Design and Construction
Gaubert's hull is a solid fiberglass monohull with a fin keel, built in France and rated unsinkable by the manufacturer. The Challenger Bravo (sans jupe) measures 7.90 meters overall and 2.95 meters beam per the manufacturer, while a later technical review lists a 7.70-meter hull length and 2.90-meter beam; both describe the same cruising sailboat program. She carries about 1,820 to 1,900 kg of displacement and a lead ballast of 1,543 lbs, giving a ballast ratio near 38 percent — higher than 42 percent of similar designs but still associated with a below-average ability to resist heeling. With a length-to-beam ratio of 2.76 and a wetted surface near 24 square meters, she reads as a roomy, moderate-draft coastal cruiser rather than a slender racer.
Rig and Handling
The Bravo is a masthead sloop with a stated sail area of 36.50 square meters. Her sail-area-to-displacement ratio is listed at 22.94, a moderate figure consistent with a cruising brief rather than a lightweight planing hull. The capsize screening value sits at 2.28, a number that would bar her from ocean-race acceptance, and the immersion rate is about 155 kg per centimeter (870 lbs per inch), so she settles predictably under load. Standard sheet spec calls for 10 mm diameter line throughout: an 8.0-meter jib and genoa sheet, a 20.0-meter mainsheet, and a 17.6-meter spinnaker sheet. The fin keel draws roughly 1.85 to 1.95 meters depending on load, giving her a real shoal-water limit despite the modest hull length.
Accommodations
Inside, the Bravo is equipped with six berths, a count that supports the manufacturer's five-person homologation while leaving one spare sea berth for a child or crew. Period comparisons place her interior volume above 82 percent of similar sailboats, which matches the beamy 2.90-meter hull form. She is a habitable cruising design first, with the volume directed at weekending and short coastal passages rather than offshore self-sufficiency.
Known Issues
The principal cautions are inherent to her numbers: the ballast ratio sits just below average for heeling resistance, so she will heel earlier than a heavier-ballasted contemporary, and the capsize screening value of 2.28 confirms she was not conceived for ocean racing. A buyer should read these as design limits, not faults — the hull itself is rated unsinkable and the construction is straightforward solid fiberglass.
Refits and Ownership
The Bravo may be equipped with an inboard engine, though no specific make or horsepower is named. Because production ended in 1984, any surviving example is a candidate for aged systems: engine, wiring, and standing rigging should be judged on condition rather than original spec. The simple fiberglass hull and fin keel make structural survey straightforward, and the unsinkable certification reduces concern over minor penetrations if properly repaired.
The Verdict
The Challenger Bravo is a compact, beamy French cruiser that punches above her length for interior space and carries a genuine unsinkable rating. She is a sensible coastal and second-category cruiser, not a racer or ocean passagemaker. Gaubert's design is honest about its limits, and the solid fiberglass build keeps ownership comprehensible.
Pros
- Beamy hull with interior volume exceeding most similar designs
- Manufacturer-rated unsinkable construction in solid fiberglass
- Predictable immersion and moderate sail plan for relaxed cruising
Cons
- Below-average heeling resistance from a 38 percent ballast ratio
- Capsize screening of 2.28 excludes ocean-race use
- Fin keel draft near 1.95 meters limits very shoal anchorages
