Cape Cod Mercury 15 FK Buyer's Guide
The Cape Cod Mercury 15 FK on the used market is the fixed-keel expression of a Sparkman & Stephens design that has been built by Cape Cod Shipbuilding since 1939 and never went out of production. Whether you find a wooden early example or a fiberglass hull from after 1948, you are looking at a 15-foot daysailer whose simplicity is its own selling point.
Layouts on the Used Market
Two layouts circulate: the centerboard boat and the fixed-keel FK. The FK drops the centerboard trunk, giving a clearer cockpit floor and the steadiness of 300 pounds of iron ballast in a 730-pound hull anchor. Both seat five and sail easily with two, so the choice is between trailable shallowness and the rooted feel of a small keelboat anchor. Early wooden boats exist but are a different ownership proposition from the post-1948 fiberglass ones anchor.
Equipment and Common Upgrades
From the factory the standard Mercury came with aluminum spars and a roller-reefing boom, standing and running rigging, a vinyl rubrail, anti-fouling bottom paint, and a swivel cam cleat for the mainsheet on the aft deck anchor. Buyers should treat the roller-reefing boom and factory paint as baseline; later owners may have added trailer gear, since the boat was offered with an optional trailer for ramp launching anchor. Beyond those points the class is bare-bones, and most upgrades you meet will be owner-fitted sail or trailer convenience rather than factory options.
What to Inspect
The one structural reassurance is built in: the seats in both versions form air tanks that keep the boat afloat when the cockpit is full of water anchor. On a wooden early boat, inspect the 1948-and-before construction for rot in the way you would any aged timber hull anchor. On fiberglass examples, confirm the rubrail is intact and the factory anti-fouling remains or was properly reapplied anchor.
Availability and Buyer's Takeaway
These boats are found in the United States. For a shopper, the short list is:
- Decide centerboard versus fixed-keel FK by trailer depth and stability need
- Verify seat air tanks are sealed and intact
- Check wooden boats for structural rot; fiberglass for rubrail and paint history
- Confirm spars, rigging, and mainsheet cleat are original-standard or soundly upgraded
Price & volume trends
Monthly asking-price and listing-volume trends for the Cape Cod Mercury 15 FK. 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. |
|---|---|---|---|
| Jul 25 | 1 | $2,000 | — |
| Jun 26 | 1 | $2,500 | +25.0% |
Where they're listed
Cape Cod Mercury 15 FK listings appear across 1 country. United States has the most listings with 1.
Country view
1 listings · 1 country| Country | Median ask | Listings · 12 mo | Active · 90 d | Share |
|---|---|---|---|---|
| United States | $2,500 | 1 | 1 | 100.0% |