Furuno CSH-53 - Manual (Page 66)

7-12
Note 3: Each time the FISH key is pressed the latest fish mark
and ship’s speed mark change in the sequence shown below:
Fish key pressed once:
Fish key pressed twice:
Fish key pressed three times:
Fish key pressed four times:
↓
↓
X
→
↓
X
↓
↓
X
→
↓
→
The Event Mark
The event mark is useful for finding the horizontal range, depth
and bearing to a location some distance from current position.
This function requires speed and heading inputs.
There are two types of event marks: event mark 1 and event
mark 2. 10 of each type of mark can be displayed. The unit marks
the latest one by ( ) for event mark 1 and by ( ) for event mark
2. Older event marks are displayed by a cross plus event number
(event mark 1) or an inverted Y with event number (event mark
2). When you enter more than ten event marks, the unit erases
the oldest mark, one by one.
1 2 3
1 2 3
Latest
Figure 7-10 Event marks