Angular distance between the horizontal and the direction of a line of force of the earth’s magnetic field at any point. Also called DIP, MAGNETIC INCLINATION. 
Angular distance between the horizontal and the direction of a line of force of the earth’s magnetic field at any point. Also called DIP, MAGNETIC INCLINATION. 
Related Terms 

MAGNETIC DIRECTIONHorizontal direction expressed as angular distance from magnetic north. magnetic diurnal variation. Oscillations of the earth’s magnetic field which have a periodicity of about a day and which depend to a close approximation only on local time and geographic latitude. Also called MAGNETIC DAILY VARIATION. 
LINE OF FORCEA line indicating the direction in which a force acts, as in a magnetic field 
GRID DIRECTIONHorizontal direction expressed as angular distance from grid north. Grid direction i 
TRUE DIRECTIONHorizontal direction expressed as angular distance from true north. 
RELATIVE DIRECTIONHorizontal direction expressed as angular distance from heading. 
RHUMBLINE COURSEThe direction of the rhumb line from the point of departure to the destination, expressed as the angular distance from a reference direction, usually north. Also called MERCATOR COURSE. 
MAGNETIC LATITUDEAngular distance north or south of the magnetic equator. The angle is equal to an angle, the tangent of which is equal to half the tangent of the magnetic dip at the point. 
MERCATOR DIRECTIONHorizontal direction of a rhumb line, expressed as angular distance from a reference direction. Also called RHUMB DIRECTION. 
COMPASS DIRECTIONHorizontal direction expressed as angular distance from compass north 
GREAT CIRCLE DIRECTIONHorizontal direction of a great circle, expressed as angular distance from a reference direction. 
MarineProHelp 2018.