Gemini 3400 Buyer's Guide
Shopping the used brokerage market for a Gemini 3400 means looking at the final development of Tony Smith’s original 1981 catamaran line before his 1996 hull redesign, with 44 boats built between 1993 and 1996. These are modestly constructed, moderately priced coastal cruisers whose shoal draft and roomy three-cabin layouts have made the broader Gemini name a popular cruising catamaran in the United States.
Layouts on the Used Market
On the used market you will more often find owner-configured three-cabin layouts, though both owner and ex-charter versions appear, and ex-charter boats are common. The constant 14-foot beam gives a private queen-berth cabin and two guest doubles, a stand-up head, and a galley and cockpit built to host multiple couples. Ex-charter history is worth noting for wear but does not change the fundamental plan.
Equipment and Common Upgrades
The 3400’s systems center on outboard power rather than inboards. Older boats typically carry outboard engines near 40 horsepower, and the correct extra-long 25-inch shaft is essential to performance yet difficult to find when repowering. Because those outboards cannot generate enough amperage for refrigeration or heat potable water from cooling, the boats rely on LPG appliances for cold and heat—efficient but hazardous if installation or venting is poor. A buyer should verify any LPG work and budget for a proper survey of those systems.
What to Inspect
Several known issues should anchor a pre-purchase survey. The port side sail locker drains can lie below the waterline under sail, letting the locker partly fill. Some Gemini models have shown water entering flotation chambers with no inspection ports to reveal it, so probe for hidden weight or softness. Window leaks are a persistent complaint on older boats and merit close frame and seal examination. Where LPG is fitted, confirm venting and maintenance history.
Availability and Buyer's Takeaway
These boats are typically found in the United States. For a shopper, the takeaway is a short checklist: confirm the centerboards retract fully to the 18-inch draft; inspect sail-locker drainage and flotation chambers; test window seals; verify LPG installation; and confirm the outboard shaft length if repowering is anticipated. The 3400 rewards a careful inspector with uncommon space and shoal-water freedom at a sensible ownership cost.
Price & volume trends
Monthly asking-price and listing-volume trends for the Gemini 3400. The line shows the median ask each month; the bars show how many listings appeared.
Monthly breakdown · 2 rows
| Month | Listings | Median ask | Δ vs. last mo. |
|---|---|---|---|
| Sep 25 | 1 | $45,000 | — |
| Aug 26 | 3 | $55,000 | +22.2% |
Where they're listed
Gemini 3400 listings appear across 1 country. United States has the most listings with 3.
Country view
3 listings · 1 country| Country | Median ask | Listings · 12 mo | Active · 90 d | Share |
|---|---|---|---|---|
| United States | $55,000 | 3 | 2 | 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 |
|---|---|---|---|---|
| Hunter 34 | 34.42' | $ 23,700 | 50 | 9 |
| Tartan 3400/345 | 34.42' | $ 179,900 | 19 | 10 |
| Performance 31/3000 | 30.5' | $ 29,500 | 9 | 4 |
| Gib'Sea 33-1 | 32.45' | $ 45,446 | 7 | 0 |
| Performance 3400You are here | — | $ 55,000 | 4 | 3 |