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Eng ID | Term | Definition |
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4621 | seaward | (adj. and adv.). Away from the LAND; toward the SEA. |
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4622 | sea water | The water of the SEAS, distinguished from fresh water by its appreciable SALINITY. The degree of the SALINITY greatly affects the water's p... more |
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4623 | sea water: colour of | The apparent colour of the surface layers of the SEA caused by the REFLECTION of certain components of the visible light spectrum coupled ... more |
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4624 | seaway | A moderately rough SEA. Used chiefly in the expression 'in a seaway'. HEADWAY of a vessel. The SEA as a route of travel from one place to an... more |
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4625 | seaweed | Any macroscopic marine ALGA or SEAGRASS. |
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4626 | Secchi disc | A white, black, or varicoloured disc, 30 centimetres in diameter, used to measure water transparency (clarity). The disc is lowered in the ... more |
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4627 | second | The unit of TIME in the SI system. A sixtieth part of a MINUTE, an angle or an arc. |
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4628 | secondary port | See STATION: SUBORDINATE. |
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4629 | secondary radar | See RADAR: PRIMARY. |
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4630 | secondary station | See STATION: SUPPLEMENTARY. |
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4631 | secondary tide(s) | See TIDE. |
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4632 | secondary tide station | See STATION: TIDE. |
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4633 | second nodal point | See NODAL POINT. |
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4634 | second order triangulation | See TRIANGULATION CLASSIFICATION. |
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4635 | section | Process of locating and coordinating a point from at least two existing control stations by observing horizontal directions from the control... more |
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4636 | sector scan sonar | A horizontal aperture SONAR used to detect obstructions ahead of the vessel by mechanical or electronic scanning in the horizontal plane. |
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4637 | secular change | An increase or decrease of intensity and/or change of direction of the total MAGNETIC FIELD over a period of many years. |
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4638 | sediment | Particulate organic and inorganic matter which accumulates in a loose unconsolidated form. It may be chemically precipitated from solution, ... more |
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4639 | sediment(s): bottom | In general all sedimentary material regardless of origin found on or in the submarine BOTTOM, including ballast or other material dumped in... more |
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4640 | sediment survey | A survey to determine the nature and distribution of types of sea bottom SEDIMENTS. |