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Eng ID Term Definition
3981
port
A place provided with terminal and transfer facilities for loading and discharging cargo or pas­sengers, usually located in a HARBOUR. The ... more
A place provided with terminal and transfer facilities for loading and discharging cargo or pas­sengers, usually located in a HARBOUR. The left side of a craft, facing forward. The opposite is STARBOARD.
3982
port authority
The entity responsible for administra­tion and maintenance of harbour facilities.
3983
port handbook
A handbook for a specific port.
3984
position
DATA which define the location of a point with respect to a reference system. The COORDINATES which define such a location. The place occupi... more
DATA which define the location of a point with respect to a reference system. The COORDINATES which define such a location. The place occupied by a point on the surface of the EARTH, or in space.
3985
position: adjusted
An adjusted value of the coordinate position of a point on the EARTH.
3986
position: apparent
In ASTRONOMY, the POSITION of a CELESTIAL BODY reduced to the centre of the EARTH. It differs from the position in which the object is obser... more
In ASTRONOMY, the POSITION of a CELESTIAL BODY reduced to the centre of the EARTH. It differs from the position in which the object is obser­ved as to the effects of REFRAC­TION, DIURNAL ABERRATI­ON, and DIURNAL PARALLAX.
3987
position: assumed
A point at which a craft is assumed to be located, particularly one used as preliminary to establishing certain naviga­tional DATA, as that... more
A point at which a craft is assumed to be located, particularly one used as preliminary to establishing certain naviga­tional DATA, as that point of the surface of the EARTH for which the computed ALTITUDE is determined in the solution of a celestial OBSERVATION.
3988
position: astronomical
A point on the EARTH whose COORDINATES have been determined as a result of OBSER­VATION of CELESTIAL BODIES. The expression is usually used... more
A point on the EARTH whose COORDINATES have been determined as a result of OBSER­VATION of CELESTIAL BODIES. The expression is usually used in connection with POSITIONS on LAND determined with great ACCURACY for SURVEY purposes. A point on the EARTH, defined in terms of ASTRONOM­ICAL LATITUDE and LONGITUDE.
3989
position: dead reckoning
The POSITION of a craft deter­mined by DEAD RECKONING, or by advancing a previous POSITION for COURSES and distances.
3990
position: detached
In HYDROGRAPHIC SURVEY, an expres­sion indicating a POSITION taken, to locate ROCKS, floating AIDS TO NAVIGATION, least DEPTHS on SHOALS or... more
In HYDROGRAPHIC SURVEY, an expres­sion indicating a POSITION taken, to locate ROCKS, floating AIDS TO NAVIGATION, least DEPTHS on SHOALS or other dangers or features of importance.
3991
position: estimated
The most probable POSITION of a craft determined from incomplete DATA or DATA of questionable ACCURACY. Such a POSITION might be deter­mine... more
The most probable POSITION of a craft determined from incomplete DATA or DATA of questionable ACCURACY. Such a POSITION might be deter­mined by applying a correction to the DEAD RECKONING POSITION.
3992
position: field
A POSITION computed while field work is in progress to determine the acceptability of the OBSERVA­TIONS or to provide a preliminary POSITIO... more
A POSITION computed while field work is in progress to determine the acceptability of the OBSERVA­TIONS or to provide a preliminary POSITION for other purposes.
3993
position: geodetic
A point on the EARTH, the COORDINA­TES of which have been determined by TRIANGULATION from an initial STATION whose location has been esta... more
A point on the EARTH, the COORDINA­TES of which have been determined by TRIANGULATION from an initial STATION whose location has been esta­blished as a result of ASTRONOMICAL OBSERVATIONS. The COOR­DINATES of such a POSITION depend upon the REFE­RENCE SPHEROID used.
3994
position: geographic(al)
The POSITION of a point on the surface of the EARTH ex­pressed in terms of LATI­TUDE and LONGITUDE, either ASTRONOMICAL or GEODETIC. A SUB... more
The POSITION of a point on the surface of the EARTH ex­pressed in terms of LATI­TUDE and LONGITUDE, either ASTRONOMICAL or GEODETIC. A SUB-POINT.
3995
position: relative
A point defined with reference to another POSITION, either fixed or moving.
3996
position angle
See PARAL­LACTIC ANGLE.
3997
position angles
The two sextant angles observed on a SURVEY SHIP for determining its POSITION.
3998
position approximate
Of inexact POSITION. The expres­sion is used principal­ly on CHARTS to indicate that the POSITION of a WRECK, SHOAL, etc., has not been ac... more
Of inexact POSITION. The expres­sion is used principal­ly on CHARTS to indicate that the POSITION of a WRECK, SHOAL, etc., has not been accura­tely determined or does not remain fixed. Usual­ly shown by the abbreviation 'PA'.
3999
position circle
See CIRCLE OF POSITION.
4000
position dilution of precision (PDOP)
See DILUTION OF PRECISION.