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- Sailboat Guide
Sirius 21/22
Sirius 21/22 is a 20 ′ 11 ″ / 6.4 m monohull sailboat designed by Hubert Vandestadt and built by Vandestadt and McGruer Ltd. between 1977 and 1987.
Rig and Sails
Auxilary power, accomodations, calculations.
The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.
Classic hull speed formula:
Hull Speed = 1.34 x √LWL
Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL
Sail Area / Displacement Ratio
A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.
SA/D = SA ÷ (D ÷ 64) 2/3
- SA : Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
- D : Displacement in pounds.
Ballast / Displacement Ratio
A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.
Ballast / Displacement * 100
Displacement / Length Ratio
A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.
D/L = (D ÷ 2240) ÷ (0.01 x LWL)³
- D: Displacement of the boat in pounds.
- LWL: Waterline length in feet
Comfort Ratio
This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.
Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )
- D: Displacement of the boat in pounds
- LOA: Length overall in feet
- Beam: Width of boat at the widest point in feet
Capsize Screening Formula
This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.
CSV = Beam ÷ ³√(D / 64)
Vandestadt & McGruer was the Canadian importer of the American built MacGregor line of trailerable sailboats in early 1970s. The company also built the SIREN 17. The SIRIUS 21/22 is said to be the first North American production-built, ballasted cruising boat with positive flotation. In a more expensive procedure, closed-cell foam was injected into some compartments, then into the gap between the inner and outer hull the full length and up to the deck level. In the early 1980s, the hull was modified to include a reverse sheer transom at which point the boat was renamed the SIRIUS 22. A fixed-keel model was also offered.
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Specifications SIRIUS 21/22 (CAN)
1977 - 21.00 ft / 6.40 m - Vandestadt - Vandestadt and McGruer Ltd.
SIRIUS 21/22 (CAN) Sailboat Data
Hull Type: Swing Keel Rigging Type: Masthead Sloop LOA: 21.00 ft / 6.40 m LWL: 18.75 ft / 5.72 m S.A. (reported): 205.00 ft² / 19.05 m² Beam: 7.92 ft / 2.41 m Displacement: 2,000.00 lb / 907 kg Ballast: 525.00 lb / 238 kg Max Draft: 5.00 ft / 1.52 m Min Draft: 1.33 ft / 0.41 m Construction: FG Ballast Type: Iron First Built: 1977 Last Built: 1987 # Built: 500 Builder: Vandestadt and McGruer Ltd. Designer: Vandestadt
Information from sailboatdata.com .
Hull Speed: 5.80 kn
Sirius 21 with Pop Top cabin, on trailer
Price: $7,500, location: perth, ontario..
General Information
Make of Vessel: Sirius 21
Manufacturer: Vandestadt and McGruer Ltd.
Designer: Vandestadt
Hull Discription: Fiberglass
Engine: 7.7 HP Honda with charging coil
Builders Dimensions
Builder’s LOA: 21 feet
Builder’s Beam: 7 feet 9 inches
Builder’s draught: 5 feet
Rig Type: Masthead Sloop
Disp: 2000 Lbs.
Ballast: 525 Lbs.
Found on Board
Sails - main sail, jib and genoa (current rigged for furling).
Pop top cabin enclosure
Depth Sounder: Standard Communicatoin Horizon.
YHF Marine Radio: Ray Jefferson model 5000M
TV Box: Platinum (Recieves colour tv signals and play through Acer monitor).
AM/FM/DVD/DIVX/MP4 Stereo: Innotovatek.
Lights located fore and aft, navigation lights
Fire extinguisher
Marine chemical toilet with pump out
Manual water pump
Retractable galley table which turns into a double bed. V-berth sleeping for two adults. Port side with quarter berth.
Trailer is a dual axes cumstom, with electronic brakes and extendable tougue for easy maneuvering.
Privateer Yacht Sales offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to prior sale, price change, or withdrawal without notice
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Peter Milley, President of Brigantine Inc/ Canadian Tallship Expeditions is past Chairman of the Canadian Sail Training Association. An Individual Member and Director of CSTA was elected Dec 17, 2011 to the executive as Secretary of this organization representing Canadian Tallships and sail training vessels.
