Sailboat Manufacturer: O’Day Corp

The history of O’Day sailboats began in the 1950s at both sides of the Atlantic when the production of fiberglass was booming. In the year 1956, famed designers Uffa Fox and George O’Day teamed up to create the O’Day Day Sailer. This partnership gave birth to the technique of dinghy racing and designed many significant classes of boats, including the International 14. The idea behind O’Day sailboats was to create a representation of a pure racing dinghy, and an appealing piece that would appeal to the recreational market in the United States. After about two years, in 1958, the first O’Day Sailboat was sold and immediately became popular in the United States recreational and sailing markets. Before the year 1991, O’Day Sailboats had over 15000 boats hitting the waterways and they worked tirelessly to improve performance, speed, and strength.

The first-ever built O’Day Sailboat can easily be identified by wooden thwarts, seats, and cockpit sole, a centerboard lever, open cuddy, and a transom deck. The DS II came out in 1971 with a built-in foam flotation system. 

By the late 1980s, an industrial downturn occurred in the sailboat manufacturing industry and O’Day Corp could not recover from this and went out of business in 1991. O’Day built boats designed for the average sailor for 33 years.

O’Day Sailboat Models

O’Day 25

O’Day 25 Sailboat drew from the inspiration of CR hunt and associates in the year 1975 with its peculiar fiberglass design and a small recreational keelboat. The O’Day 25 Sailboat is often referred to as the sleekest and most stylish design of the O’Day series of cruisers. It features broad-beamed designs for live-aboard comfort. Wide, flat decks invite sunbathing, provide racing safety. Two separate cabins and a galley aft under a spacious companion-way hatch, a generous storage space. 5’6″ headroom in the main cabin.

If you’re looking for something light with excellent speed and performance for family cruising the O’Day 25 seems to be your favorite option.

This sailboat has a keel that is molded with the hull. 1,500 lbs. of inside ballast and a centerboard raised to draw only 2’3″. It features a tabernacle which makes stepping the mast a single-handed job.

The O’Day 25 is often regarded as an extender of horizons — on the water or trailered behind your car. It is often regarded as America’s most successful 25-footer ever.

Hunt Associates conceived of the 25 as a trailerable sailboat that had big performance and feel, and 100% usable interior space. They moved the settees right out to the point of maximum beam, raising the deck for plenty of sitting room. Then they narrowed the trunk cabin, keeping maximum headroom above the walking areas, and leaving nice wide side decks for sunbathing.

O’Day 23

The O’Day 23 also was designed similar to the O’Day 25, being predominantly fiberglass with wood trim and a masthead sloop rig. It also features a transom-hung rudder and a folding centerboard keel. The boats are normally fitted with outboard motors. This model is typical of the popular pop-up “Lift Top” or later “Convertible Top” that is typical of the O’Day 23 variants which include O’Day23 – 1 and O-Day 23 – 2. The former was introduced in 1972 and it has over 500 boats cruising the waters while the latter was introduced in 1978 but it took about six years later (1984) before they got their first successful build. Thee O’Day-23 – 2 has over 1000 examples. Also, between the years 1978 – 1986, C, Raymond Hunts and associates also came up with another series called O’Day – 28 which has similar design features of fiberglass, recreational keelboat, a masthead sloop rig, and a slightly reversed transom. In terms of speed, the design has a hull speed of 11.89km/hr.

The Cal 39 (Hunt/O’Day)

C Raymond and associates didn’t give up on being innovative in their sailboat designs. They partnered with Jensen Marine/Cal Boats to build what would be called the Cal 39. The team designed a sailboat featuring a monohull and a construction that is predominantly fiberglass. The Hull appendages have a fin keel with a ballast of 7000lb. The rig type is the noteworthy Bermuda type having a foretriangle height of 52.50ft a, foretriangle base of 15.25 ft. (4.65 m), mainsail luff of 46.66 ft. (14.22 m) and a mainsail foot of 15.00 ft. (4.57 m). In its early days, it was initially marketed as Cal 39, but it’s now major referred to as Cal 39 (Hunt/O’Day) to differentiate it from the earlier unrelated C. William Lapworth-designs: the 1970 Cal 39, the 1978 Cal 39 Mark II and 1983 Cal 39 Mark III, which were marketed under the same Cal 39 name. 

This O’Day sailboat has accommodation for about six people to make your cruising adventure a memorable one.


In 1981, C Raymond Hunt and Associates introduced another O’Day line of sailboats. The O’Day 34 and 35 have close similarities and the only difference is a modification on the O’Day 35 in 1985 with a transom that was modified slightly, and a boarding/swim platform was molded in. The change resulted in the addition of 11-1/2″ to the LOA, and between 1985 and 1989, essentially the same boat was marketed as the O’Day 35. The two boats have the same waterline length of 28’ 9″, the same beam of 11’ 3″, and the same approximate displacement of 11,500 lbs. Both offered deep draft and shoal draft models drawing 5’ 7″ and 4’ 3″ respectively.

As expected, the hull features a solid laminate design of fiberglass construction. Also, decks are made of balsa wood (typical of most boats built in the 1970s to keep the structure light but yet strong rigid)

Power is provided by Universal Marine’s three cylinders that are capable of delivering 21 Hp of a fresh, water-cooled diesel engine which is sufficient power for the size and weight of the boat. The fuel tank and water heater are installed aft of the engine and there is a large port sided seat locker through which even a 200+ pounder can fit for easy access to and service of this equipment.


  • No comments yet.
  • Add a comment