Raymarine HSB Chartplotter User Manual - 4.4 Man Overboard (Mob)

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HSB Series Chartplotter

4.4 Man Overboard (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 Chapter 5).

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:

• Redraws the chart at 1/2 nm (even if cartography is not availabe).

• Marks the current position with a MOB symbol which 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 your vessel moves from the MOB position, a dotted line is

displayed connecting the MOB symbol and the vessel’s current

position.

D4273-1

RNG 

0.33

nm

BRG 

162°

T

00:05:24

MOB

MOB data box

MOB position

• 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.

➤

To cancel the MOB, press and hold the MARKS key for 2 seconds.

The chart is re-drawn at its previous scale, and the MOB symbol and

data box are removed.

Note: The MOB procedure can also be initiated or cancelled if the

appropriate SeaTalk message is received by the display unit.

Man OverBoard

(MOB)