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The International Brotherhood of Boilermakers, Iron Ship Builders, Blacksmiths, Forgers and Helpers was founded on September 1, 1893. On that day, at a meeting in Chicago, Illinois, representatives from the International Brotherhood of Boiler Makers and Iron Ship Builders, which had been organized on October 1, 1880, and the National Brotherhood of Boiler Makers, which had been formed in ...
Mines can be laid in many ways: by purpose-built minelayers, refitted ships, submarines, or aircraft—and even by dropping them into a harbour by hand. They can be inexpensive: some variants can cost as little as US $2,000, though more sophisticated mines can cost millions of dollars, be equipped with several kinds of sensors, and deliver a warhead by rocket or torpedo.
A forge is a type of hearth used for heating metals, or the workplace (smithy) where such a hearth is located. The forge is used by the smith to heat a piece of metal to a temperature at which it becomes easier to shape by forging , or to the point at which work hardening no longer occurs.
With the development of the carrack, the west moved into a new era of ship construction by building the first regular oceangoing vessels. In a relatively short time, these ships grew to an unprecedented size, complexity, and cost. Shipyards became large industrial complexes, and the ships built were financed by consortia of investors.
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The strength of ships is a topic of key interest to naval architects and shipbuilders. Ships which are built too strong are heavy, slow, and cost extra money to build and operate since they weigh more, whilst ships which are built too weakly suffer from minor hull damage and in some extreme cases catastrophic failure and sinking.
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