Ensiklopedia Dunia

Technopedia Center

Faculty of Engineering and Computer Science
S1 Informatics S1 Information Systems S1 Information Technology S1 Computer Engineering S1 Electrical Engineering S1 Civil Engineering

faculty of Economics and Business
S1 Management S1 Accountancy

Faculty of Letters and Educational Sciences
S1 English literature S1 English language education S1 Mathematics education S1 Sports Education

Cal 20 - Wikipedia

From Wikipedia, the free encyclopedia

Cal 20
Development
Designer	C. William Lapworth
Location	United States
Year	1961
No. built	1,945
Builder(s)	Cal Yachts Calgan Marine
Name	Cal 20
Boat
Displacement	1,950 lb (885 kg)
Draft	3.33 ft (1.01 m)
Hull
Type	Monohull
Construction	Fiberglass
LOA	20.00 ft (6.10 m)
LWL	18.00 ft (5.49 m)
Beam	7.00 ft (2.13 m)
Engine type	Outboard motor
Hull appendages
Keel/board type	fin keel with bulb
Ballast	900 lb (408 kg)
Rudder(s)	transom-mounted rudder
Rig
General	Fractional rigged sloop
I foretriangle height	22.00 ft (6.71 m)
J foretriangle base	7.30 ft (2.23 m)
P mainsail luff	23.00 ft (7.01 m)
E mainsail foot	10.00 ft (3.05 m)
Sails
Mainsail area	115.00 sq ft (10.684 m²)
Jib/genoa area	80.30 sq ft (7.460 m²)
Total sail area	195.30 sq ft (18.144 m²)
Racing
PHRF	279 (average)
[edit on Wikidata]

The Cal 20 is an American sailboat, that was designed by C. William Lapworth and first built in 1961.^[1]^[2]

Production

The boat was built by Cal Yachts in the United States from 1961 to 1975, but it is now out of production.^[1]^[3]

The Cal 20 was seen by Canadian Al Nairne during a visit to California. Nairne convinced Jack Jensen of Jensen Marine to allow him to produce the Cal 20 under licence in Canada and formed Calgan Marine in North Vancouver for that purpose. Calgan Marine went on to produce many Cal Yachts designs, plus designs of its own.^[1]^[4]

A total of 1,945 Cal 20s were built during its 14-year production run.^[1]

Design

The Cal 20 is a small recreational keelboat, built predominantly of fiberglass. It has a fractional sloop rig, a transom-hung rudder and a fixed fin keel with a weighted bulb. It displaces 1,950 lb (885 kg) and carries 900 lb (408 kg) of ballast.^[1]

The boat has a draft of 3.33 ft (1.01 m) with the standard keel fitted and is normally fitted with a small outboard motor for docking and maneuvering.^[1]

The boat has a PHRF racing average handicap of 279 with a high of 291 and low of 270. It has a hull speed of 5.69 kn (10.54 km/h).^[5]

Operational history

In a 2010 review Steve Henkel wrote, "best features: She is fast and easy to sail. A 46% B/D ratio, with a bulb keel concentrating her ballast low, gives her good stability. An outboard well located in the cockpit keeps the engine under the helmsman’s control. And for those looking for camaraderie, the big network of Cal 20 fleets (largely on the West Coast) will be attractive. Worst features: Fin keel with bulb makes the boat a chore to launch at shallow ramps. Also, the boats are among the oldest fiberglass boats around, and most will require more strenuous than ordinary maintenance to keep in top condition. The keel (made of iron, which rusts), keel bolts, and surrounding fiberglass are common causes of concern."^[6]

References

^ ^a ^b ^c ^d ^e ^f Browning, Randy (2018). "Cal 20 sailboat specifications and details". sailboatdata.com. Archived from the original on 24 March 2022. Retrieved 7 February 2018.
^ Browning, Randy (2018). "C. William Lapworth". sailboatdata.com. Archived from the original on 23 January 2021. Retrieved 7 February 2018.
^ Browning, Randy (2018). "Jensen Marine/Cal Boats 1956-1989". sailboatdata.com. Archived from the original on 23 January 2021. Retrieved 7 February 2018.
^ Browning, Randy (2018). "Calgan Marine Ltd. (CAN) 1962-1979". sailboatdata.com. Archived from the original on 24 March 2022. Retrieved 7 February 2018.
^ InterVisionSoft LLC (2018). "Sailboat Specifications for Cal 20". Sailing Joy. Archived from the original on 8 February 2018. Retrieved 2 February 2018.
^ Henkel, Steve: The Sailor's Book of Small Cruising Sailboats, page 89. International Marine/McGraw-Hill, 2010. ISBN 978-0-07-163652-0

v t e Cal Yachts and Jensen Marine boats
Imperial length sailboats	20 21 22 24 2-24 3-24 25 2-25 27 2-27 3-27 28 29 2-29 35 35 Cruise 39 39 Mk II 39 Mk III 39 (Hunt/O'Day) 40
Metric length sailboats	9.2
Other designation sailboats	T/4
People	Bill Lapworth

Categories:

Hidden categories:

v t e Calgan Marine boats
Cal Yachts sailboats (under licence)	20 25 28 29
Crown series sailboats	23 28 34
Calgan series sailboats	23

Production

Design

Operational history

See also

References