Furuno FSV-84 manual Event Mark, Own Ship Position Mark

4. SLANT MODE

4.18Event Mark, Own Ship Position Mark

The event mark is useful for finding the horizontal range, depth and bearing to a location some distance from current position. 10 such marks may be inscribed on the horizontal display. This function requires speed and heading data.

There are two types of event marks, latest event mark (⊕) and event mark (+). Each time an event mark is entered the latest event mark appears at the trackball mark position and all other event marks are shown by the “plus” (+) mark and numbered in sequential order. When the memory capacity for event marks is reached the earliest event mark is automatically erased to make room for the latest.

The own ship position mark () is used to mark current position.

4.18.1Entering an event mark

1.Set the trackball mark where you want to place an event mark.

2.Press the [EVENT] key. The horizontal range, depth and bearing to the event mark appear at the bottom left corner of the horizontal display area.

→234: Horizontal range (m) from own ship mark

↓19: Present depth (m) to mark

(35): Depth (m) of mark at moment EVENT key is pressed.

B265: Present bearing (degree)

Bottom left-hand corner of the screen

Event mark data

With speed and heading data the mark follows own ship’s movements. In the True Motion mode, the event mark is stationary. When the tilt angle is changed mark position changes with slant range. Note however that the mark’s position does not change when automatic tilt is active; the tilt center angle is used to position the mark.

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