a family crew. Unlike its smaller siblings, the 750 and 850, which were primarily coastal "pocket" cruisers, the 1050 was conceived as a true offshorecapable yacht. Its hull is characterized by a highvolume midsection and substantial freeboard, a design choice that prioritizes internal living space and secondary stability. Following the closure of Cobra Yachts in 1982, the molds were famously acquired by Seawolf Yachts, where the design continued production with minor modifications as the Seawolf 35.

Measurements

Dimensions 01

LOA
34.33 ft
LWL
30 ft
Beam
12 ft
Draft
5.5 ft
Max headroom
-
Air draft
-

Construction & hull 02

Construction
Fiberglass
Hull type
Monohull
Keel type
Twin
Rudder
1× —
Ballast
-
Displacement
12500 lbs
Water
75 gal
Fuel
30 gal

Rig & sails 03

Rig type
Masthead Sloop
P · main luff
-
E · main foot
-
I · fore ht.
-
J · fore base
-
Forestay (est)
-
Sail area
-

Calculations 04

SA/D ratio
Ballast/Disp.
D/L ratio
206.68
Comfort ratio
22.55
Capsize screening
2.07
Hull speed
7.34 kn

Sailing Performance & Handling

The Cobra 1050 is a heavy-displacement cruiser that prioritizes sea-kindliness and stability over raw speed. With a ballast ratio typically hovering around 35–40%, the boat is notably stiff, capable of carrying full sail well into a Force 4 before requiring a reef. According to technical archives from the Cobra and Seawolf Owners Association, the vessel was offered with two main underwater profiles: a deep fin keel for improved windward performance and a twin (bilge) keel version designed for the drying harbors of the UK’s South and East coasts.

On the water, the 1050 feels deliberate and secure. The David Feltham hull shape features a relatively fine entry that transitions into a wide beam carried well aft, which helps the boat track well when reaching. However, the high freeboard and substantial coachroof profile create significant windage; in light airs, the 1050 can feel sluggish, and it requires a dedicated cruising chute or a large genoa to maintain momentum. When the wind picks up, the boat finds its stride, offering a predictable, "dry" ride as the flared bow deflects spray effectively. It is not a yacht for the club racing circuit, but for a navigator crossing the English Channel or the North Sea, its predictable motion in a seaway is a significant asset.

Interior Comfort & Variations

The interior of the Cobra 1050 was considered revolutionary for its time, offering a level of "tardis-like" space that challenged the contemporary offerings from larger builders like Westerly or Moody. The standard layout features a spacious main saloon with a U-shaped settee to starboard and a linear settee to port, providing ample seating for six adults. A defining characteristic of the 1050 is the generous headroom, which remains consistent through much of the cabin, catering to taller sailors who often struggle in 34-footers of this vintage.

Accommodation is typically split into a forward V-berth cabin and a dedicated aft cabin or large quarter berth, depending on the specific year of manufacture. The galley is generally positioned to starboard at the base of the companionway, featuring a deep sink and ample stowage for extended victualing. Because Cobra Yachts sold a significant number of these vessels as "kit boats" for home completion, the quality and configuration of the interior can vary wildly between hulls. Some owners opted for high-end teak joinery and professional upholstery, while others utilized more utilitarian plywood finishes. Potential buyers should also note the transition to the Seawolf 35; while the hull remained the same, the Seawolf versions often featured a revised deck mold and a more modernized interior layout, frequently including a more private aft cabin arrangement.

Known Issues & Buyer’s Checklist

  • Hull Osmosis: Like many GRP yachts built in the late 1970s, Cobra 1050s are susceptible to osmotic blistering. While rarely structural, hulls that have not undergone a professional epoxy treatment may require significant bottom work.
  • Kit-Built Variability: Because many 1050s were completed by their first owners rather than the factory, the quality of the electrical wiring, plumbing, and gas installations must be scrutinized. Non-standard fuse panels or amateurish joinery are common "gotchas" that can complicate insurance surveys.
  • Engine Service Life: Many original units were fitted with Bukh or Yanmar diesel engines. Given the age of these vessels, many have reached the end of their reliable service life. A documented engine replacement or a rigorous professional compression test is essential.
  • Deck Core Integrity: The deck is a sandwich construction. Buyers should check for "soft spots" or delamination, particularly around high-load areas like the mast step, stanchion bases, and the windlass, where water ingress can rot the core over decades.
  • Chainplate Inspection: The shroud attachments (chainplates) are known to be robust, but the sealant around the deck penetrations can fail, leading to slow leaks that may damage the bulkheads below.

Community & Resources

The primary hub for technical support and historical documentation is the Cobra and Seawolf Owners Association. This organization maintains a repository of original brochures, sail plans, and technical advice specifically for the Feltham-designed range. The association is instrumental in helping owners identify whether their specific hull was factory-finished or a home-build project, and they provide a network for sourcing spare parts for the unique cast-iron keels used on the 1050.

The Verdict

The Cobra 1050 is a quintessential "honest" cruiser—a boat that trades sleek aesthetics for immense internal volume and a secure, upright sailing experience. It remains one of the most cost-effective ways to acquire a 34-foot offshore-capable yacht with enough room for a full family.

Pros:

  • Exceptional interior volume and headroom for its length.
  • Sturdy, heavy-weather performance with a stiff sailing attitude.
  • Versatile keel options, including a capable bilge keel variant for shallow drafts.
  • Strong community support through a dedicated owners' association.

Cons:

  • High windage can make close-quarters maneuvering under power challenging.
  • Significant variability in interior finish due to the prevalence of kit-built boats.
  • Dated deck hardware and original engines often require immediate capital investment.

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