Schock Harbor 20 Buyer's Guide
Built by W.D. Schock Corp and designed by Steven W. Schock, this 20-foot one-design keelboat first launched in 1998 and now sails in fleets across the United States, Canada, Chile, and Australia. On the used market it presents as a remarkably uncomplicated daysailer and club racer whose simplicity is its strongest selling point: no winches, under-deck line routing, and an optional electric drive that needs no through-hulls.
Layouts on the Used Market
Every Harbor 20 follows the same one-design class rules, so the fundamental layout is constant: a nine-foot cockpit that seats up to eight, with deep coamings and removable ice chests tucked under the deck, and a minimal fiberglass forepeak liner forward. You sit inside the cockpit rather than on the deck, and class rules require racing with cushions, which boats typically carry. The cuddy is a one-piece fiberglass liner with fiberglass floorboards and hatches, and the only wood in the entire boat is the tiller — a useful check point when inspecting a candidate, since any additional timber suggests owner modification.
Equipment and Common Upgrades
Spinnakers are often seen on brokerage boats, and an asymmetric spinnaker appears as a less common owner upgrade rather than standard kit. Beyond sail inventory, the consequential factory option to look for is the electric propulsion package: a custom motor mounted on a bracket that rotates out of the lazarette, running on a 24-volt system from two batteries under the cockpit seats and recharging at the dock. Its quiet, odorless operation and absence of through-hull fittings make it a meaningful upgrade over a portable outboard. Factory soft goods include an optional cockpit cover and jib sock, and the boat is equipped from new with a roller-furling self-tacking Hoyt jib boom and lazy jacks on the fully battened main.
What to Inspect
The keel is a fiberglass shell with lead and epoxy poured into the shell anchor, and the bulb keel keeps weight low; check the keel-to-hull joint for any separation or epoxy cracking. The all-fiberglass interior means no rot risk in floor timbers, but confirm the forepeak liner and floorboards are intact and not cracked. Boats ordered with the CopperPoxy bottom coating should show a copper-based finish that resists osmosis and survives haul-out, while non-coated hulls will need standard bottom survey for blisters. The electric motor option, if fitted, should be verified for its stainless pivot arm and lazarette mounting, and the two forward batteries checked for condition since they determine the about four hours runtime at full speed.
Availability and Buyer's Takeaway
Harbor 20s are found in the United States market. For a shopper, the checklist is short because the design is disciplined:
- Confirm one-design class hull and the single wooden tiller
- Inspect keel shell and lead-epoxy pour for joint integrity
- Verify fiberglass forepeak, floorboards, and hatches are sound
- Check for factory spinnaker or owner-fitted asymmetric
- Test electric drive pivot arm, batteries, and dock charger if equipped
- Look for CopperPoxy bottom as a low-maintenance bonus
Price & volume trends
Monthly asking-price and listing-volume trends for the Schock Harbor 20. The line shows the median ask each month; the bars show how many listings appeared.
Monthly breakdown · 6 rows
| Month | Listings | Median ask | Δ vs. last mo. |
|---|---|---|---|
| Feb 25 | 1 | $19,500 | — |
| Jun 25 | 1 | $20,000 | +2.6% |
| Oct 25 | 1 | $20,000 | 0.0% |
| Mar 26 | 2 | $21,200 | +6.0% |
| Apr 26 | 4 | $20,000 | -5.7% |
| Jun 26 | 3 | $19,000 | -5.0% |
Where they're listed
Schock Harbor 20 listings appear across 1 country. United States has the most listings with 10.
Country view
10 listings · 1 country| Country | Median ask | Listings · 12 mo | Active · 90 d | Share |
|---|---|---|---|---|
| United States | $20,000 | 10 | 3 | 100.0% |
Comparable models
Similar length, displacement, and era. Open a row to compare that model's market page.
Similar boats to compare
2 similar designs| Model | LOA | Median ask | Listings · 12 mo | Active · 90 d |
|---|---|---|---|---|
| Reid Marine 20 | 20' | $ 13,526 | 19 | 5 |
| Schock Harbor 20You are here | — | $ 20,000 | 10 | 3 |