The Dolphin 24 is an American trailerable

sailboat A sailboat or sailing boat is a boat propelled partly or entirely by sails and is smaller than a sailing ship. Distinctions in what constitutes a sailing boat and ship vary by region and maritime culture. Types Although sailboat terminology ...

that was designed by William Shaw of

Sparkman & Stephens Sparkman & Stephens is a naval architecture and yacht brokerage firm with offices in Newport, Rhode Island and Fort Lauderdale, Florida, USA. The firm performs design and engineering of new and existing vessels for pleasure, commercial, and milit ...

as a

Midget Ocean Racing Club The Midget Ocean Racing Club (MORC) is an American association based in Severna Park, Maryland, that promotes and organizes ocean Sailing (sport), racing for small sailboats under a handicapping rule. History Founded in 1954, the club was for ...

(MORC) racer-

cruiser A cruiser is a type of warship. Modern cruisers are generally the largest ships in a fleet after aircraft carriers and amphibious assault ships, and can usually perform several operational roles from search-and-destroy to ocean escort to sea ...

and first built in 1959. Shaw had been one of the instigators of the MORC rules. The boat is Sparkman & Stephens' design #1497.Henkel, Steve: ''The Sailor's Book of Small Cruising Sailboats'', page 285-286.

International Marine McGraw Hill is an American education science company that provides educational content, software, and services for students and educators across various levels—from K-12 to higher education and professional settings. They produce textbooks, ...

McGraw-Hill McGraw Hill is an American education science company that provides educational content, software, and services for students and educators across various levels—from K-12 to higher education and professional settings. They produce textbooks, ...

, 2010. The design was built by a large number of manufacturers during its lengthy production run between 1959 and 1978.

Production

The design was initially sold by the

O'Day Corp. O'Day Corp. was an United States, America sailboat builder, located in Fall River, Massachusetts. History It was founded in 1958 by George O'Day, the American Olympic and World champion sailor. George O'Day sold the company to Bangor Punta Corpo ...

in the

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

, with production of 36 boats between 1959 and 1967. O'Day did not build the boat in-house, but contracted out construction to several different companies, including Lunn Laminates of

Long Island, New York Long Island is a densely populated continental island in southeastern New York (state), New York state, extending into the Atlantic Ocean. It constitutes a significant share of the New York metropolitan area in both population and land are ...

and later Marscot Plastics in

Fall River, Massachusetts Fall River is a city in Bristol County, Massachusetts, United States. Fall River's population was 94,000 at the 2020 United States census, making it the List of municipalities in Massachusetts, tenth-largest city in the state, and the second- ...

, a company that later became a subsidiary of O'Day.

J.J. Taylor and Sons Ltd. JJ or jj may refer to: Arts and entertainment Film and television * J. J. Evans, a character in the 1970s sitcom ''Good Times'' * Jennifer Jareau or JJ, a character in ''Criminal Minds'' * John Diggle Jr., a character in ''Arrow'' nicknamed ...

in Canada also likely built some. The boat was also sold by US Yachts Inc. of

Westport, Connecticut Westport is a town in Fairfield County, Connecticut, United States. Located in the Gold Coast (Connecticut), Gold Coast along the Long Island Sound, it is northeast of New York City and is part of the Western Connecticut Planning Region, Connec ...

under Bob Larsen and Warren Dellenbaugh (not the same

US Yachts Bayliner is a manufacturer of recreational boats. Established in 1957 by Orin Edson, Bayliner currently has over 400 dealers in over 60 countries around the world. The company operates as part of the Brunswick Boat Group, a division of the Brun ...

that was a division of

Bayliner Bayliner is a manufacturer of recreational boats. Established in 1957 by Orin Edson, Bayliner currently has over 400 dealers in over 60 countries around the world. The company operates as part of the Brunswick Boat Group, a division of the Brun ...

), with O'Day building the boats for them. US Yachts Inc. was to go public on the

New York Stock Exchange The New York Stock Exchange (NYSE, nicknamed "The Big Board") is an American stock exchange in the Financial District, Manhattan, Financial District of Lower Manhattan in New York City. It is the List of stock exchanges, largest stock excha ...

