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Eng ID | Term | Definition |
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4901 | sounding selection | 1. Water depths numerically displayed on a CHART. 2. The process of choosing individual water depths from a hydrographic survey in the com... more |
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4902 | sounding tube | A glass tube of small diameter, used with certain types of SOUNDING MACHINES in determining DEPTH. |
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4903 | sounding wire | A wire used with a SOUNDING MACHINE in determining DEPTH. |
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4904 | sound intensity | See INTENSITY. |
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4905 | sound pressure | See PRESSURE. |
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4906 | sound ray | A line perpendicular at each of its points to the fronts of a sound WAVE. |
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4907 | sound signal | Any SOUND produced to convey intelligence, as a FOG SIGNAL. |
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4908 | sound signal: submarine | A SOUND SIGNAL transmitted through water. |
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4909 | sound velocity | The rate of motion at which sound energy moves through a medium. The velocity of sound in SEA WATER is a function of temperature, SALINITY, ... more |
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4910 | sound wave | See WAVE. |
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4911 | source | The point where a RIVER rises. |
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4912 | source diagram | A small scale map or index placed on a chart to indicate the coverage area, and textual description, of the source data, used in constructio... more |
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4913 | south celestial pole | See POLE: CELESTIAL. |
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4914 | south geographical pole | See POLE: GEOGRAPHICAL. |
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4915 | southing | The distance a craft makes good to the south. The opposite is NORTHING. |
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4916 | south magnetic pole | See MAGNETIC POLE. |
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4917 | space coordinates | See COORDINATES. |
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4918 | space modulation | See MODULATION. |
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4919 | spar buoy | A BUOY made of a tapered log or metal shaped like a tapered log, and secured so as to float in an approximately vertical position. |
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4920 | sparker | An ECHO SOUNDER which uses an electrical spark discharge as the sound source. A RECORDER produces a CHART which represents a vertical cross... more |