O'Day 40 Sailboats for Sale

Layouts on the Used Market

The more commonly encountered interior arrangement on the used market is the three-cabin configuration, and it is worth confirming which layout a specific boat carries before you travel to see it. The two-cabin, two-head setup does appear on the used market as well: it places a V-berth cabin forward, a port head and shower, a U-shaped dinette and drop-leaf table to port in the saloon, a starboard settee, a port-aft galley, a forward-facing nav station to starboard, and a quarter berth aft under the cockpit. That quarter cabin contains a large athwartship double berth that works well for two people sharing a boat, though anyone sleeping outboard has to wait for their bunkmate to exit first — a minor ergonomic quirk that prospective buyers should evaluate in person. A second head was sometimes fitted into that aft cabin, but the space is tight and many owners who use the boat seriously find dedicated storage more practical.

Keel configuration is equally important when you are filtering listings. The fin keel version draws noticeably more water and rewards those who prioritise close-winded performance and offshore work. The wing keel version, drawing under five feet, opens up shallow anchorages across the Bahamas and the US East Coast ICW corridor, and the majority of buyers in those markets actively seek it out. Both variants are genuinely available, so you have real choice rather than having to settle.

Equipment and Common Upgrades

Biminis are fitted to nearly every boat you will encounter — the deep, protected cockpit pairs naturally with overhead shade and the combination has become essentially standard in this fleet. Dodgers are very commonly present as well, turning the companionway area into a sheltered workstation that suits the cruising couple well. Most boats carry a chartplotter at the helm or at the nav station, and inverters are widely fitted to support household appliances at anchor. Dinghy davits appear frequently on boats that have spent time in liveaboard or extended-cruise service.

Autopilots are a frequent owner upgrade and, given the boat's sail area, close to essential for short-handed passages; inspect whether the installed unit is wheel-mounted, below-deck ram, or tiller-type and factor in its condition. Hot water systems show up on cruising-prepared boats, usually as a calorifier on the engine cooling circuit. Electric winches appear occasionally on boats whose owners have moved toward fully cockpit-managed sailing. The diesel engine fit varies by example — Westerbeke and Universal units both appear in this fleet; they are robust engines and parts remain accessible, but age, impeller history, and raw-water-cooled heat-exchanger maintenance matter more than raw hours on boats of this vintage.

What to Inspect

The balsa-cored composite decks are the first place to focus attention. Osmotic blistering below the waterline is common on unrepaired examples, and where the hull construction is cored, water intrusion is far more consequential than surface blisters on a solid laminate. Cracking and crazing of the fiberglass decks are also quite common and can be severe enough to affect structural integrity, so any questionable areas warrant professional evaluation rather than cosmetic dismissal. Bring a moisture meter and do not skip any section of the deck — paying particular attention to the area around stanchion bases and the mast step, where through-fasteners give water a path into the core.

The chainplates are well-sized, but the deck seals around them can perish, and water staining on the interior bulkheads adjacent to the chain-plate knees is the tell-tale sign. On fin keel examples, look carefully at the forward edge of the keel-to-hull joint for hairline cracking; gelcoat movement here can be benign, but it can also indicate that the keel bolts deserve a surveyor's attention. The mast is deck-stepped, so inspect the compression post below and the deck surface immediately surrounding the step for any evidence of sagging or delamination. Many of these boats still carry their original plastic through-hull valves, which are typically high on a new owner's replacement list; count them, check their condition, and budget accordingly whether or not the survey flags them.

Engine access requires removing the companionway steps and lateral panels, which is workable but not generous. On any boat presented as turnkey, verify that the raw-water impeller, heat exchanger, and zincs have been serviced on a regular cycle — these are the items that hide behind the hours meter on a well-used diesel.

Availability and Buyer's Takeaway

The O'Day 40 fleet concentrates most heavily in the United States, where the boat was built and sold, with meaningful numbers on the East Coast, the Gulf Coast, and in California. Examples appear in the Caribbean and in Australian waters as well. The boat's popularity in the American market means yard familiarity is generally good in US boating centers, and the community of owners is active enough that spares intelligence and refit experience can be sourced without difficulty.

For a buyer working through the brokerage market, the O'Day 40 represents a genuine value proposition: a Briand-designed hull with capable offshore numbers, generous interior volume, and an established reputation, at a price point that leaves room in the budget for the deferred maintenance these boats typically carry. The shoal-draft wing keel variant is the practical choice for East Coast and Bahamian cruising grounds; the fin keel suits those who prioritise upwind work and deeper-water passages.

Before making an offer, confirm the following:

• Moisture meter readings across the full deck and at every stanchion base, mast step, and deck penetration
• Professional evaluation of any osmotic blistering below the waterline, particularly given the cored construction
• Condition and sealing of chainplate deck penetrations; interior bulkhead staining nearby
• Keel-to-hull joint integrity on fin keel examples; keel bolt survey if any movement is detected
• Status of all through-hull valves — material, age, and operation
• Engine service history: impeller, heat exchanger, zincs, and injector condition
• Compression post and deck under the mast step for deflection or delamination
• Autopilot type and condition; confirm cockpit instrument integration