Comet 770 Information, Review, Specs

Sailing Performance & Handling

Under sail, the Comet 770 displays the hallmarks of Jean-Marie Finot’s early work: a relatively wide beam carried well aft and a high ballast ratio that ensures stability even when the breeze freshens. With a displacement of approximately 1,800kg and nearly 40% of that weight concentrated in the keel, the boat is remarkably stiff for a 25-footer. It handles with a nimbleness typical of a masthead sloop of its era, showing a particular affinity for reaching and downwind points of sail where the hull's volume provides a stable platform.

The sail area-to-displacement ratio suggests a boat that is capable in light Mediterranean airs, though it truly finds its stride in 10 to 15 knots of wind. While the wide beam makes it a comfortable platform, it can develop a heavy helm if over-canvassed, a common trait for IOR-influenced designs with pinched sterns. Owners frequently note that the 770 tracks well and provides a sense of security in a chop that belies its small stature, making it a favorite for those graduating from dinghy sailing to "big boat" cruising.

Interior Comfort & Variations

For a vessel measuring just 7.7 meters, the interior volume of the Comet 770 was revolutionary at the time of its release. The layout typically features a classic "V" berth in the bow, followed by a central saloon with a folding table and two longitudinal settees that double as berths. The galley and a small navigation station are located aft, flanking the companionway. Unlike many contemporary designs that opted for a cramped "quarter berth," the 770 emphasizes open living space in the main cabin.

The materials utilized reflect the 1970s aesthetic, often featuring dark wood veneers and molded fiberglass liners that are easy to maintain but can feel somewhat dated today. Headroom is surprisingly generous for a boat of this length, though taller sailors will still find themselves stooping. While the standard version was the most popular, Comar occasionally offered semi-custom interior tweaks, though the structural bulkheads remained fixed to ensure hull rigidity.

Known Issues & Buyer’s Checklist

As these vessels approach their fifth decade of service, several technical areas require scrutiny during a pre-purchase inspection:

• Osmosis Risk: Early Italian fiberglass work from the 1970s is known to be susceptible to osmotic blistering. Buyers should inspect the hull for signs of "wicking" or moisture trapped within the laminate, particularly near the waterline.
• Chainplates and Standing Rigging: The original design utilizes stainless steel chainplates that are bolted through the hull/deck joint. Over time, these can develop stress cracks or leak, leading to core saturation in the deck.
• Original Engines: Many 770s were originally fitted with small Nanni or Farymann diesel engines. Spare parts for these older units are becoming increasingly difficult to source, and many hulls have been repowered with modern Volvo or Yanmar units—a significant value-add for any prospective buyer.
• Deck Delamination: Like many boats of this era, the Comet 770 features a cored deck. High-stress areas around the mast step and the cockpit floor should be checked for "soft spots" indicating that the core has separated from the fiberglass skins.

Community & Resources

The legacy of the Comet line is preserved primarily through Italian sailing organizations. The Comet Owners Association (often referred to in Italy as the Associazione Armatori Comet) remains the most authoritative resource for technical drawings and original factory specifications. While most documentation is in Italian, the association provides a vital link for owners seeking to restore these vessels to their original factory condition.

The Verdict

The Comet 770 remains an excellent entry-level cruiser for those who appreciate classic lines and robust Italian construction. While it requires the maintenance typical of an older fiberglass boat, its sailing characteristics and clever use of space make it a standout in the vintage market.

Pros:

• Remarkable interior volume for a 25-foot hull.
• High ballast ratio provides excellent stability and safety for coastal cruising.
• Proven design pedigree from the renowned Groupe Finot.
• Strong secondary market in Europe with a dedicated owner base.

Cons:

• Susceptible to osmosis if the hull has not been previously treated or epoxied.
• Original engine parts can be difficult to locate.
• Interior aesthetic may feel cramped and dated compared to modern high-volume cruisers.