BriarTek Orca DF-101, User Manual And Installation Manual

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6.0 General Guidance for Bridge Watchstanders
and Small Boat Personnel
a. When the DF receives the MOB signal, the bearing indicator LED on the display
will illuminate, indicating the relative bearing to the MOB. Circular display bearing
accuracy is ±5 degrees.
NOTE: Bearing indication may be sporadic, depending on weather conditions and
sea state. Poor weather, high sea state, and interference from 121.5 MHz emitters
(own ship or otherwise) will affect the ability of the DF to receive the signal.
c. When the bearing to the MOB has been determined, steer the vessel toward the
MOB by keeping the illuminated bearing indicator LED 10 to 20 degrees off the
bow.
d. As the small boat approaches the MOB, establish visual contact and effect
recovery of the MOB.
NOTE: Recovery team must turn off transmitter to send “All Clear” signal.
e. When the MOB is recovered, ensure recovery team turns off the transmitter. This
will cause the transmitter to send “All Clear” signal to the receiver, indicating the
MOB has been recovered.
7.0 Direction Finder Maintenance
7.1 Inspection
Inspect all components of the direction finder: display, antenna, and cables, for
unusual wear and tear. If any parts are broken, missing or excessively worn, notify
supervisor for ship’s force repair or replacement.
7.2 Testing
a. Ensure the direction finder is connected to power source and all breakers are on.
b. Turn on display at power On/Off button if system is not already on.
NOTE: Ensure direct line of sight and a minimum distance of 10 feet between
transmitter and antenna.
NOTE: Ensure bridge watchstanders are notified prior to activating transmitter.
c. Activate MOBI transmitter.
d. When signal is detected by direction finder, bearing indicator LED(s) will
illuminate on display. Ensure illuminated bearing indicator LED correlates with
actual bearing. Move transmitter to different bearing and ensure correlation again.
e. Deactivate MOBI transmitter.