Section 3 Common Basic Operations  3-20 
3.12  MOB (Man Over Board) 
When a person falls overboard, this monitoring function prevents loss of sight of the position of the 
person overboard. 
The MOB use procedure is as follows. 
1  Click on the MOB button on the right toolbar. 
 
The [Marker] dialogue box appears and the MOB marker is displayed on the own ship’s position 
when the button is clicked on. 
 
Memo 
The [Marker] dialogue box appears by clicking [Tool] - [MOB] on the menu
 
2  Monitor with the screen and the [Marker] dialogue box. 
The position relationship between the own ship that is moving and the MOB marker is displayed 
as follows. 
 
 
The following items are displayed in the Marker dialogue. 
Displays the coordinate of the MOB marker. 
Displays the bearing from the own ship to the MOB marker. 
Range  Displays the range from the own ship to the MOB marker. The unit of range 
is switched whenever the M/km/sm unit switching button is clicked on. 
NM denotes nautical mile, sm denotes statut
e mile, and km denotes 
kilometre 
Displays the time to reach the MOB marker from the ship speed. 
Displays the time elapsed after clicking on the [MOB] button. 
 
To exit from MOB 
1  Click on the [X] button in the [Marker] dialogue box.
A confirmation dialogue box appears. 
2  Click on the [OK] button. 
The [Marker] dialogue is closed. 
The MOB marker is cleared 
Position and bearing from own ship