Raymarine L1250D, Owner'S Handbook Manual

Page: 143 / 246

Chapter 6: Sonar Operations 6-13
MOB
➤
To
GOTO
a cursor waypoint see
Going To an Individual Target Point on
page 7-33
.
➤
To
ERASE
a cursor waypoint see
Erasing a Waypoint on page 7-15
.
6.6 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 4.3 ).
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 letters
MOB
.
• Marks the current position on the chart display with a MOB symbol .
• Displays the MOB data box, which shows the bearing and distance from
your vessel to the MOB waypoint position and the elapsed time since the
MOB was initiated (
Figure 6-3 ).
• 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 6-3: MOB Display
MARKS
D6188-1
MOB
position
MOB
data box
ZOOM FREQUENCY BTM.LOCK A-SCOPE
MOB
100
RNG
0.33
nm
BRG
162°
T
00:05:24
MOB
POSITION
N 43°04^76
W070°44^83
80
60
81213_1.book Page 13 Monday, March 17, 2003 1:14 PM