Introduction; Man Overboard Operation - mcmurdo Guardian MOB Beacon Watch User Manual

1. Introduction

The Guardian MOB Beacon Watch is a full function alarm chronograph which
incorporates an emergency distress transmitter. The transmitter may be activated
automatically if the Watch is immersed in water; it may also be activated manually.
This product is designed to be worn in conditions where the user is at risk of falling
into water and where it may be difficult to locate the person in the water visually. The
beacon is used in conjunction with a receiver to generate an alarm; a direction
finder is available to help locate the person in the water.

1.1 Man Overboard Operation

Once armed, the beacon will activate automatically when immersed in sea water,
and will continue to transmit until disabled. Arming and disabling are detailed in the
Features section. In fresh water the beacon must be activated manually.
The beacon cannot transmit effectively when underwater, and needs to be as high
as possible for best signal range. Ideally, the user should hold up the arm wearing
the watch, but this is impractical for long periods. It is recommended that the arm is
rested on top of the lifejacket, as shown opposite.
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