Shallow Depth Alarm, Draft, Acknowledging the alarm

Monochrome (amber) is the default setting. The Strata display contains multiple colors depending on the reflectivity from underwater objects of the sounding pulses. Red is strongest, followed by brown, orange, yellow, blue, and light blue.

1.11 Shallow Depth Alarm

The shallow depth alarm sounds when the seabed is shallower than the preset depth. The default in the NAV position is 20 m. You can adjust the alarm depth as below:

Activating/deactivating the alarm

1.Press the MUTE ALARM key to display the depth alarm setting window.

DEPTH ALARM

10m

-/ +: To set option

2.Press the [+] or [-] key to change setting depth. The setting is shown digitally at the top of the screen and graphically key the depth alarm line.

When the alarm is activated, the message “SHALLOW DEPTH ALARM” is displayed at the center on the screen.

Note: When the draft setting is –10.0 to –0.1 in the DBS mode, the shallow depth alarm setting will show a minus value. At this time, the alarm setting value indication shows “****” and the alarm function is disabled.

Acknowledging the alarm

You can silence the alarm by pressing the MUTE ALARM key. The message “SHALLOW DEPTH ALARM” moves to upper side of the screen.

1.12 Draft

It is necessary to set the draft to use the DBS display mode, which shows depth below surface.

1.Select DBS with the MODE control.

“Confirm and set ships draft to use DBS mode.” appears.

2.Press the DRAFT key to display the draft setting window.

0.0 m

-/+: To set option

3.Press the [+] key to increase the setting depth and [-] key to decrease it. The setting depth is -10 to 30 m in steps of 0.1 m.

The above window disappears in 10 seconds.

The draft setting is displayed at the upper right corner and the range scale is shifted according to the draft setting.