User Guide

To select a signal in Narrowband Search Display:
Click the peak of a signal. (You can drag the cursor left/right to search for signals.) The sound
signature of that signal is sent to the Narrowband Waterfall Display where it appears as lines.
Straight lines indicate a consistent signal.Wavy lines indicate that the signal is distorted. Faint lines
indicate a weak signal.
NOTE: Ownship’s speed can affect your ability to detect contacts in Narrowband.When the entire
signal line is near the top of the display this indicates that background noise is very high.
This usually happens when your speed is over 5 kts for hull array contacts or over 15 kts for
towed array contacts. Decrease your speed to reduce water flow over the array.
Classifying the contact
Match the frequency lines in the Waterfall Display with the frequency lines in the Ship Classification
window.Cycle through each of the profiles selected from the ship’s database of sound signatures
to determine the closest match.
1. Click NEXT or PREVIOUS to view the sound signature named in the profile selector in the Ship
Classification window.
2. Adjust the frequency range to better see distinct ranges.
3. When you decide which ship’s signature best matches that of the selected contact, simply leave
that class name selected in the Classification window,make a mental note of the bearing of the
contact and leave the Narrowband Station.
That class name last selected in the Narrowband Profile Selector is sent to the Contact menu’s
Classify Contact dialog available on the Nav map.
On the Nav Map
1. Select the symbol of the contact that you just identified in Narrowband.
NOTE: If the contact that you have classified in Narrowband has not yet been assigned a Contact ID
(S1, S2 etc), no contact ID symbol exists for that contact on the Nav map.You can not
complete the contact classification process on the Nav map until the contact has been
assigned a Contact ID.
2. Right-click the symbol of the contact to display the Contact menu.Select Classify Contact. Select
the class name determined in the Narrowband Profile Selector.
■ If you have just come from Narrowband, the last class name you left selected in the
Narrowband Profile Selector is highlighted in the Class list when you select the same contact on
the Nav map.
NOTE: You can classify contacts in ESM, Stadimeter and Narrowband.The Classification dialog
highlights the name of the class that was most recently classified by one of these sensors
whenever you select that contact on the Nav map.
3. Assign a level of confidence in your classification. Click LOW , MEDIUM or HIGH .
4. Assign an alliance to the contact. Click ALLIED , THREAT , NEUTRAL or UNKNOWN .
5. Click OK .
■ The classification you have assigned to the contact now appears in the Navigation Data Display
and the 3D model of that class appears in the 3D view when that contact is selected on the Nav
map.
Selected Array: Select the array you want to view in the Narrowband Search Display. Click Sphere,
Hull or Towed icon button.
• Click the appropriate button.The button in the bow of the sub outline represents sphere, the
button in the middle in represents Hull, and the aft button represents the Towed Array.
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