Gemini 31/3000 Buyer's Guide
Shopping the used Gemini 31/3000 means considering a 153-boat production run built between 1981 and 1990 by Performance Cruising, a narrow 14-foot-beam catamaran conceived from Ken Shaw’s 1969 Aristocat lines. These are coastal cruisers first, with retracting centerboards and a transom-mounted outboard, and the brokerage pool reflects both private and ex-charter histories.
Layouts on the Used Market
Owner three-cabin arrangements are the more common on the used market, but both layout types remain available, and ex-charter examples are common. The typical plan places a queen-size berth forward between the hulls, with aft double cabins in each hull and a raised saloon that converts to another berth; a full solid bridgedeck eases anchor work and adds stowage. Headroom runs about six feet, and the cockpit is roomy enough to walk around with bulkhead wheel steering.
Equipment and Common Upgrades
Power comes from a single long-shaft outboard on the transom that turns with the rudders and lifts to sail; production boats left the factory with a 35 hp Mercury as standard and 40 hp as an option, yet a good number now cruise with just 25 hp anchor. Because those alternators make little electricity, most boats use propane refrigerators and water heaters, with fridges also running on 110-volt at the dock. A frequent owner upgrade is solar, and a bimini is sometimes seen—both speak to managing limited DC capacity and cockpit shade rather than changing the boat’s character.
What to Inspect
Flexing in older hulls often leads to crazing and spider cracking in the exterior gelcoat, and more severe stress cracking may indicate delamination that should be carefully checked anchor. Practical Sailor's survey found that a fifth of older-model owners reported some blistering anchor, so hull bottoms deserve a close look. Early boats had leaky Plexiglas windows—later switched to Lexan—and Practical Sailor advises you should also examine steering cables for corrosion and confirm deck hardware is not undersized anchor.
Availability and Buyer's Takeaway
Used Gemini 31/3000 catamarans are found on the used market in the United States. A short checklist for the walk-through:
- Confirm centerboard trunks are molded-in with a clean two-inch slot
- Inspect gelcoat for crazing and test suspected stress cracks for delamination
- Check windows for leaks; verify Lexan rather than aged Plexiglas
- Exercise steering to reveal cable corrosion; assess deck hardware size
- Verify outboard lift and rudder-turn function; note actual horsepower
Price & volume trends
Monthly asking-price and listing-volume trends for the Gemini 31/3000. The line shows the median ask each month; the bars show how many listings appeared.
Monthly breakdown · 3 rows
| Month | Listings | Median ask | Δ vs. last mo. |
|---|---|---|---|
| Feb 26 | 1 | $32,000 | — |
| Apr 26 | 4 | $35,000 | +9.4% |
| Jul 26 | 4 | $26,900 | -23.1% |
Where they're listed
Gemini 31/3000 listings appear across 1 country. United States has the most listings with 9.
Country view
9 listings · 1 country| Country | Median ask | Listings · 12 mo | Active · 90 d | Share |
|---|---|---|---|---|
| United States | $29,500 | 9 | 4 | 100.0% |
Comparable models
Similar length, displacement, and era. Open a row to compare that model's market page.
Similar boats to compare
5 similar designs| Model | LOA | Median ask | Listings · 12 mo | Active · 90 d |
|---|---|---|---|---|
| Performance Catamarans 105 MC | 33.5' | $ 89,750 | 82 | 14 |
| Hunter Marine 31 | 31.33' | $ 22,500 | 69 | 10 |
| Seawind 1000 | 32.81' | $ 119,000 | 31 | 4 |
| Performance 31/3000You are here | — | $ 29,500 | 9 | 4 |
| Gib'Sea 33-1 | 32.45' | $ 45,119 | 7 | 0 |