O'Day 30 Sailboats for Sale

The most consequential split is between the keel-only and keel-centerboard versions. The centerboard boat draws less when the board is up and considerably more when deployed; it is heavier and rated slightly slower by PHRF committees that distinguish between the two. For most coastal cruisers the centerboard offers little practical benefit, and the mechanism adds an inspection item that the fin-keel boat simply does not have. Unless you genuinely need the shoal-water access, the fixed fin-keel version is the simpler choice. The second generation of the model, sometimes sold as the O'Day 31, features a lengthened stern with a European-style boarding platform and a slightly different keel and rudder arrangement — it commands a premium on the used market, so buyers need to decide early whether the improved aesthetics and boarding convenience are worth it.

Layouts on the Used Market

Two distinct interior arrangements circulate on the brokerage market, and the split falls along production-year lines. Earlier boats carry a double-settee layout in the main cabin, with a dropleaf centerline table and port settee that extends into a more conventionally shaped double berth. Many owners consider this the more practical cruising arrangement, particularly for extended passages, because storage behind the settees is generous and movement through the cabin is easy when the table is stowed.

Later boats received a redesigned interior with a U-shaped dinette to starboard and a repositioned head compartment. The dinette table converts to a berth, though its five-piece cushion arrangement makes for an awkward sleeping surface. The dinette interior trades some of the original's storage capacity for unobstructed fore-and-aft passage through the cabin when the table is in use. Buyers who plan to live aboard for extended periods tend to prefer the original layout; those who entertain casually often find the dinette more sociable. Either way, the main cabin delivers headroom and elbow room that surprised reviewers when the boat was new and still impresses today.

Forward is a proper V-berth with a double cushion insert, and a quarterberth aft serves as a single. Both interiors sleep six in theory, though the quarterberth is best described as a snug solo bunk rather than the "cozy double" the original sales literature suggested.

Equipment and Common Upgrades

Boats on the used market are often fitted with a spinnaker — unsurprisingly, given that the O'Day 30's high-aspect main is small relative to its foretriangle, and downwind performance in light air calls for a poled-out sail or an asymmetric. A bimini is a frequent presence, and heating systems turn up regularly on boats that have spent seasons in higher latitudes. Chartplotters turn up as an owner-added upgrade, reflecting the age of the fleet and the pace at which electronics become standard expectation rather than luxury.

Air conditioning is a less common addition, though it does appear on boats that have spent time in warmer American anchorages. The original winch specification — designed around a 110% jib — is undersized for the large headsails the boat genuinely needs to perform across a wide wind range, so buyers should expect that a well-sailed example has already seen winch upgrades, or budget accordingly.

The standard two-burner alcohol stove was considered spartan even when new, and propane was not offered as a factory option. Converted propane galleys are the norm on boats that have been seriously cruised; a well-executed conversion is a plus, and its installation quality is worth checking. Engine compartment sound insulation was absent from the factory, and retrofitting it is both worthwhile and common on boats whose owners prized comfort under power.

What to Inspect

The engine history deserves close attention because the model went through three powerplant generations during its production run. The earliest single-cylinder Yanmar installation was underpowered and proved problematic enough that Yanmar issued replacements on some boats; a boat still wearing that original engine should be approached with caution or a detailed service history. Mid-production boats received the Yanmar 2QM15, which owners report as noisy but mechanically sound. Boats built from around 1980 onward were fitted with a two-cylinder 16 hp Universal diesel, and owners of that generation report no significant problems with the engine itself, though the lack of factory sound insulation means the compartment resonates noticeably under load.

On early production boats, the engine beds were bonded to the walls of the engine box rather than a proper fiberglass bed, and vibration from the engine loosened them in service. Later boats received a molded fiberglass engine bed and drip pan that is a substantially better arrangement; if you are looking at an early hull, check that the beds have been properly re-engineered.

The original Navtec rod chainplates were anchored to the body pan — an unconventional but generally sound arrangement. Inspect the chainplate attachment points and surrounding laminate carefully regardless; they have had decades of rig load cycling through them. Check the mast partners and step for any signs of movement or water intrusion, since the mast is stepped through the deck to the keel, and a common owner complaint involves leaks around the mast.

The forward fiberglass hatch is a molded unit that can distort and begin to leak if the dogs are overtightened to compensate for a deteriorated gasket — a problem that is easy to overlook on a survey day and miserable offshore. Check the gasket condition and hatch alignment carefully. Ports and deck hardware are another routine source of leaks on boats of this era, particularly where original bedding compounds have dried out.

Gelcoat crazing is common and largely cosmetic, but the bilge deserves careful probing for any signs of moisture intrusion into the hull pan, which is glassed to the hull and can trap water if the bond has opened. The icebox drains to the bilge by design — a period arrangement that accelerates bilge odor and can mask water intrusion from other sources, so a dry, clean bilge is a meaningful positive sign. On centerboard boats, inspect the board trunk and its pivot hardware for wear and any history of groundings.

Ventilation below is mediocre from the factory, and boats without the optional cabin-top ventilation hatch can be genuinely unpleasant in warm weather — check whether one has been added, and if not, factor the installation into your budget.

Availability and Buyer's Takeaway

The O'Day 30 is a fundamentally American boat, produced in Massachusetts and California, and the bulk of the fleet remains concentrated along the East Coast and Great Lakes, with a secondary presence on the West Coast and Gulf. It does not commonly appear in European waters, though isolated examples have crossed.

The model's reputation for honest construction, spacious interiors, and straightforward maintenance has kept it active and reasonably well-maintained within its owner community. Parts support for the Universal diesel is good, and the boat's simple systems mean that most repairs stay within reach of a handy owner.

Before committing, work through this checklist:

• Confirm which engine generation is fitted and obtain a full service history; prioritize boats with the Universal diesel or a documented Yanmar rebuild
• Determine keel configuration (fin vs. centerboard) and choose deliberately based on your intended waters
• Identify the interior layout (double-settee vs. dinette) and verify it matches how you intend to use the boat
• Inspect engine beds for proper fiberglass bonding, especially on earlier hulls
• Check chainplate attachment points and mast partners for moisture and movement
• Test all ports, hatches, and deck hardware for leaks; inspect the forward molded hatch gasket carefully
• Verify the galley stove fuel type and installation quality if propane has been added
• Check bilge condition and confirm the icebox drain is not masking other water sources
• Assess winch sizing against the headsail inventory you plan to carry
• Note whether a cabin-top ventilation hatch has been installed; if not, budget for one