. In 1968 Yankee Yachts Inc. acquired the design rights and started production in

Inglewood, California Inglewood is a city in southwestern Los Angeles County, California, United States, in the Greater Los Angeles, Greater Los Angeles metropolitan area. As of the 2020 United States census, 2020 U.S. census, the city had a population of 107,762. ...

, with few changes to the design. The hulls were actually built by O'Day, but eventually Yankee used one of the completed hulls to create its own mold. Yankee later moved to

Santa Ana, California Santa Ana (Spanish language, Spanish for ) is a city in and the county seat of Orange County, California, United States. Located in the Greater Los Angeles region of Southern California, the city's population was 310,227 at the 2020 census. As ...

. After Yankee went out of business, one of their suppliers restarted production in

Anaheim, California Anaheim ( ) is a city in northern Orange County, California, United States, part of the Greater Los Angeles area. As of the 2020 United States census, 2020 census, the city had a population of 346,824, making it the most populous city in Orang ...

, under the name Pacific Dolphin, building boats from 1974 to 1978, before production ended. Some of the boats were also sold as

kits KITS (105.3 FM broadcasting, FM, "Live 105") is a commercial radio, commercial radio station in San Francisco, San Francisco, California. Owned by Audacy, Inc., it broadcasts an alternative rock radio format known as "Live 105". The studios ...

for owner completion.

Design

The Dolphin 24 derived from an earlier wooden boat design, the Mermaid 24. The Dolphin 24 is a recreational

keelboat A keelboat is a riverine cargo-capable working boat, or a small- to mid-sized recreational sailing yacht. The boats in the first category have shallow structural keels, and are nearly flat-bottomed and often used leeboards if forced in open w ...

, built predominantly of

fiberglass Fiberglass (American English) or fibreglass (English in the Commonwealth of Nations, Commonwealth English) is a common type of fibre-reinforced plastic, fiber-reinforced plastic using glass fiber. The fibers may be randomly arranged, flattened i ...

, with wood trim. It has a

masthead sloop A masthead rig on a sailing vessel consists of a forestay and backstay both attached at the top of the mast. The Bermuda rig can be split into two groups: the masthead rig and the fractional rig. The masthead rig has larger and more headsails, a ...

rig, a

raked stem The stem is the most forward part of a boat or ship's bow and is an extension of the keel itself. It is often found on wooden boats or ships, but not exclusively. Description The stem is the curved edge stretching from the keel below, up to ...

; a raised counter, angled transom; a

keel The keel is the bottom-most longitudinal structural element of a watercraft, important for stability. On some sailboats, it may have a fluid dynamics, hydrodynamic and counterbalancing purpose as well. The keel laying, laying of the keel is often ...

-mounted

rudder A rudder is a primary control surface used to steer a ship, boat, submarine, hovercraft, airship, or other vehicle that moves through a fluid medium (usually air or water). On an airplane, the rudder is used primarily to counter adverse yaw ...

controlled by a

tiller A tiller or till is a lever used to steer a vehicle. The mechanism is primarily used in watercraft, where it is attached to an outboard motor, rudder post, rudder post or stock to provide leverage in the form of torque for the helmsman to turn ...

and a fixed long keel, with a

centerboard A centreboard or centerboard (US) is a retractable hull appendage which pivots out of a slot in the hull of a sailboat, known as a ''centreboard trunk'' (UK) or ''centerboard case'' (US). The retractability allows the centreboard to be raised t ...

. It displaces and carries of ballast. After a fire destroyed the deck molds, some boats were finished with wooden decks and wooden coach house roofs. The boat has a draft of with the centerboard extended and with it retracted, allowing operation in shallow water or ground transportation on a trailer. The boat is fitted with a Palmer Husky

gasoline engine A petrol engine (gasoline engine in American and Canadian English) is an internal combustion engine designed to run on petrol (gasoline). Petrol engines can often be adapted to also run on fuels such as Autogas, liquefied petroleum gas and Common ...

for docking and maneuvering, or a small, stern well-mounted

outboard motor An outboard motor is a propulsion system for boats, consisting of a self-contained unit that includes engine, gearbox and propeller or jet drive, designed to be affixed to the outside of the transom. They are the most common motorised method ...

