User Guide

688(I):
• Radio Mast: Click RAISE above the toggle switch to raise the Radio Antenna mast.
•
Floating Wire: Click STREAM to deploy the Floating Wire Antenna.
Akula:
• Radio Mast: In the Radio Antenna panel click RAISE to extend the Radio Mast.The green light
flashes until the mast is fully extended then glows steadily.
•
Floating Wire: In the Floating Wire panel click STREAM .A progress bar below the switch indicates
the length of the wire that is currently deployed.
2. Look at the message screen for incoming messages.A scroll bar appears in the message
window if there are more messages than can be displayed at one time.The newest message
traffic is always at the bottom of the scrolling text. Message traffic may not appear immediately.
When a message is received, the Receive or Incoming Message button glows briefly.
3. After a message has been received, lower the Radio Mast.
NOTE: Radio message text also appears in the Radio History Window on the Task Bar.When a new
message is received, the radio history selection button (the blue square) on the Task Bar
flashes until the button is selected.You can raise and lower the radio mast from the Task
Bar’s Orders menu from any screen.
ELECTRONIC SUPPORT MEASURES (ESM)
The ESM mast is designed for the passive detection of radar emissions.This sensor detects any
platform in your area that is employing radar.When the Mast is raised, a contact appears on the
circular ESM Display as a bright wedge extending from the center of the display to the bearing
indicator at the display’s outer edge.The intensity of the signal is usually an indication of the
contact’s proximity to your ship.The ESM Indicator lights indicate the strength of the signal and
move from green to red as the signal strength grows.
In addition to the contact’s bearing, ESM can also tell you the type of ship that is radiating.Your
ship’s computer analyses the transmission and compares it to those in its database.
Because you must be at periscope depth and the ESM mast is exposed, you make your ship
vulnerable to detection when using ESM. Be sure to minimize the amount of time your ESM mast is
exposed.
DETECTING AND CLASSIFYING CONTACTS WITH ESM
To use ESM:
1. Raise the ESM mast to activate the ESM system. Remember that you must be at periscope depth
and at a speed of 10 kts or less if the sail is submerged.
Seawolf
• Under ESM Antenna click the + (Raise) side of the button.The text flashes green until the mast is
fully extended then remains green until the mast is lowered.
688(I):
• Under ESM Antenna click RAISE above the toggle switch to raise the ESM Antenna mast.The red
light is lit when the mast is raised.
Akula:
• On the ESM Antenna panel click RAISE to extend the Radio Mast.The switch moves to that
position.A green light flashes until the mast is fully extended then glows steadily.
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