In sailing, a snow, snaw or snauw is a square-rigged vessel with two masts, complemented by a snow- or trysail-mast stepped immediately abaft the main mast.
1759 painting of a Royal Navy snow in two positions by Charles Brooking
The "snow-brig" USS Niagara (center) in 1913
USS Niagara, commonly called the U.S. Brig Niagara or the Flagship Niagara, is a wooden-hulled snow-brig that served as the relief flagship for Oliver Hazard Perry in the Battle of Lake Erie during th
Snow (ship)
…which point the term "snow-brig" gradually became interchangeable with the term "brig" and the term "snow" fell in disuse. The twin brigs Lawrence and Niagara, American warships which participated in the Battle of Lake Erie in 1813, were both snow-brigs. In Patrick O'Brian's 1969 novel Master and Commander…
US Brig Niagara near Put-in-Bay, Ohio in June 2009
Brig Niagara firing its cannons, off of Put-in-Bay, Ohio
Battle of Lake Erie, Ballou's Pictorial 1856
Painting by William Henry Powell depicting Perry's transfer to Niagara during the Battle of Lake Erie.