User Guide

SONAR: DEMON
DEMON is an acronym for Demodulated Noise (DEMON).The DEMON Station is used to determine
the contact’s speed. Here you can also determine the number of blades on the contact’s propeller,
which can help you classify the contact.
SONAR: ACTIVE
In Active Sonar, a ping or a series of pings is transmitted.The resulting echoes from an object are
used to determine that object’s bearing and range.
SONAR: ACTIVE INTERCEPT
The Active Intercept Display provides information on an entity that is transmitting active sonar
pings. It gives information on the transmitting entity’s bearing, the interval between pings, the age
of the last signal, and the signal strength. Knowing the signal strength might also assist you in
determining the relative proximity of the active sonar source.
SONAR: SSP
The Sound Speed Profile (SSP) displays the speed at which sound is transmitted at various depths
in the ocean at your current location.Water tends to form distinct layers of density.These layers
affect sonar transmissions. Knowing the location of the layer in your area is important since the
layer can affect your ability to detect enemy ships and subs and also helps you hide from them.
TMA
The Target Motion Analysis (TMA) function works in conjunction with the ship’s four major sensors.
Using inputs from sonar, radar, ESM and periscope,TMA helps you determine a contact’s bearing,
range, speed and course.This information is necessary for developing a target solution.
FIRE CONTROL: TARGET DISPLAY
The functions available on the Fire Control Stations vary from class to class.These differences are
covered in the Ship Stations section of this manual. In general the Target Display panel is used to
designate the contact you want to target and select the tube and weapon with which you want to
attack the target.The weapon’s track can also be viewed on a map and certain weapons can be
wire-guided, enabled or shut down from this station.
FIRE CONTROL: LAUNCH PANEL
From the Launch Panel the selected tube is flooded, pressure is equalized and the muzzle door is
opened in preparation for the launch of the weapon. Depending on the class of submarine you are
commanding, you may also enter weapon presets or launch countermeasures from this station.
FIRE CONTROL: COUNTERMEASURE LAUNCHER
(SEAWOLF ONLY)
From here the countermeasure tube and the type of countermeasure to deploy is selected and
launched. If you are commanding a 688(I) or an Akula there is no separate station for
countermeasures. Countermeasures are launched from the Launch Panel.
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