Seiwa Starfish 2nd Edition - Manual (Page 55)

57 User Manual
♦
Real Time View On: the data is shown (the area of the download) at
the current date and time (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. 3.9.
BARRACUDA/BARRACUDA
I
GPS/STARFISH
E
/STARFISH/OYSTER/EX-
PLORER 3 /MARLIN:
3.10 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 loca-
tion 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:
Position Request icon
Distress Call icon
P
D
Fig. 3.10 - Distress Call and Position Request icons
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.
3.10.1 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: