User's Manual

8.1.3 Cancelling a distress alert

If a DSC distress alert is sent accidentally, cancel it immediately

on the RS87 by pressing the C button to prevent repeats, then

make the following announcement on channel 16 -

“This is (name of vessel, callsign, MMSI)”

“Cancel DSC Alert sent (date & time UTC)”

Do not simply cancel the DSC alert without verbally cancelling

it as well, otherwise the rescue authorities will not be aware

that this is a false alarm.

8.1.4 Alerting all vessels within range

If the vessel is outside of coast radio range and needs to issue a

safety warning to all vessels within radio range, transmit an All

Ships Safety call by DSC. After about 15 seconds transmit on

channel 16 the safety call and message as follows -

“Securité, Securité, Securité”

“All stations (or called station)” repeated three times

“This is (MMSI and name or callsign of own vessel)”

Repeat text of safety message.

8.1.5 Calling a coast radio station

Enter the MMSI of the station into the RS87, either manually

or from the directory. When the call is acknowledged, the

working channel for voice communication will be indicated

and the RS87 will automatically switch to that channel. Make a

voice call as normal.

8.1.6 Making an intership call

Enter the vessel’s MMSI into the RS87, either manually or from

the directory. Before sending the call, enter the inter-ship chan-

nel to be used for subsequent communication. When the alarm

sounds on the called vessel, its operator should acknowledge

by DSC, then respond by voice on the selected channel.

If the MMSI number of the vessel is not known, call as now on

channel 16. If no response is received, call on channel 13. This

is the GMDSS bridge to bridge communication channel.

8.2 NMEA sentences received

The following NMEA0183 sentences are processed by the RS87

in order to transmit the boat’s position if a Distress Alert is ini-

tiated -

NMEA0183 version 2 and 3 - GGA, GLL, RMC, ZDA

RS87 VHF

Part No. E04297