JRC JLN-652 - 6.1 Absolute and Relative Current Data

6-3
6
Ｅ
：E layer current
Current direction
/Current speed
Ｂ
：
B layer current
Current direction
/Current speed
Ａ
：A layer current
Current direction
/ Current speed
6.1 Absolute Current and Relative
current
6.1.1 Absolute current
The absolute current shows the direction and the speed of the current to bottom of the sea (to ground).
Fig. 6.1.1 is an example when the absolute current of three layers (A, B, and E) is displayed in the circle
graph based on bottom of the sea among the currents in A, B, C, D, and E layer.
Fig. 6.1.1 Absolute
Current
The current speed is displayed by
the vector length in the current circle
graph, and the current direction is
displayed in the vector direction. (*1)
*1 The direction of the current can be selected from 1) "Tide is Flowing" and 2) "Tide is Coming". Refer to 7.1.4 “Display Setting”.
Ship Bearing
（
True Bearing
）
Ship course against the sea
bottom (Deflection Angle)
Current in A layer against the
sea bottom
Current in B layer against the
sea bottom
Current in E layer against
the sea bottom
Ａ
Layer
Sea Bottom
Sea Surface
B Layer
E Layer