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A line on a map or chart passing through places having the same cotidal hour



Related Terms

STANDARD PARALLEL

  1. A parallel of latitude which is used as a control line in the computation of a map projection. 2. A parallel of latitude on a map or chart along which the scale is as stated for that map or chart.

GREAT CIRCLE CHART

A chart on which a great circle appears as a straight line or approximately so, particularly a chart on the gnomonic map projection.

ISOGRIV

A line drawn on a map or chart joining points of equal grivation

CONCURRENT LINE

A line on a map or chart passing through places having the same current hour

AREAL FEATURE

A topographic feature, such as sand, swamp, vegetation, etc., which extends over an area. It is represented on the published map or chart by a solid or screened color, by a prepared pattern of symbols, or by a delimiting line

OBLIQUE CHART

A chart on an oblique map projection.

RADAR REFERENCE LINE

A mid-channel line on a chart which corresponds to a line incorporated in harbor radar display for the purpose of providing a reference for informing a vessel of its position. In some cases the line may be coincident with the recommended track. The line may be broken into sections of specified length having assigned names or numbers.

OVERPRINT

New material printed on a map or chart to show data of importance or special value in addition to that originally printed.

MULTIPLE CONNECTOR

A flow chart symbol that indicates the merging of several flow lines into one line or the dispersal of a flow line into several lines.

AZIMUTHAL EQUIDISTANT CHART

A chart on the azimuthal equidistant map projection. azimuthal equidistant map projecti

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