depth-determining sonar

См. также в других словарях:

• Sonar — This article is about underwater sound propagation. For atmospheric sounding, see SODAR. For other uses, see Sonar (disambiguation) …   Wikipedia

• sonar — /soh nahr/, n. 1. a method for detecting and locating objects submerged in water by echolocation. 2. the apparatus used in sonar. Also called, Brit., asdic. [1940 45; so(und) na(vigation) r(anging)] * * * Technique for detecting and determining… …   Universalium

• sonic depth finder — noun depth finder for determining depth of water or a submerged object by means of ultrasound waves • Syn: ↑fathometer • Hypernyms: ↑depth finder * * * noun : an instrument for determining the depth of a body of water or of an object below the… …   Useful english dictionary

• Hedgehog (weapon) — For the area denial weapon, see Czech hedgehog. The Hedgehog was an anti submarine weapon developed by the Royal Navy during World War II, that was deployed on convoy escort warships such as destroyers to supplement the depth charge. The weapon… …   Wikipedia

• Geophysical MASINT — is a branch of Measurement and Signature Intelligence (MASINT) that involves phenomena transmitted through the earth (ground, water, atmosphere) and manmade structures including emitted or reflected sounds, pressure waves, vibrations, and… …   Wikipedia

• Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry       The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …   Universalium

• Ehime Maru and USS Greeneville collision — infobox generic | color = #cc9999 name = Ehime Maru and USS Greeneville collision sub0 = img1 = EhimeMaru.jpg width1 = 325px cap1 = The Japanese high school fishing training ship Ehime Maru lbl1 = Date: row1 = February 9, 2001 lbl2 = Place: row2 …   Wikipedia

• Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …   Universalium

• Alfa class submarine — The Soviet Union/Russian Navy Project 705 ( Лира / Lyra ) was a submarine class of hunter/killer nuclear powered vessels (abbreviated PLA: Podvodnaya lodka atomnaya , nuclear hunter/killer submarine). The class is also known by the NATO reporting …   Wikipedia

• Atlantic Ocean — an ocean bounded by North America and South America in the Western Hemisphere and by Europe and Africa in the Eastern Hemisphere. ab. 31,530,000 sq. mi. (81,663,000 sq. km); with connecting seas ab. 41,000,000 sq. mi. (106,100,000 sq. km);… …   Universalium

• undersea exploration — Introduction       the investigation and description of the ocean waters and the seafloor and of the Earth beneath. Primary objectives and accomplishments       Included in the scope of undersea exploration are the physical and chemical… …   Universalium