San Juan 21

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San Juan 21-2
San Juan 21 sailboat Iris 3793.jpg
San Juan 21-2
Development
Designer Don Clark
Location United States
Year1970
No. built2600 (all models)
Builder(s) Clark Boat Company
Role cruiser-racer
NameSan Juan 21-2
Boat
Displacement 1,250 lb (567 kg)
Draft 4.00 ft (1.22 m) with centerboard down
Hull
Type Monohull
Construction Fiberglass
LOA 20.50 ft (6.25 m)
LWL 17.50 ft (5.33 m)
Beam 7.00 ft (2.13 m)
Engine type Outboard motor
Hull appendages
Keel/board type centerboard
Ballast400 lb (181 kg)
Rudder(s)transom-mounted rudder
Rig
Rig type Bermuda rig
I foretriangle height22.50 ft (6.86 m)
J foretriangle base8.21 ft (2.50 m)
P mainsail luff23.00 ft (7.01 m)
E mainsail foot8.75 ft (2.67 m)
Sails
Sailplan Fractional rigged sloop
Mainsail area100.63 sq ft (9.349 m2)
Jib/genoa area92.36 sq ft (8.581 m2)
Total sail area192.99 sq ft (17.929 m2)
Racing
PHRF 252 (average)
[ edit on Wikidata]

The San Juan 21 is an American trailerable sailboat, that was designed by Don Clark as a cruiser-racer [1] and first built in 1970. [2] [3] [4]

Contents

Production

The design was built by the Clark Boat Company in Kent, Washington, United States, as well as eventually opening a facility in New Bern, North Carolina, [1] but it is now out of production. A total of 2600 San Juan 21s were completed. [1] [5] [ failed verification ] [2] [6]

The design was introduced at the 1970 Seattle Boat Show and was well received. [6]

Design

The San Juan 21 is a recreational keelboat, built predominantly of fiberglass with a balsa-cored cabin [1] and wood trim. It has a fractional sloop rig, a raked stem, a slightly reverse transom, a transom-hung rudder controlled by a tiller and a centerboard keel. [2] [3]

The boat has a draft of 4.00 ft (1.22 m) with the centerboard extended and 1.00 ft (0.30 m) with it retracted, allowing beaching or ground transportation on a trailer. [2]

The boat is normally fitted with a small 2 to 6 hp (1 to 4 kW) outboard motor for docking and maneuvering with racing oriented owners preferring lighter weight outboards as the boat is sensitive to weight astern. [2] [4] [7]

The design has sleeping accommodation for four people, with a double "V"-berth in the bow cabin and two quarter berths in the main cabin under the cockpit. The head is located just aft of the bow cabin on the starboard side. Cabin headroom is 42 in (107 cm). [4]

For sailing downwind the design may be equipped with a symmetrical spinnaker. [2]

The design has a hull speed of 5.52 kn (10.22 km/h). [8] [9]

Variants

San Juan 21 or Mark I

This model was introduced in 1970 and produced until 1977. It has a length overall of 20.50 ft (6.2 m), a waterline length of 17.50 ft (5.3 m), the design displacement was 1,250 lb (567 kg), but production displacement turned out to be 1,400 lb (635 kg). It carries 400 lb (181 kg) of ballast. The boat has a PHRF racing average handicap of 252 with a high of 246 and low of 258. [2] [8]
San Juan 21-2 San Juan 21 sailboat Iris 4253.jpg
San Juan 21-2

San Juan 21-2 or Mark II

This model was introduced in 1974 after about 1,000 of the Mark Is had been built. The Mark II has a raised deck over top of the cabin and has a smaller cockpit, with a commensurately larger cabin. The Mark II was produced alongside the Mark I until Mark I production ended in 1977. It has a length overall of 20.50 ft (6.2 m), a waterline length of 17.50 ft (5.3 m), displaces 1,250 lb (567 kg) and carries 400 lb (181 kg) of ballast. The boat has a PHRF racing average handicap of 252 with a high of 267 and low of 240. [3] [9]

San Juan Mark III

This model was the last update and uses the same Cabin top and Hull as the Mark II but, has a different pan arrangement inside the cabin as well as removal of the aft mounted lazarette on boats produced on the east coast, while west coast boats retained the lazarette. [1] :

Operational history

The boat is supported by an active class club that organizes racing events, the San Juan 21 Class Association . [10]

In a 2010 review Steve Henkel wrote, "the SJ21 has a very active racing association, unusual for a boat designed 30-plus years ago. An efficient foil-shaped rudder and swing keel, plus a sailcloth slot gasket, offer superior hydrodynamics compared with her comps. Worst features: The slot gasket, made of sailcloth (which bridges the gap across the trunk slot to prevent turbulence when sailing downwind with the keel raised), requires special maintenance (trimming of frayed edges and periodic replacement) to keep it smooth and effective. The advertised weight of 1,250 pounds may be low; some owners claim weights of 1,500 to 1,750 pounds." [4]

See also

Similar sailboats

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References

  1. 1 2 3 4 5 Robinson, Mike. "San Juan Sailboats and Clark Boat Company - PDF re printed from "Good Old Boat" magazine by permission" (PDF). Official San Juan 21 Class association. Archived (PDF) from the original on 30 December 2022.
  2. 1 2 3 4 5 6 7 Browning, Randy (2021). "San Juan 21 sailboat specifications and details". sailboatdata.com. Archived from the original on 17 December 2021. Retrieved 17 December 2021.
  3. 1 2 3 Browning, Randy (2018). "San Juan 21-2 sailboat specifications and details". sailboatdata.com. Archived from the original on 17 December 2021. Retrieved 17 December 2021.
  4. 1 2 3 4 Henkel, Steve: The Sailor's Book of Small Cruising Sailboats, pages 129-130. International Marine/McGraw-Hill, 2010. ISBN   978-0-07-163652-0
  5. ↑ Jensen, Stephen. "PGS Juan". San Juan 21 Fleet 1 Official Fleet Website. Archived from the original on 5 April 2023.
  6. 1 2 Browning, Randy (2021). "Clark Boat Company 1960-1984". sailboatdata.com. Archived from the original on 2 October 2020. Retrieved 17 December 2021.
  7. ↑ Jensen, Stephen. "Outboards". San Juan 21 Fleet 1 - Official Website. Archived from the original on 5 April 2023.
  8. 1 2 InterVisionSoft LLC (2018). "Sailboat Specifications for San Juan 21". Sailing Joy. Archived from the original on 29 September 2018. Retrieved 28 September 2018.
  9. 1 2 InterVisionSoft LLC (2018). "Sailboat Specifications for San Juan 21". Sailing Joy. Archived from the original on 29 September 2018. Retrieved 28 September 2018.
  10. ↑ McArthur, Bruce (2021). "San Juan 21 Class Association". sailboatdata.com. Archived from the original on 17 December 2021. Retrieved 17 December 2021.
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