Flush deck

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Flush deck is a term in naval architecture. It can refer to any deck of a ship which is continuous from stem to stern.^{[citation needed]}

History

Flush decks have been in use since the times of the ancient Egyptians. Greco-Roman Trireme often had a flush deck but may have also had a fore and aft castle deck. Flush decks were also common on medieval and Renaissance galleys but some also featured fore and aft castle decks. The medieval Brigantine and later Brig and Snow ships also featured flush decks. The flush deck design originated with rice ships built in Bengal Subah,^{[citation needed]} Mughal India (modern Bangladesh), resulting in hulls that were stronger and less leak-prone than stepped deck ships.^{[citation needed]}. This was a key innovation in shipbuilding. The British East India Company duplicated the flush deck design in the 1760s, leading to significant improvements in seaworthiness of British ships during the Industrial Revolution.^[1]

Two different meanings of "flush"

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"Flush deck" with "flush" in its generic meaning of "even or level; forming an unbroken plane", is sometimes applied to vessels, as in describing yachts lacking a raised pilothouse for instance. "Flush deck aircraft carrier" uses "flush deck" in this generic sense.

"Flush deck" in its more specific maritime-architecture sense denotes (for instance) the flush deck destroyers described above: the flush decks are broken by masts, guns, funnels, and other structures and impediments, and are far from being unbroken planes. "Flush deck" in this sense only signifies that the main deck runs the length of the ship and does not end before the stem (with a separate raised forecastle deck forward) or before the stern (with a separate raised or, as seen on many modern warships, lowered quarterdeck rearward).

Types

It has two specific common referents:

• Flush deck aircraft carriers are those with no island superstructure, so that the top deck of the vessel consists of only an unbroken flight deck.^[2]
• "Flush deckers" is a common nickname for a series of American destroyers built in large quantities during or shortly after World War I – the Caldwell, Wickes, and Clemson classes – so called because they lacked the raised forecastle of preceding American destroyers, thus the main deck was a flush deck.^[3]

References

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