Dsc; Distress Call And Position Request - Si-tex SNS-1100 User Manual

(received from the GPS).
• Real Time View Off: the Weather data is not displayed.
The layer displayed is the one selected into the previous menu item.
Type of Data
[MENU] + "C-Weather" + [ENTER] + "Type od Data" + [ENTER]
Allows selecting the type of data, see the previous Fig. 3.8.
SNS 700e/SNS 700i/SNS 700fe/SNS 700fi/SNS 1100

3.9 DSC

WARNING
The chart plotter must be interfaced with a DSC VHF radio.
The DSC (Digital Selective Calling) is a method of establishing a VHF radio call; it is used to
announce urgent maritime safety information broadcasts.
This system allows mariners to instantly send Distress Call or/and Position Request to the other
vessels equipped with a DSC transceiver within range of the transmission.
The Distress Call, that allows to receive a position of the vessel in distress, and the Position
Request, a great feature for anyone wanting to know the location of another vessel - for example
you buddy that is catching fish, or finding the location of a person you are cruising with, are
performed by an external device, the DSC VHF radio. The chart plotter interfaced with a DSC
VHF radio prompts the user to see the GPS position of the vessel in distress and also allows for
easy navigation to the vessel.
The Distress Call and the Position Request icons that are displaying on the screen, are shown
in the following table:
NOTE
The label can be the MMSI or the corresponding vessel's name. If in the DSC Directory the
MMSI has been associated to its relative vessel name, the vessel's name is shown in the label
instead of the MMSI.
Fig. 3.9 - Distress Call and Position Request icons
3.9.1

Distress Call and Position Request

During a distress situation, a vessel that is equipped with a DSC VHF radio and connected to a
GPS, has the capability to transmit a DSC Distress Call with GPS Position.
When the VHF radio receives a DSC Distress Call, the position information of the vessel in
distress is transferred to the chart plotter. The chart plotter logs the Distress Call into the DSC
Log and also marks the position of the vessel in distress on the Chart page. A pop-up screen
advises the user that a Distress Call has been received. Within the pop-up screen it asks the
user if he would like to view the call on the Chart page or exit the pop-up screen. By selecting
the item "View on Chart" and press [ENTER] two options are shown:
60 - User Manual