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sMRT V100 User Manual
v2.0
MRT Ltd. © 2014
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sMRT V100 Overview
The sMRT V100 is a multi-system Personal Locating Device designed to
RTCM Standard 11901.1 specifications for use during an emergency at sea.
The integration of VHF DSC and AIS technologies equips mariners in
distress with life-saving technology to vastly improve the likelihood of rapid
location and recovery by a vessel or Search and Rescue (SAR) authorities.
How the sMRT V100 Works
The sMRT V100 uses the marine VHF radio band to transmit distress
alerts and updated GPS positions regularly from the survivor in the water
to VHF DSC radios, as well as AIS equipped vessels within range. A 30
second delay period prior to activation is designed to avoid the device
being activated accidentally.
The sMRT V100 transmits AIS and emergency VHF DSC transmissions
after activation. AIS transmissions take precedence over VHF DSC
transmissions and will be transmitted first. The sMRT V100 uses an
internal GPS receiver to acquire a position within approximately one
minute of activation. The device then sends VHF DSC and AIS
transmissions containing the survivor's current position.
Some marine radios are able to output a waypoint of the GPS position
embedded within distress alerts to chart plotters. AIS alerts are
routinely displayed on Electronic Chart Display and Information
Systems (ECDIS). Compatible chart plotters or ECDIS can use these
waypoints to provide the direction and rate of drift of the survivor, as well
as range and bearing information.
Emergency alerts operate on a timing schedule and are repeated at
regular intervals to update rescue teams and assist in tracking the
survivor in the water. The
STROBE
light on the device flashes once per
second after activation and assists with visual homing at night or in poor
weather conditions.
