COMET 850
Specifications
Hull
| LOA | 27.89 ft |
| LWL | 22.31 ft |
| Beam | 9.51 ft |
| Draft | 5.25 ft |
| Displacement | 6,614 lb |
| Ballast | 2,424.7 lb |
| Hull speed1.34·√LWL | 6.3 kn |
About the COMET 850
The Comet 850 is a 27.89 ft masthead sloop designed by Finot and built by Comar (ITA) between 1977 and 1985, with a total production of 417 hulls. This data-driven synthesis reflects owner reports and listings, noting that while no specific structural defects were flagged in the analyzed corpus, the fleet shows a strong trend toward modernizing electronics and propulsion.
- Best for:
- This boat suits coastal cruisers and weekend sailors who prioritize a manageable 27.89 ft LOA with a comfortable 21.22 comfort ratio, making it ideal for couples or small families seeking a low-maintenance package with ample interior volume relative to its length.
- Bluewater capability:
- With a displacement of 6614.0 lb and a conservative capsize ratio of 2.03, the Comet 850 is capable of coastal and nearshore passages, though its 5.25 ft max draft and fin keel configuration suggest it is better suited for protected waters than heavy offshore bluewater voyaging.
- Comparables:
- Comparable boats include the Beneteau First 27 and O'Day 27, as they share similar production eras (late 1970s–1980s), displacement ranges around 6614.0 lb, and a focus on easy handling for short-handed cruising.
Performance
ORC Performance Data(9 certificates)
Measured performance data from ORC (Offshore Racing Congress) certificates.
Polar Diagram
Boat speed (kn) vs. true wind angle. Source: ORC
Racing Ratings
Triple Number
ORC Measured
Sail Areas (ORC)
Speed Table (kn)
| TWA \ TWS | 6 | 8 | 10 | 12 | 14 | 16 | 20 |
|---|---|---|---|---|---|---|---|
| 52° | 3.9 | 4.6 | 5.2 | 5.6 | 5.8 | 6.0 | 6.0 |
| 60° | 4.2 | 4.9 | 5.5 | 5.8 | 6.0 | 6.2 | 6.2 |
| 75° | 4.4 | 5.2 | 5.8 | 6.0 | 6.2 | 6.4 | 6.6 |
| 90° | 4.4 | 5.3 | 6.0 | 6.3 | 6.5 | 6.6 | 6.8 |
| 110° | 4.5 | 5.4 | 6.0 | 6.3 | 6.6 | 6.9 | 7.3 |
| 120° | 4.3 | 5.3 | 5.9 | 6.3 | 6.6 | 6.9 | 7.4 |
| 135° | 3.9 | 4.8 | 5.6 | 6.1 | 6.4 | 6.6 | 7.2 |
| 150° | 3.4 | 4.2 | 4.9 | 5.5 | 5.9 | 6.2 | 6.6 |
| Beat VMG | 2.4 | 3.0 | 3.3 | 3.6 | 3.9 | 4.0 | 4.0 |
| Run VMG | 2.9 | 3.6 | 4.3 | 4.8 | 5.2 | 5.7 | 6.3 |
Pricing
We don't have market pricing data for the COMET 850 yet. If you own one, help other buyers — what did you pay for it? Reports build a community price estimate over time.
Estimated Cost of Ownership
Based on 27.89ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
We don't have enough data on the COMET 850yet to publish model-specific findings we'd stand behind — but here's a free general inspection checklist, built from our research into what actually goes wrong on boats of this kind.
Drawn from 7,029 documented issues across 2,391 models, ordered so the areas that most often turn up problems come first.
Own a COMET 850? Reports from owners are what turn this into a model-specific checklist — and they're the reason the boats above it have one.
Similar Sailboats
Which engine powers your COMET 850?
We haven't confirmed the engine for this model yet. If you own or know one, tell us — as owners report in, we build an accurate picture over time.
Already know your engine? Search all engines → to find its exact parts.
Used sails that fit the COMET 850
Checking eBay for sails sized to this boat's rig…