Engineering:San Juan 24

From HandWiki
Short description: Sailboat class
San Juan 24
SJ24racing.jpg
Development
DesignerBruce Kirby
LocationUnited States
Year1973
No. built1200
Builder(s)Clark Boat Company
Boat
Boat weight3,200 lb (1,451 kg)
Draft4.00 ft (1.22 m)
Hull
TypeMonohull
ConstructionFiberglass
LOA24.00 ft (7.32 m)
LWL19.50 ft (5.94 m)
Beam8.00 ft (2.44 m)
Engine typeOutboard motor
Hull appendages
Keel/board typefin keel
Ballast1,650 lb (748 kg)
Rudder(s)internally-mounted spade-type rudder
Rig
Rig typeBermuda rig
I (foretriangle height)30.00 ft (9.14 m)
J (foretriangle base)9.50 ft (2.90 m)
P (mainsail luff)26.00 ft (7.92 m)
E (mainsail foot)8.00 ft (2.44 m)
Sails
SailplanMasthead sloop
Mainsail area104.00 sq ft (9.662 m2)
Jib/genoa area142.50 sq ft (13.239 m2)
Total sail area246.50 sq ft (22.901 m2)
Racing
PHRF219 (average)

The San Juan 24 is an American trailerable sailboat that was designed by Bruce Kirby as an International Offshore Rule Quarter Ton class racer.[1][2][3]

The design was later developed into the more cruising-oriented San Juan 23 in 1975.[4]

Production

The design was built by the Clark Boat Company in Kent, Washington, United States , starting in 1973 but it is now out of production. A total of 1200 examples of the design were built.[1][5]

Design

The San Juan 24 is a recreational keelboat, built predominantly of fiberglass, with wood trim. It has a masthead sloop rig, a raked stem, a raised reverse transom, an internally-mounted spade-type rudder controlled by a tiller and a fixed fin keel. It displaces 3,200 lb (1,451 kg) and carries 1,650 lb (748 kg) of lead ballast.[1]

The boat has a draft of 4.00 ft (1.22 m) with the standard keel fitted and is normally fitted with a small 3 to 6 hp (2 to 4 kW) outboard motor for docking and maneuvering.[1][3]

The design has sleeping accommodation for five people. Cabin headroom is 54 in (137 cm).[3]

The design has a PHRF racing average handicap of 219 with a high of 231 and low of 216. It has a hull speed of 5.92 kn (10.96 km/h).[6]

Operational history

In a 2010 review Steve Henkel wrote, "Don Clark, designer of the San Juan 21 Mk I and II ... and owner of the Clark Boat Company of Kent, WA, went to Bruce Kirby for a hot new racer to be designed to the IOR Quarter Ton Rule. Clark imposed two important restrictions to broaden the market beyond the macho racer group: the boat could not draw more than 4' 0" or be wider than 8' 0", making the boat more useable in shoal waters and making trailering a little easier. Best features: The boat has been a success (and, at least so far, is the most popular quarter tonner ever), with over a thousand sailing, Worst features: Although she is fast and weatherly going upwind, dead downwind in heavy air under spinnaker she can be a little squirrelly, possibly a result of her narrow underbody aft."[3]

See also

Similar sailboats

References

  1. 1.0 1.1 1.2 1.3 Browning, Randy (2018). "San Juan 24 sailboat specifications and details". sailboatdata.com. https://sailboatdata.com/sailboat/san-juan-24. Retrieved 29 September 2018. 
  2. Browning, Randy (2018). "Bruce Kirby". sailboatdata.com. https://sailboatdata.com/designer/kirby-bruce. Retrieved 29 September 2018. 
  3. 3.0 3.1 3.2 3.3 Henkel, Steve: The Sailor's Book of Small Cruising Sailboats, page 261. International Marine/McGraw-Hill, 2010. ISBN:978-0-07-163652-0
  4. McArthur, Bruce (2021). "San Juan 23 sailboat". sailboatdata.com. https://sailboatdata.com/sailboat/san-juan-23. 
  5. Browning, Randy (2018). "Clark Boat Company 1960-1984". sailboatdata.com. https://sailboatdata.com/builder/clark-boat-company. Retrieved 29 September 2018. 
  6. InterVisionSoft LLC (2018). "Sailboat Specifications for San Juan 24". Sailing Joy. http://www.sailingjoy.com/sailboat_specs/sailboat_specs/view/421/san-juan-24. Retrieved 29 September 2018.