JRC JLN-652 - Relative Current and Standard Current Layer

6-4
ＡＥ
：Relative current
Current direction/Current speed
of AE layer
ＢＥ
：Relative current
Current direction
/Current speed
of BE layer
6.1.2 Relative Current and Standard Current Layer
Relative Current: For instance, when E layer is a standard, a relative current shows the direction and
speed of the current in A layer to the current in E layer, B layer, C layer, and D layer. Moreover, each
relative current is displayed as the AE layer, the BE layer, the CE layer, and the DE layer.
Figure 6.1.2 is an example of displaying the current in A and B layer because of a relative current based
on E layer as shown in figure (Circle
graph).
Fig. 6.1.2 Relative 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
）
Relative Current （
Ａ
Ｅ
）
A Layer Current against Sea Bottom
B Layer Current against Sea Bottom
E Layer Current
against Sea
Bottom
Ａ
Layer
B Layer
E Layer
Sea Surface
Ｅ
Ａ
Ｂ
Relative Current （
B Ｅ
）
Standard Layer of
Relative Current
（In case of E Layer Standard）