Gib'Sea 77 Sailboat Review, Specs, and Listings

Groupe Graal/Jean-Claude Meyran·1979 – 1984·~224 hulls·Gilbert Marine
Approximate drawing

Hover a measurement to read its value

Hull Type
Monohull · centerboard
Rig
Masthead Sloop
LOA
26.08' · 7.95 m
Disp.
3,968 lbs · 1,800 kg
First year
1979

The Gib'Sea 77 is a 26foot coastal cruiser built in France by Gilbert Marine between 1979 and 1984. Naval architecture is credited to JeanClaude Meyran and the Groupe Graal design partnership. Yachting Monthly dates its introduction to 1980 and says the Gib'Sea 76 superseded it in 1984.

Measurements

Dimensions 01

Length Overall
26.08 ft
Length on deck
—
Waterline Length
22.64 ft
Beam
9.19 ft
Draft
5.81 ft
Maximum Headroom
5.75 ft
Air Draft
—

Construction & hull 02

Construction
Fiberglass
Hull Type
Monohull
Keel Type
Centerboard
Rudder
1× —
Ballast
1,620 lbs (Iron)
Displacement
3,968 lbs
Water Capacity
21 gal
Fuel Capacity
7 gal

Rig & sails 03

Rigging Type
Masthead Sloop
Mainsail luff
—
Mainsail foot
—
Foretriangle height
—
Foretriangle base
—
Forestay Length (estimated)
—
Sail Area
375.12 sqft

Calculations 04

Sail Area to Displacement Ratio
23.94
Ballast to Displacement Ratio
40.83
Displacement to Length Ratio
152.65
Comfort Ratio
13.5
Capsize Screening Ratio
2.32
Hull Speed
6.38 kn

The two principal records disagree on production: one cites 224 examples, while the other gives 438. Both, however, describe a compact monohull intended for family sailing rather than competition. One period review states explicitly that the design isn’t suited to racing.

Design and Construction

The Gib'Sea 77 is a polyester cruising monohull. One record lists an overall length of 7.68 m and a width of 2.80 m. Yachting Monthly gives an LOA of 26ft 2in (8m), an LWL of 22ft 8in (6.9m), a beam of 8ft 2in (2.5m), and a displacement of 2,688 lb (1,222 kg).

As with other Gib'Sea models from the period, the deck and hull fittings were lightweight. Yachting Monthly identified this as a characteristic of the marque at the time, rather than a weakness peculiar to the Gib'Sea 77.

Rig, Handling, and Machinery

The Gib'Sea 77 has a masthead sloop rig. Both sources describe her as light and easy to handle, qualities that suit a couple or family sailing on sheltered water. According to the review, auxiliary power comes from a modest 8 horsepower diesel.

Sheets and halyards lead back to the cockpit, allowing the crew to trim from beneath the companionway and reducing the need to go forward under way—a useful feature for short-handed family crews.

The centerboard-keel version draws between 0.87 m and 1.77 m. That range allows access to shallow harbors while providing greater draught when sailing offshore in a breeze. Yachting Monthly considered the boat a good family coastal cruiser, although the same record warns that she wasn’t built for the racecourse.

Accommodation

Accounts of the interior differ. One describes the Gib'Sea 77 as a sporty four-berth cruiser. Another says she can sleep up to six in two cabins and a convertible saloon, with a berth tucked aft of the galley and an enclosed heads aft. Headroom reaches 1.75 meters.

The sources also conflict over the sanitary arrangements. The French review states plainly that there is no toilet or bathroom, while Yachting Monthly records an enclosed heads aft. The difference may reflect a particular version or refit, but a buyer should verify the arrangement in person.

Neither source mentions a chart table, and Yachting Monthly notes its absence directly.

Tankage and Intended Use

The boat carries an 80-liter fresh water tank and 7 gallons of diesel. Those capacities point toward straightforward weekend use rather than long-distance passage-making.

Known Issues and Ownership

Owners of the 1982 ballasted-dinghy version report a recurring problem: the daggerboard regularly gets stuck. This complaint applies specifically to the ballasted-dinghy configuration rather than the standard cruising-keel models. Even so, it is the only documented operational grievance in the record and is worth checking on any centerboard example.

Production ended in 1984, leaving only a few hundred hulls afloat. Today, the Gib'Sea 77 occupies a modest place on the used coastal-cruiser market. Because the original fittings were lightweight, later owners have often needed to tighten or replace deck hardware.

Verdict

The Gib'Sea 77 is a small, light, approachable coastal cruiser from the late-1970s French production scene. It is best understood as a family boat for day sailing and weekends rather than as a racer or offshore voyager.

Its centerboard versatility and cockpit-led controls make it well suited to shallow estuaries and short-handed sailing. Against that, the conflicting accounts of the heads arrangement and the lightweight original fittings call for a careful survey.

Pros

  • Light, easy handling
  • Sheets and halyards led back to the cockpit
  • Centerboard keel provides shallow-draught access and greater draught when lowered
  • Sleeps four to six in a compact, simple layout
  • Enclosed heads or no heads, depending on the version described

Cons

  • Not suited to racing, according to a period review
  • Lightweight original fittings, typical of Gib'Sea models from the period
  • Daggerboard on the ballasted-dinghy version is prone to sticking
  • Conflicting records on toilet and bathroom provision

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