Furuno FSV-84, Руководство оператора

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4. SLANT MODE
4-24
4.12.3 Position tracking mode
This mode tracks a stationary position (such as a reef) using position data fed
from a navigator.
Depth
A B C D
E
How position tracking mode target lock works
1. Select TARGET MARK at step 7 in the procedure in section 4.12.1.
2. Use the trackball to select the location to track.
3. Press the [TARGET LOCK] key to inscribe the target lock mark (
)
at the
location selected. The target lock mark is also inscribed on the vertical
display.
Tilt, range and vertical bearing are automatically adjusted to track the location.
Using the figure above as an example, the target lock mark is placed on location
“E”. Then, the equipment remembers the location of “E” and automatically
changes the tilt angle as the ship moves from position A through D. As long as
the fish school “E” is stationary its echo is kept displayed on the screen.