Operation
Page 17
Figure 14 Safety Related Message notification
3.11.2 Sending AIS Text and Safety Related Messages
To compose a new text or Safety Related Message (SRM) press the ‘
Menu
’ key then select the ‘
MESSAGES
’
sub menu followed by the ‘
NEW MESSAGE
’ option. The new message screen is shown in Figure 15. To send
a message complete the following steps:
1. Using the scroll wheel highlight the ‘
TYPE
’ field and select the type of message you wish to send. The
available options are
‘Broadcast’, ‘Addressed’, ‘Broadcast SRM’ and ‘Addressed SRM’.
Click the scroll
wheel to confirm the message type.
2. For addressed message types only select the ‘
TO
’ field and press the scroll wheel. Enter the MMSI of
the vessel the message should be sent to using the scroll wheel. See section 3.13 for instructions on
using the scroll wheel to enter data.
3. Select the ‘
MESSAGE
’ field and enter your message. Note that the length of a message is limited as
follows:
○
Addressed SRM 156 characters
○
Broadcast SRM 161 characters
○
Addressed text 151 characters
○
Broadcast text 156 characters
4. Press the ‘
Send
’ function key to transmit the message.
When an addressed message is sent the addressee will return an acknowledgement on receipt of the
message. If this acknowledgement is not received a warning will be displayed.
Figure 15 Message composition
13:20:47
SAFET Y REL ATED MESSAGE:
Type: Broadcast
SRM
MMSI: 235687901
NAME:
>>MARY ROSE
Channel: A
Date: 29/01/2010
OK
GPS
INT
Back
Reply
13:20:47
NE W MESSAGE:
Type:
Broadcast
SRM
MMSI:
Not
required
Channel:
Auto
M essage:
OK
GPS
INT
Back/S end
Edit
!
Warning:
Class B transceivers are permitted to receive broadcast Safety Related Messages
and broadcast text messages, however this function is not mandatory. Class B transceivers are
not able to receive addressed Safety Related or text messages. There is therefore no guarantee
that text messages or SRMs sent to a Class B transceiver will be received.
