Sirus 21

Sirus 21

Description

The Sirius 20, 21 and 22 are a family of Canadian trailerable sailboats that was designed by Hubert Vandestadt for cruising and first built in 1976. The series of boats was built by Vandestadt and McGruer Limited in Owen Sound, Ontario, Canada, from 1976 until 1987 when the company went out of business. More than 600 boats were completed. This recreational keelboat features fiberglass construction with wood trim and aluminum spars, incorporating a masthead sloop rig configuration. They all have transom-hung, kick-up rudders controlled by a tiller and iron swing keels that can be locked down. A fixed, lead, fin keel was an option on the 21 and 22. All models displace 2,000 lb (907 kg), carry 525 lb (238 kg) of iron ballast and are normally fitted with a small outboard motor for docking and maneuvering. The swing keel system provides exceptional versatility with drafts of 5.00 ft (1.52 m) with the keel down and 1.33 ft (0.41 m) with it retracted. The design has sleeping accommodations for five people, plus a dinette table and a galley.

Construction Details

Designer Hubert Vandestadt
Builder Vandestadt & McGruer Ltd (Canada)
Length 21.170 ft
LOA 21.170 ft
LWL 19.690 ft
Beam 8.200 ft
Displacement 2646 lb
Ballast 525 lb
Max Draft 4.100 ft
Year Built 1976
Notes LOA 21' 2" 6.45 m LWL 18' 9" 5.71 m Beam 7' 11" 2.41 m Draft 16" to 5' 0" 1.52 m Displacement 2000 lbs. 907 kg. Ballast 525 lbs. 238 kg.
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The standard boat dimensions

i 25 ft
j 8.50 ft
p 22 ft
e 9 ft
p2 -
e2 -
i2 -
j2 -

Sails

Sirus 21 - MAINSAIL

Luff * 22 ft - (6706 mm)
Foot * 9 ft - (2743 mm)
Leech * 23.29 ft - (7099 mm)
Tack Angle * 88 °
Diagonal * 23.48 ft - (7157 mm)
Head (inches) * 4 in - (102 mm)
Area * 102.14 ft²
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Sirus 21 - JIBSAIL

Luff 21.5 ft - (6553 mm)
Foot 9.92 ft - (3024 mm)
Leech 18.5 ft - (5639 mm)
Percentage LP * 100.24 %
Length Perpendicular * 8.52 ft - (2597 mm)
Deck Angle * 12.02 °
Area * 91.6 ft²
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Sirus 21 - JIBSAIL

Luff 22 ft - (6706 mm)
Foot 11.33 ft - (3453 mm)
Leech 19 ft - (5791 mm)
Percentage LP * 115.06 %
Length Perpendicular * 9.78 ft - (2981 mm)
Deck Angle * 11.5 °
Area * 107.63 ft²
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Sirus 21 - GENOA

Luff 24.5 ft - (7468 mm)
Foot 12 ft - (3658 mm)
Leech 22.75 ft - (6934 mm)
Percentage LP * 130.24 %
Length Perpendicular * 11.07 ft - (3374 mm)
Deck Angle * 3.9 °
Area * 135.64 ft²
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Sirus 21 - GENOA

Luff * 25.09 ft - (7647 mm)
Foot * 13.83 ft - (4215 mm)
Leech * 23.49 ft - (7160 mm)
Percentage LP * 150 %
Length Perpendicular * 12.75 ft - (3886 mm)
Deck Angle * 4.03 °
Area * 159.93 ft²
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Sirus 21 - GENOA

Luff 24.75 ft - (7544 mm)
Foot 12.42 ft - (3786 mm)
Leech 23 ft - (7010 mm)
Percentage LP * 134.71 %
Length Perpendicular * 11.45 ft - (3490 mm)
Deck Angle * 3.98 °
Area * 141.73 ft²
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Sirus 21 - ASYMMETRICAL

Luff 26 ft - (7925 mm)
Foot 15 ft - (4572 mm)
Leech 23.5 ft - (7163 mm)
Perc LP * 165 %
Area * 292 ft²
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Sirus 21 - STORMJIB

Luff * 14.52 ft - (4426 mm)
Foot * 6.19 ft - (1887 mm)
Leech * 12.14 ft - (3700 mm)
Perc LP * 60 %
Length Perp * 5.1 ft - (1554 mm)
Deck Angle * 15.7 °
Area * 37.04 ft²
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Sirus 21 - STORMTRYSAIL

Luff * 9.1 ft - (2774 mm)
Foot * 8.37 ft - (2551 mm)
Leech * 7.59 ft - (2313 mm)
Length Perp * 7.59 ft - (2313 mm)
Tack Angle * -25 °
Area * 30 ft²
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Disclaimer. Boats are not all the same -- even when produced in the same factory of the same model. Sailrite does its best to publish accurate dimensions, but we often find it worthwhile to have our customers measure their boats carefully before we produce kits for them. You should take the same precautions, especially when the data is not from Sailrite. The information on this site is not guaranteed to be accurate. Sailrite offers this content as a service to our community, but takes no responsibility for the reliability of the data provided.

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