Raytheon HSB L755, Owner'S Handbook Manual

Page: 127 / 224

Chapter 4: Fishfinder Operations 4-13
MO
B
4.7 MOB
If you lose a person or object overboard, and need to return to the location, you
should use the Man Overboard (MOB) function.
You can select the type of data used for the MOB position using the set up
menus (see Section 7.3).
Note: To obtain MOB position, you need either of the following:
• Position data from a GPS or equivalent device
• Heading and speed data, so that the position can be calculated by dead
reckoning
➤
To initiate the MOB procedure, press and hold the
MARKS
key for two
seconds. The system then performs the following tasks automatically:
• Marks the Fishfinder image with a vertical line and the letter
MOB
.
• Marks the current position on the chart display with a MOB symbol .
• 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 (Figure 4-4).
• Sounds a 4-second alarm pattern every 30 seconds.
• Sends an MOB message (including bearing and distance) to other units in
the system, via the SeaTalk connection.
Figure 4-4: MOB Display
➤
To cancel the MOB, press and hold the
MARKS
key for 2 seconds.
The MOB symbol and data box are removed.
Note: The MOB procedure can also be initiated or cancelled if the appropri-
ate SeaTalk message is received by the display unit.
MARKS
D5034-2
MOB
position
MOB
data box
ZOOM FREQUENCY BTM.LOCK A-SCOPE
52 MOB
100
RNG
0.33
nm
BRG
162°
T
00:05:24
MOB
POSITION
N 43°04^76
W070°44^83
MARKS