Gib'Sea 35-1 Information, Review, Specs

Gib'Sea 35-1 Drawing
Make
Gib'Sea
Model
35-1
Builder
Gibert Marine
Designer
Philippe Harlé
Number Built
Production Year(s)
1977 - ??

The Gib’Sea 35, and its slightly later iteration the 352, represents a significant chapter in the history of Gibert Marine. Launched in the mid-1980s, this model was designed by the prolific naval architecture firm Joubert-Nivelt, a partnership renowned for balancing the aesthetic requirements of French production boats with hulls capable of competitive offshore performance. The boat was positioned as a robust family cruiser, bridging the gap between the smaller coastal cruisers and the larger offshore "Master" series. It arrived at a time when French boatbuilding was transitioning toward high-volume production, yet the 35-1 maintains a level of structural heft and woodwork quality that predates the more minimalist interiors of the late 90s. Built in Marans, France, the hull features a solid fiberglass laminate below the waterline, a characteristic that has contributed to its longevity on the second-hand market.

Sailing Performance & Handling

The Gib’Sea 35 is widely regarded as a "stiff" and predictable performer, largely due to a conservative ballast ratio that hovers around 34%. With a displacement of approximately 11,000 lbs (around 5,000 kg) and a substantial fin keel, the boat handles chop with more grace than many modern, lighter-displacement cruisers of the same length. While it is not a dedicated light-air racer, the Joubert-Nivelt hull shape—featuring a relatively narrow beam by modern standards and a deep-chested section—allows it to track exceptionally well on a beat.

Under sail, the 35-1 feels balanced, though it can develop significant weather helm if over-canvased, a trait often noted in contemporary reviews from the era. Owners frequently report that the boat "finds its groove" at about 15 knots of true wind, where the hull's stability allows it to carry a full main and genoa comfortably. The steering, typically a wheel-governed cable system, provides adequate feedback, though many units have been retrofitted with modern bearings to sharpen the response. The boat’s tracking is aided by a semi-balanced spade rudder which, while providing good maneuverability in tight marinas, requires a vigilant eye during surveys for internal moisture.

Interior Comfort & Variations

The interior of the Gib’Sea 35 is a hallmark of 1980s French design, prioritizing warmth through the extensive use of teak veneers and solid wood trim. The model was produced in two primary configurations: the standard Gib’Sea 35 (often referred to as the "Owner" version) and the Gib’Sea 352. The 35 features a two-cabin layout with a large, dedicated navigation station and a cavernous head compartment located aft, which was highly progressive for its time.

The sibling model, the Gib’Sea 352, was designed primarily for the burgeoning Mediterranean charter market. It utilized the same hull but squeezed a third cabin into the aft section. While this increased the sleeping capacity to six or eight, it significantly reduced the size of the head and the cockpit locker storage. Both versions share a linear or L-shaped galley (depending on the specific production year) equipped with a double sink and a top-loading icebox. Headroom is a notable strength of this design, remaining generous—roughly 6’2”—throughout the main salon, which contributes to an airy, voluminous feel that belies the boat's 35-foot length.

Known Issues & Buyer’s Checklist

Prospective buyers of a Gib’Sea 35 should focus on the technical realities of 40-year-old fiberglass and French engineering:

  1. Headliner Sag: Like many French boats of this vintage (including Jeaneau and Beneteau models of the 80s), the foam-backed vinyl headliner is prone to adhesive failure. Replacing this is a labor-intensive "DIY" project or a costly professional one.
  2. Chainplate Reinforcement: Inspection of the stay attachments is critical. Some owners have reported hairline cracks in the fiberglass reinforcement around the chainplates under heavy load; ensure the load-bearing bulkheads are still securely glassed to the hull.
  3. Osmotic Blistering: While Gibert Marine used high-quality resins, boats from this era are susceptible to osmosis. A moisture meter test on the hull below the waterline is mandatory, especially if the boat has spent its life in warmer waters.
  4. Engine Access and Age: Many original units were fitted with Volvo Penta 2003 or Perkins Perama engines. While reliable, parts for the Volvo 2000 series are becoming increasingly expensive and difficult to source. Check the heat exchanger for scale buildup and the saildrive diaphragm (if equipped) for its replacement date.
  5. Grid Matrix Bonding: Check the bilge for any signs of the internal "grid" or floor stringers separating from the hull, which can occur after a significant grounding.

Community & Resources

While there is no longer a factory-backed organization for the brand, the Joubert-Nivelt Design office remains a point of historical reference for the architectural pedigree of these vessels. Technical support is largely decentralized, found within broader French sailing associations or through the Association des Propriétaires de Gib'Sea, which, while primarily Francophone, remains the most authoritative source for original technical drawings and rigging specifications.

The Verdict

The Gib’Sea 35 is an overbuilt, honest cruiser that offers more "big boat" feel than its 35-foot designation suggests. It is an ideal choice for a coastal cruiser or a couple looking for an affordable offshore-capable vessel that hasn't been lightened for the sake of modern marina-hopping.

Pros:

  • Excellent hull strength and sea-kindly motion in heavy weather.
  • Spacious, classic interior with high-quality woodwork.
  • Versatile layouts (2-cabin vs 3-cabin) to suit either owners or families.
  • Predictable handling under both power and sail.

Cons:

  • Aging 1980s systems (plumbing/electrical) often require a total refit.
  • Common headliner failure can be an aesthetic nuisance.
  • Performance in very light winds is sluggish compared to modern plumb-bow designs.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Fin
Rudder
1x Skeg-Hung
Ballast
4189 lbs
Displacement
11685 lbs
Water Capacity
74 gal
Fuel Capacity
41 gal

Dimensions

Length Overall (LOA)
34.45 ft
Waterline Length (LWL)
26.25 ft
Beam
11.32 ft
Draft
5.9 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Ketch
P (Main Luff)
35.67 ft
E (Main Foot)
12.5 ft
I (Foretriangle Height)
40.33 ft
J (Foretriangle Base)
12.75 ft
Forestay Length (est)
42.3 ft
Sail Area
486 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
15.1
Ballast / Displacement Ratio
35.85
Displacement / Length Ratio (D/L) Ratio
288.4
Comfort Ratio
24.84
Capsize Screening Formula
2
Hull Speed
6.87 kn