Brigantine Inc/Canadian Tallship Expeditions and the Sail Training Vessel, St Lawrence II participated in all the Canada 150 Tall ship port events on the Great Lakes and Maritimes in 2017. During 2018 to present, we have operated in the Great Lake and upper Gulf of St. Lawrence with trainees from across Canada. This included a number of youths from Nunavut and the Yukon Territories. If you have a son, daughter or grandchild interested in a life changing tallship experience, with an Brigantineintroduction to a professional marine career log into www.brigantine.ca to book a berth for 2024 to sail Newfoundland and Labrador waters and visit the French Islands of St Pierre and Miquelon. Visit us at Portsmouth Olympic Harbour join the fun. Brigantine Inc. founded 1954 ,is the oldest contineous traditional sail training program in the western hemisphere.
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The Brigantine Inc. website has the 2024 sailing schedule; www.brigantine.ca Fair winds and following seas in 2023. Book now to sail with youth from across Canada from Lunenburg Nova Scotia to Newfoundland and Labrador waters with a visit to the French Islands of St Pierre and Miquelon.
We are quickly advancing into the 2024 sailing season and it's a great time to purchase. Don't miss out.. It's a "buyers market" and there are deals to be had . Attention US Buyers; Looking for a particular boat? Call and we will find it! Take advantage of the great exchange rates while you can. Let us assist you with the hurdles of importing a boat from Canada into the US. West Coast Canada Buyers: Let us arrange shipping. Used boats in Eastern Canada are plentlyful and the price of shipping can offset by the high price of west coast boats. For those wishing to sell contact us right away and don't wait any longer to list your boat! Let us help to ensure your boat sells at the first available opportunity. Please check our charity donation boat page to donate your boat to assist Briganitne Inc.s not-for-profit traditional sail training program for Kingston and Eastern Ontario youth.
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Learn about the SIRIUS 21/22, a swing-keel, masthead sloop with positive flotation and a reverse sheer transom. Find out its hull type, rigging, construction, design, and more from sailboatdata, a comprehensive online resource for sailboat information.
Sirius 21/22 is a 6.4 m monohull sailboat designed by Hubert Vandestadt and built by Vandestadt and McGruer Ltd. between 1977 and 1987. It is a ballasted cruiser with positive flotation and a reverse sheer transom, and has a reported sail area of 19.1 m².
The Sirius 21/22 is a Canadian-built trailer sailboat with positive flotation and foam-injection construction. It has a roomy cockpit, full standing headroom, and a 525-lb. lifting keel. It can be sailed on the highway or on local waters, and has a large interior for family holidays or weekend sailing.
In a 2002 review Paul Howard wrote, "one gem is the Sirius 21/22 built by Vandestadt and McGruer Ltd. of Owen Sound, Ont. a company which had a strong 25-year history before finally closing its doors in 1987. Designed at Vandestadt, the Sirius 21/22 was an innovative boat and indeed is said to be the first North American production-built ...
Tour of my 1979 Sirius 21. The Sirius 21 is a trailer sailer/compact cruiser designed and built here in Ontario. I've owned it nearly a year and it's been a ...
The Sirius 21 became the first North American production sailboat to use both ballast and positive flotation. Closed-cell foam was injected into some of the boat's compartments and also in between the inner and outer hull to accomplish this, a feature that added cost, but improved safety.
Learn about the Sirius 21, a 25 foot trailerable sailboat designed by Vandestadt & McGruer and built by MacGregor in the 1970s. Find out its specifications, features, history, and price range on the used market in Canada.
SIRIUS 21/22 (CAN) Sailboat Data Hull Type: Swing Keel Rigging Type: Masthead Sloop LOA: 21.00 ft / 6.40 m LWL: 18.75 ft / 5.72 m S.A. (reported): 205.00 ft² / 19.05 ...
Sail Pack Kit - Standard Sunbrella® Color (10' Boom) Spinnaker Sock Kit 24' 1" to 27'. Foredeck Sail Bag Kit - Standard Sunbrella® Color (For Boats up to 30') Complete Sail Plan Data for the Sirius 21 Sail Data. Sailrite offers free rig and sail dimensions with featured products and canvas kits that fit the boat.
Sirius 21 with Pop Top cabin, on trailer Price: $7,500 Location: Perth, Ontario. General Information. Make of Vessel: Sirius 21. Manufacturer: Vandestadt and McGruer Ltd. Designer: Vandestadt. Hull Discription: Fiberglass. Engine: 7.7 HP Honda with charging coil. Builders Dimensions. Builder’s LOA: 21 feet. Builder’s Beam: 7 feet 9 inches ...