Floodability is reduced by dividing the volume of the hull into watertight compartments with decks and bulkheads (which also increase the strength of ships), use of double bottom, and by other means. If a ship's hull is divided into watertight compartments, any flooding resulting from a breach of the hull can be contained in the compartments where the flooding occurs. As long as the flooding is localised, this can allow a ship to retain sufficient buoyancy to remain afloat.
The Song Dynasty Chinese author Zhu Yu wrote of watertight compartments in his book, Pingzhou Table Talks, written from AD 1111 to 1117 and published in 1119. Watertight compartments were frequently implemented in Asian ships, and had been implemented in the warships of Kubla Khan. Chinese seagoing junks often had 14 crosswalls, some of which could be flooded to increase stability or for the carriage of liquids.
- by Authority of the Lords Commissioners of the Admiralty (June 1943). A Seaman's Pocket-Book. London: HMSO. pp. 11–12.
- Sten Sjostrand & Claire Barnes. "Chronology of Asian maritime history". Retrieved 1 June 2015.
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- Colin Ronan; Joseph Needham (1986), The shorter Science and Civilisation in China 3, C.U.P., pp. 70–77
- Спрямление корабля ч.2 Энциклопедия мореплапания // Encyclopedia of seafaring (Russian)
- Mike Botchev Short biography of A.N. Krylov
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