Sheltered waters Class E area - for the purposes of the NSCV Part B, operations within specified geographical limits designated by the (State) Authority as smooth waters, typically waters where the significant wave height does not exceed 0.5 m from trough to crest for at least 90 per cent of the time.
Related Terms |
MODULATING WAVE
A wave which modulates a carrier wave.
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ANGSTROM UNITS
A unit of wave length, equal in length to one ten billionth.
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INTERFACIAL TENSION (IFT)
The energy per unit area present at the boundary of two immiscible liquids. It is usually expressed in dynes/cm (ASTM Designation D 971.)
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HOP
Travel of a radio wave to the ionosphere and back to earth. The number of hops a radio signal has experienced is usually designated by the expression one-hop, two-hop, multihop, etc
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HIGH
An area of high pressure. Since a high is, on a synoptic chart, always associated with anticyclonic circulation, the term is used interchangeably with ANTICYCLONE
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HORIZONTALLY POLARIZED WAVE
A plane polarized electromagnetic wave in which the electric field vector is in a horizontal plane.
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HORN ANTENNA
An antenna consisting of a waveguide the cross-sectional area of which increases toward the open end. Often shortened to HORN.
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PERMEABILITY
The relationship of flow per unit area to differential pressure across a filter medium.
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HOLD-UP
The cross-sectional area locally occupied by one of the phases of a multiphase flow, relative to the cross-sectional area of the conduit at the same local position.
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MULTIPHASE FRACTION METER
A device for measuring the phase area fractions of oil, gas and water of a multiphase flow through a cross-section of a conduit.
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