a log measures a ship's speed through the water

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• Chip log — A chip log, also called common log, ship log or just log, is a navigation tool used by mariners to estimate the speed of a vessel through water. Contents 1 Construction 2 Usage 3 Origins …   Wikipedia

• ground log — noun : a ship s log for use in shallow water and strong currents in which the chip is replaced by a sinker that rests on the bottom and measures speed over the ground rather than through the water * * * Naut. a lead weight attached to a line,… …   Useful english dictionary

• Steamboats of the Mississippi — GeographyThe Mississippi is one of the world’s great rivers. It spans 3860 miles of length as measured using its northernmost west fork, the Missouri River, which starts in the Rocky Mountains in Montana, joining the Mississippi proper in the… …   Wikipedia

• Economy of the People's Republic of China — Economies of Special Administrative Regions of Hong Kong and Macau are administered separately from the rest of People s Republic of China. Therefore, the information below pertains only to mainland China unless specified otherwise. For the… …   Wikipedia

• navigation — navigational, adj. /nav i gay sheuhn/, n. 1. the act or process of navigating. 2. the art or science of plotting, ascertaining, or directing the course of a ship, aircraft, or guided missile. [1520 30; < L navigation (s. of navigatio) a voyage.… …   Universalium

• Nautical mile — 1 nautical mile = SI units 1.85200 km 1,852.00 m US customary / Imperial units 1.15078 mi 6,076.12 ft The nautical mile (symbol M, NM or nmi) is a unit of length that is about one minute of arc of latitude along a …   Wikipedia

• Underwater acoustics — The field of underwater acoustics is closely related to a number of other fields of acoustic study, including sonar, transduction, acoustic signal processing, acoustical oceanography, bioacoustics, and physical acoustics.HistoryUnderwater sound… …   Wikipedia

• Pearl Harbor advance-knowledge debate — The Pearl Harbor advance knowledge debate is a dispute over what, if any, advance knowledge American officials had of Japan s December 7, 1941 attack on Pearl Harbor.Ever since the Japanese attack there has been debate as to how and why the… …   Wikipedia

• List of minor One Piece characters — The following is a list of minor characters in the manga and anime series One Piece : AisaAisa (アイサ) is a small girl and, since she was born, she could sense via Mantra whenever anyone dies or is severely wounded. Because of this, she hates it… …   Wikipedia

• Business and Industry Review — ▪ 1999 Introduction Overview        Annual Average Rates of Growth of Manufacturing Output, 1980 97, Table Pattern of Output, 1994 97, Table Index Numbers of Production, Employment, and Productivity in Manufacturing Industries, Table (For Annual… …   Universalium

• analysis — /euh nal euh sis/, n., pl. analyses / seez /. 1. the separating of any material or abstract entity into its constituent elements (opposed to synthesis). 2. this process as a method of studying the nature of something or of determining its… …   Universalium