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HARBOR 20

HARBOR 20

W. D. Schock Corp.🇺🇸· Design: Steven Schock
$20,467 avg$17,500 – $24,900 (3 listings)from 1997
$500 – $1.4K est. annual maintenance
DaysailermonoFractional SloopFin
Harbor 20 Class Association

Specifications

Hull

LOA20 ft
LWL17 ft
Beam7 ft
Draft3.5 ft
Displacement1,800 lb
Ballast900 lb
Hull speed1.34·√LWL5.5 kn

Rig & Sails

Iforetriangle height25.75 ft
Jforetriangle base7 ft
Pmainsail luff26 ft
Emainsail foot10 ft
FLforestay7 ft
Mainsail230.5 sq ft
Jib (100%)90.1 sq ft
Spinnaker153.2 sq ft

About the HARBOR 20

Sailpages Buyer's Take

Designed by Steven Schock and built by W. D. Schock Corp. in 1997, the Harbor 20 is a compact, performance-oriented trailer sailer with a displacement of 1800.0 lb and a fractional sloop rig. While the exact hull production count is unknown, the model is characterized by its lightweight construction and high sail area-to-displacement ratio of 23.84.

Best for:
This boat is ideal for coastal cruisers and trailer-sailing enthusiasts who prioritize ease of transport and storage over heavy offshore endurance. It suits single-handers or couples seeking a responsive, lightweight day-sailer that can be easily launched from a trailer.
Bluewater capability:
With a low displacement of 1800.0 lb and a capsize ratio of 2.3, the Harbor 20 is not designed for serious bluewater cruising but is capable of protected coastal passages and short offshore trips when properly equipped.
Comparables:
Comparable boats include the O'Day 23 and the Catalina 22, as they share similar trailer-sailing roles and fractional sloop rigs from the same era. However, the Harbor 20 distinguishes itself with a significantly lighter displacement and a more performance-focused hull form designed by Steven Schock.

Performance

Comfort11.6
Capsize2.30
SA/Disp23.8
Disp/Len164
Bal/Disp50.0

Images

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Estimated Value

Limited Data
Based on 2 listings
Low
$15,034
Estimated Value
$16,472
High
$17,909
Inflation-adjusted to 2026 USD

Asking price by model year

8 listings · boat years 19982017 · median $19,000

$0$10k$20k$30k$40kmedian $19,00020002005201020152003 Schock Harbor 20 · $18,500 · Florida, US2017 Schock Harbor 20 · $30,000 · Maryland, US2015 Schock Harbor 20 · $33,500 · Florida, US2017 Harbor 20 · $24,900 · NJ, US2014 Harbor20 · $17,500 · CA, US1998 ARVOR 20 · $14,5002015 Schock Harbor 20 · $14,789 · California, California, United States2002 Schock schock harbor 20 · $19,000 · CAAsking price (USD)Boat model year

Each dot is one listing · hover for details · dashed red line marks the median · obvious data-entry outliers (top & bottom 2.5%) excluded.

Estimated Cost of Ownership

Based on 20ft LOA. Actual costs vary by condition, usage, and local rates.

$/ft/mo
Annual Maintenance
$500 – $1.4K
Hull, rigging, sails, engine service
Annual Docking
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Known Issues & Pre-Purchase Inspection

23 reported issues across 8 systems for the HARBOR 20, compiled from owner reports in sailing forums and owner-association material.

6 critical8 major9 minor
Engine6Rigging4Rudder3Deck3Structural3Hull2Keel1Electrical1

Unlock the full inspection report

Thinking of buying a HARBOR 20? This is an in-depth report on the faults this model is known for — so you know exactly what to check when you walk the boat. For the price of a coffee.

  • All 23 specific issues — severity, symptoms & fixes
  • Model-specific pre-purchase inspection checklist
  • Downloadable PDF to take to your surveyor — yours to keep

One-time $2.99 · secure checkout by Stripe · instant access · 30 days online, PDF yours to keep

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Which engine powers your HARBOR 20?

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.

Brands sometimes mentioned for this model: Yanmar, Westerbeke, Perkins — is it one of these?

Already know your engine? Search all engines → to find its exact parts.

Used sails that fit the HARBOR 20

Checking eBay for sails sized to this boat's rig…