These monitors or cannons were not only used to help fight fires on boats, but also used for anti-piracy. Marked along the base W. Dates to the 20th century in very good overall condition, with some verdigris in areas, surface dents and dings, and expected surface wear from age and use. Dimensions: 58.5 in H (fully upright) on a 15 in square wooden base. A great addition to your firefighting or nautical collection! New Hampshire Antique Co-op. A local family business since 1983. Best of New England. The item “20th Century Bronze and Copper Marine Fire Monitor or Water Cannon” is in sale since Tuesday, November 10, 2020. This item is in the category “Collectibles\Transportation\Boats & Ships\Military\Other Naval Collectibles”. The seller is “nhantiquecoop” and is located in Milford, New Hampshire. This item can be shipped to United States.