Raymarine GPS Plotter, Owner'S Handbook Manual

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3-44 Raynav 300 GPS Plotter
3.8 Man Overboard (MOB)
If a person or object is lost overboard, use the Man Overboard (MOB)
function to return to the location immediately.
Note: To obtain an MOB position, you need either of the following:
• Position data from the GPS antenna.
• Heading and speed data, so that the position can be calculated by dead
reckoning.
Select the type of data used for the MOB position by means of the Set Up
Menus (see
Chapter 4 ).
➤
To initiate the MOB procedure, press and hold the
MARK
key for two
seconds.
The display unit performs the following tasks automatically and the
plotter screen is updated accordingly:
• Switches the range scale to 1/2 nm.
The MOB waypoint symbol replaces any current active waypoint
and route.
• Displays the MOB data box, showing the bearing and distance from
your vessel to the MOB waypoint position and the elapsed time since
the MOB was initiated.
• As the vessel moves away from the MOB position, a dotted line is dis-
played connecting the MOB position with the vessel’s current posi-
tion.
Figure 3-45: MOB Display (Plotter Screen)
• Sounds a 4-second alarm pattern every 30 seconds.
• Sends an MOB message to other units in the system, via the SeaTalk
connection.
D5544-1
RNG
0.33
nm
BRG
162°
T
00:05:24
MOB
(DR)
SCREEN FIND SHIP
MOB
CSR 50°50^05W SOG 23.4kn
POS 001°06^00W COG 234°M
1/
2
nm
81171_4.BOOK Page 44 Thursday, November 29, 2001 11:34 AM