. The boats built by Pacific Dolphin were lighter, but used a fiberglass centerboard with a lead core in place of the

bronze Bronze is an alloy consisting primarily of copper, commonly with about 12–12.5% tin and often with the addition of other metals (including aluminium, manganese, nickel, or zinc) and sometimes non-metals (such as phosphorus) or metalloid ...

centerboard used by Yankee and O'Day. The Pacific Dolphin boats have more ballast and an outboard well instead of the optional inboard engine. The fuel tank holds and the fresh water tank has a capacity of . The design has sleeping accommodation for five people, with a double

"V"-berth A sleeping berth is a bed or sleeping accommodation on vehicles. Space accommodations have contributed to certain common design elements of berths. Beds in boats or ships While beds on large ships are little different from those on shore, ...

in the bow cabin, a drop down dinette table that converts to a double berth and a small straight settee in the main cabin. The

galley A galley is a type of ship optimised for propulsion by oars. Galleys were historically used for naval warfare, warfare, Maritime transport, trade, and piracy mostly in the seas surrounding Europe. It developed in the Mediterranean world during ...

is located on the port side at the

companionway In the architecture of a ship, a companion or companionway is a raised and windowed hatchway in the ship's deck, with a ladder leading below and the hooded entrance-hatch to the main cabins. A companionway may be secured by doors or, commonly i ...

ladder. The galley is equipped with an

icebox An icebox (also called a cold closet) is a compact non-mechanical refrigerator which was a common early-twentieth-century kitchen appliance before the development of safely powered refrigeration devices. Before the development of electric refrig ...

and a sink. The

head A head is the part of an organism which usually includes the ears, brain, forehead, cheeks, chin, eyes, nose, and mouth, each of which aid in various sensory functions such as sight, hearing, smell, and taste. Some very simple ani ...

is located just aft of the bow cabin on the starboard side. Cabin headroom is . The design has a

PHRF Performance Handicap Racing Fleet (PHRF) is a handicapping system used for yacht racing in North America. It allows dissimilar classes of sailboats to be raced against each other. The aim is to cancel out the inherent advantages and disadvantages ...

racing average handicap of 246 and a

hull speed Hull speed or displacement speed is the speed at which the wavelength of a vessel's bow wave is equal to the waterline length of the vessel. As boat speed increases from rest, the wavelength of the bow wave increases, and usually its crest-to- ...

of .

Operational history

The boat is supported by an active class club, the ''Dolphin 24 Class''. A review by Stephens Waring Yacht Design reported, "one a look at Olin Stephens near-perfect drawing shows why the Dolphin is such a dream to sail. She's moderately light for her time, at 4,250 pounds. Your SUV weighs more. And she can flash ample canvas: The sail area-to-displacement ratio is around 18.2, and conservative by today's standard, but she’s not at all under-canvased. These boats offer many combinations in sail power: symmetrical

spinnaker A spinnaker is a sail designed specifically for sailing off the wind on courses between a Point of sail#Reaching, reach (wind at 90° to the course) to Point of sail#Running downwind, downwind (course in the same direction as the wind). Spinna ...

s, multiple

jib A jib is a triangular sail that sets ahead of the foremast of a sailing vessel. Its forward corner (tack) is fixed to the bowsprit, to the bows, or to the deck between the bowsprit and the foremost mast. Jibs and spinnakers are the two main ty ...

s and overlapping

genoa Genoa ( ; ; ) is a city in and the capital of the Italian region of Liguria, and the sixth-largest city in Italy. As of 2025, 563,947 people live within the city's administrative limits. While its metropolitan city has 818,651 inhabitan ...

s and everything in between. And keep in mind she only draws 2' 10" with the center-board up. Meaning for the brave and the physical, she will push her hull speed with a skilled crew; her balanced helm is easy on the hand."

References

{{Trailer sailers and Trailer yachts worldwide Keelboats 1950s sailboat type designs Sailing yachts Trailer sailers Sailboat type designs by Sparkman and Stephens Sailboat type designs by William Shaw Sailboat types built in the United States Sailboat types built by O'Day Corp.

Production

Design

Operational history

See also

References