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.

[1][2][3][4][5] 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.

[5] In a 1994 review, Richard Sherwood wrote: "The Sirius is built in Ontario and is mostly found on the Great Lakes.

Sirius has a wide beam; and this, combined with the hard bilge and a retractable cast-iron keel, gives good stability.

"[4] In a 2002 review Paul Howard wrote, "one gem is the Sirius 21/22 built by Vandestadt and McGruer Ltd. of Owen Sound, Ont.

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.