Design and Hull
The Comet 910 is a fibreglass sloop of just under thirty feet, built around a fin keel that prioritises manoeuvrability over the directional docility of a full-keel alternative. The hull itself demands little from its owner during a sailing season — fibreglass requires only minimal maintenance — and the proportions lean toward the spacious end of the spectrum for boats of this era. The length-to-beam ratio of 2.97 places the 910 in the wider half of comparable designs, meaning the cockpit and cabin feel less pinched than many contemporaries of the same waterline length.
The draft — somewhere between 1.70 and 1.80 metres depending on load — is shallow enough to enter most marina berths without difficulty, yet the fin configuration still gives the boat a lively, responsive character on the helm. The keel itself is iron rather than lead. The practical difference is modest: iron carries roughly thirty percent less weight by volume than lead, but because a fin keel represents only a fraction of total wetted surface, the penalty in drag for a cruising yacht is largely theoretical.
Rig and Sailing Performance
The rig is a conventional masthead sloop and the running gear is straightforward. Jib and genoa sheets run to about nine metres; the mainsheet calls for roughly twenty-three metres of twelve-millimetre line; spinnaker sheets are pegged at twenty metres. These are workable dimensions for a short-handed crew, and the spinnaker provision signals that Sipla intended the 910 to be raced as well as cruised.
Its racing debut confirmed the intent spectacularly. The Comet 910 beat the entire Middle Sea Race fleet on corrected time, a result so unexpected that it seemed to surprise its own designers. That victory translated directly into commercial momentum: almost 1,000 units were produced over a fifteen-year span, a production run that few Italian yards of the period could match and that funded the construction of new, state-of-the-art manufacturing plants.
Accommodations
Below decks the 910 provides six berths — generous for a boat of this length — arranged across a cabin that benefits from the hull's wider-than-average beam. The interior owes something to the Van de Stadt influence that predates the 910: Sipla's earlier Meteor had already demonstrated that habitable, manageable accommodation was achievable in a small fibreglass hull, and the 910 built on that foundation.
The Volvo Penta diesel inboard option — rated at sixteen horsepower — covers harbour work and light-air passages without demanding significant engine-room volume. Power requirements are modest and the installation is conventional for boats of this vintage.
Race Record and Historical Standing
The 910's importance is inseparable from Comar's own story. It was this model, and the factory expansion it bankrolled, that allowed Sipla to change its name to Comar and to cement a formal design collaboration with Finot — a relationship that subsequently produced the Comet 801, Comet 11, Comet 13, and Comet 14, each notable for pushing interior and deck solutions beyond what Italian buyers had previously expected from production boats. The Comet 910 was essentially the financial engine that built modern Comar, enabling new plants and making Italy's broadest popular sailing movement possible.
For a racing crew of the early 1970s, the boat offered cutting-edge responsiveness in a package that was accessible in price and modest in maintenance. The fibreglass construction, the fin keel, and the spinnaker-capable rig were each deliberate choices, not compromises.
Known Considerations
The iron keel warrants inspection on any older example. Cast iron corrodes differently from lead; surface rust is cosmetic, but sustained seawater exposure without adequate protective coating can cause progressive deterioration at the keel-to-hull joint. Prospective buyers should pull the boat and examine the keel bolts and the rebate carefully. A fin keel's reduced directional stability compared with a full-keel design is the other practical trade-off: the 910 tracks well enough for coastal and offshore passages, but requires more active steering in confused seas than a heavier-displacement full-keeler would.
The ballast ratio of thirty-two percent sits in the lower range among comparable designs, which is the expected consequence of an overtly performance-oriented brief. The boat is not tender by the standards of its type, but owners expecting the self-righting stability of a cruising full-keeler will find it a different animal.
The Verdict
The Comet 910 is one of the more consequential small production sailboats built in Italy. Its race record was genuine, its construction numbers were substantial, and its role in establishing Comar as a serious yard is a matter of documented history rather than marketing mythology. For a buyer who wants a well-proven fin-keeler with an authentic racing pedigree and manageable size, the 910 remains a coherent choice — provided the keel and underwater fittings are inspected carefully on any aged hull.
Pros
- Proven offshore race record from its earliest outings
- Fibreglass construction with low in-season maintenance demands
- Wider-than-average beam for its length class improves interior volume
- Six berths in under thirty feet
- Nearly a thousand examples built, meaning parts knowledge and owner experience are broadly distributed
- Shallow draft opens a wide range of anchorages
Cons
- Iron keel requires vigilant maintenance and bolt inspection on older boats
- Lower ballast ratio than most comparable designs limits ultimate righting moment
- Reduced directional stability inherent in the fin-keel configuration demands active helming in heavy weather
- Production ended decades ago; sourcing original spares depends on specialist suppliers and active owner communities
