Cal 40
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The Cal 40 is an American
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 Bill Lapworth as an offshore racer and first built in 1963. The boat became an acclaimed racer and was also a commercial success. ''Sailboatdata'' terms it, "one of the most influential designs and successful racing boats ever".


Production

The design was commissioned by George Griffith, a successful racing sailor, who was a member of
Los Angeles Yacht Club Los Angeles Yacht Club is a yacht club located in San Pedro, Los Angeles (United States). The club is a charter member of the Southern California Yachting Association. History Los Angeles Yacht Club was founded in 1901 as South Coast Yacht Cl ...
. It is said that Griffith sketched the design on the back of a napkin and showed it to Bill Lapworth who designed the boat. The design was offered to a number of builders, who declined to build it. Griffith agreed to back the building of the first ten boats constructed, which convinced Jack Jensen to start production. The design was built by Jensen Marine in the
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, from 1963 until 1971, with 108 boats completed, but it is now out of production.


Design

The Cal 40 is a racing
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 spooned,
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, transom; an internally mounted spade-type
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 fin
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 ...
. It displaces and carries of lead ballast. The flat-bottomed hull design allows sustained wave surfing and commensurate high speeds. A raised-deck version was also designed, but, despite orders, only one was built and later orders were cancelled. The boat has a draft of with the standard keel. The boat is fitted with a British
Perkins Engines Perkins Engines Company Limited is primarily a diesel engine manufacturer for several markets including agricultural, construction, material handling, power generation, and Industrial sector, industrial. It was established in Peterborough, Eng ...
4108
diesel engine The diesel engine, named after the German engineer Rudolf Diesel, is an internal combustion engine in which Combustion, ignition of diesel fuel is caused by the elevated temperature of the air in the cylinder due to Mechanics, mechanical Compr ...
of for docking and maneuvering. The design has sleeping accommodation for eight 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, two straight settee berths and two
pilot 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, ...
s in the main cabin and two berth aft. 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. A navigation station is opposite the galley, on the starboard side. 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 port side. For sailing downwind the design may be equipped with a 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 ...
. The design has 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 design has won many races, including the 1964
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,
Newport Bermuda Race The Newport Bermuda Race, commonly known as the ''Bermuda Race'', is a biennial, 635 nautical miles (1175 km) sailing yacht race from Newport, Rhode Island to the British island of Bermuda. The Race is the oldest regularly scheduled ocean ...
and the
Transpacific Yacht Race The Transpacific Yacht Race (Transpac) is a biennial offshore yacht race held in odd-numbered years starting off the Pt. Fermin buoy in San Pedro, California and ending off Diamond Head in Hawaii, a distance of around . In even-numbered years the ...
, among others. Tom Burden notes, "Cal 40s have twice achieved the record of being the biggest one-design fleet ever in the biennial Transpac Race, with 14 boats in 1966 and 2005." In a 2020 review Tom Burden wrote, "today the Cal 40 has attained true 'cult' status as a design that is sought after, restored and passed down through multiple generations of families. Try searching for Cal 40s that are for sale on Yachtworld and other sites, and you'll likely come up empty. Folks spend multiple years and a quarter of a million dollars restoring Cal 40s and fitting them out with the latest sails, gear and electronics ... The Cal 40 has endured because it is not only a relatively quick downwind raceboat, but also a sweet-sailing light cruiser that, in the words of Cal 40 owner
Stan Honey Stan Honey (born April 8, 1955) is an American professional offshore navigator with world sailing records and a businessman who founded Etak and Sportvision. Honey's track record as a navigator includes a victory in the 2005-06 Volvo Ocean Rac ...
, 'has no bad habits.' It steers beautifully under autopilot — plus it is rare to find a tiller-steered 40-ft sailboat, especially one with a light helm."


See also

*
List of sailing boat types The following is a partial list of sailboat types and sailing classes, including keelboats, dinghy, dinghies, and multihull (catamarans and trimarans). Olympic classes World Sailing Classes Historically known as the IYRU (International Yacht ...


References

{{Cal Yachts Keelboats 1960s sailboat type designs Sailing yachts Sailboat type designs by Bill Lapworth Sailboat types built by Cal Yachts