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2. RADAR, CHART RADAR OPERATION
2-53
2.34 Drop Mark
The drop mark is used to find the angle and distance from a point to your ship. This
can be useful for marking a point to avoid while navigating to a destination. The drop
marks can be shown or hidden on the screen.
The Drop mark box shows the angle and distance between the drop mark and your
ship.
Note: The drop mark feature is inoperative when position data is lost.
2.34.1 How to show, hide the drop mark box
The drop mark box can be shown or hidden by trackball.
OFF: Click the arrow on the [Drop mark] box or right-click the box and select
[DROPx Off] (x=Drop mark no.).
ON: Click the minimize box.
2.34.2 How to inscribe a drop mark
Click the desired Drop mark box at the bottom of the screen. Click a position on the
display area where to put a drop mark, and a drop mark is inscribed at the position
selected. The angle and distance to the point appear in the corresponding Drop mark
box.
2.34.3 Drop mark bearing reference
The bearing of a drop mark is automatically referenced to True or Relative according
to the orientation mode.
Orientation mode Bearing reference
Head-up RM Relative
STAB Head-up RM
Stern-up RM
Course-up RM True
North-up RM
North-up TM
Drop mark
Drop mark no.
(1 or 2)
Drop angle
Drop distance
Minimize button