Brazilian battleship Minas Geraes in the context of National Congress of Brazil

Ceremonial ship launching involves the performing of ceremonies associated with the process of transferring a vessel to the water. It is a nautical tradition in many cultures, dating back millennia, to accompany the physical process with ceremonies which have been observed as public celebration and a solemn blessing, usually but not always, in association with the launch itself.

Ship launching imposes stresses on the ship not met during normal operation and in addition to the size and weight of the vessel represents a considerable engineering challenge as well as a public spectacle. The process also involves many traditions intended to invite good luck, such as christening by breaking a sacrificial bottle of champagne over the bow as the ship is named aloud and launched.

A naval arms race among Argentina, Brazil, and Chile—the wealthiest and most powerful countries in South America—began in the early twentieth century when the Brazilian government ordered three dreadnoughts, formidable battleships whose capabilities far outstripped older vessels in the world's navies.

In 1904, the Brazilian legislature allocated substantial funds to improve the country's naval forces. Proponents of this plan believed that they needed a strong navy to become an international power and counter recent expansions of the Argentine and Chilean navies. The revolutionary design of the 1906 British warship HMS Dreadnought prompted the Brazilians to alter these plans and redirect their money into constructing three Minas Geraes-class dreadnoughts. These warships, the most powerful in the world, entered service at a time when dreadnoughts were an important factor in a nation's international prestige and therefore brought global attention to Brazil.