Design and Construction
The Harbor 20 is built to one-design class rules, giving its hull and deck disciplined repeatability. The fiberglass hull carries a 900-pound, torpedo-like bulb keel, made from a fiberglass shell filled with lead and epoxy. The keel keeps weight low in the water, providing plenty of stability in heavy winds without slowing the boat in light air.
Above the waterline, the hull has a fine entry, firm bilges, and a long run aft. This combination offers high speed potential and stability while allowing the boat to move smoothly through choppy water. The rudder sits well aft for authority, and the sheer ends in a graceful shearline counter that looks elegant rather than merely functional.
There’s almost no timber to invite decay. The tiller is the only piece of wood on the boat; the forepeak has a one-piece fiberglass liner, and even the floor timbers are fiberglass.
The builder also offers CopperPoxy non-sloughing bottom coating as an option. Sprayed into the hull mold, it uses a copper-based barrier in an epoxy binder to resist osmosis. The builder claims it reduces annual bottom maintenance to a simple wipe-down and survives winter haul-out without deteriorating.
Rig and Handling
The Harbor 20 carries a fractional sloop rig with a 151-square-foot, fully battened mainsail and an 81-square-foot roller-furling jib. The jib is set on a self-tacking Hoyt club boom, which also acts as an automatic winger when sailing wing-and-wing, holding the jib out without extra effort. Lazy jacks make it easier to furl the main on the boom.
All halyards and control lines run below deck to Harken hardware mounted on a shelf at the aft edge of the cuddy cabin. This keeps the deck clear and puts the controls within easy reach of skipper and crew. There isn’t a single winch aboard, nor any need for one. A centralized control panel just aft of the mast completes the layout.
The boat can be ready to sail in about five minutes: remove the cover and jib sock, raise the main, and unfurl the jib. Under sail, boats.com found that the underbody and rig make the Harbor 20 a fast, easily handled contemporary daysailer.
The design eliminates any advantage from crew weight and strength. No one needs to sit on the rail to balance the boat or duck beneath the boom during a tack, and winning a regatta depends entirely on the skipper’s skill. The Harbor 20 can be raced competitively single-handed or with a crew of two or more. The builder claims that, in the two decades since the first boats were commissioned, the class has seen more racing than any other keelboat.
Cockpit and Accommodation
The Harbor 20 is built around its cockpit rather than its cabin. At about nine feet long, the cockpit seats as many as eight guests. They sit inside the coaming rather than on deck, with deep coamings providing comfortable back support.
Two removable ice chests fit just beneath the deck within easy reach. Cockpit cushions are standard, and class rules require boats to race with them in place.
Forward, the cuddy cabin is minimal and has an all-fiberglass liner. This is clearly a daysailer first, not a small cruiser.
Propulsion and Equipment
An electric motor is available as a clean, quiet, and odorless alternative to an outboard. The custom-built unit pushes the boat at roughly four to five knots. Permanently mounted on a stainless-steel pivot arm, it swings out from the aft lazarette and pins to the starboard gunwale. The installation requires no through-hull fittings.
The motor runs on a 24-volt system supplied by two batteries beneath the cockpit seats. It delivers about four hours of running time at maximum speed and recharges through an in-line, three-step charger plugged in at the dock.
Other factory options include a cockpit cover and jib sock.
Maintenance and Ownership
The one-design rules and largely rot-proof construction simplify ownership. The CopperPoxy bottom is the notable factory option related to future maintenance, replacing annual bottom painting with a wipe-down regime.
Otherwise, the Harbor 20’s basic systems—no winches, control lines led below deck, and optional electric propulsion—help keep ongoing maintenance light. The class’s active racing history also suggests strong community support for owners.
The Verdict
The Harbor 20 succeeds as a purpose-built daysailer and one-design racer that removes much of the usual friction from small-boat ownership. Its low-mounted bulb keel and modern underbody provide stability without a light-air penalty. The self-tacking jib, below-deck line routing, and winch-free deck also make the boat genuinely manageable single-handed.
The all-fiberglass interior structure and optional CopperPoxy bottom suit a boat intended to be used rather than fussed over. The trade-off is equally clear: its large cockpit comes at the expense of cabin accommodation, making the Harbor 20 a daysailer rather than a cruiser.
Pros
- Bulb keel provides heavy-air stability without a light-air penalty
- Self-tacking Hoyt jib and roller furling eliminate most jib handling
- All lines run below deck to Harken hardware; no winches are needed
- Fiberglass interior structure leaves no wood to decay
- Optional CopperPoxy bottom reduces annual maintenance to a wipe-down
- Nine-foot cockpit seats eight, with deep, supportive coamings
Cons
- Minimal cuddy-cabin accommodation; this is a pure daysailer, not a cruiser
- Electric motor runtime is limited to about four hours at full speed
