User Guide

688(I) HIGH FREQUENCY ACTIVE SONAR
The 688(I)’s High Frequency Sonar controls are located in Ship Control.
To use 688(I)’s High Frequency Active Sonar (HFAS):
Press
¡
or select the Ship Control Station from the pop-up Stations menu to move to the Ship
Control Station.The HFAS system is located in the center portion of the station.The toggle switch
activates the High Frequency Sonar System (HFSS), which is used to detect small objects and ice
keels at short range.
The High Frequency Sonar screen shows the location of any object near your submarine’s bow.If
an object is close enough,clicking on it designates it as a HF sonar contact on the Nav map.
• Click
ON to activate the High Frequency Sonar System,
• To mark contacts (such as mines), point at the object and click on the object.Map markers
appear on the Nav map indicating all HF Sonar returns. No Contact ID is assigned and no
information is sent to TMA.
AKULA: ACTIVE SONAR STATION
Instructions for designating a target using Akula’s Medium Frequency Active Sonar is included in
Using Medium Frequency (MF) Active Sonar on p.83. Instructions for the use of Akula’s High
Frequency Active sonar follows a brief description of the Active Sonar Station buttons and panels in
this section.
Active Display: Shows results of active sonar echo ranging. Use of this display is explained in Using
Medium Frequency (MF) Active Sonar on p.83
Mark: Sends range and bearing of the selected contact to TMA and assigns an alphanumeric
Contact ID to the contact
• To select and mark a contact, position the cursor over the contact and click
MARK .
Track ID: Shows the alphanumeric identifier for the selected contact
90
Active Sonar Display
Contact
ON/OFF toggle
Active Display
Sonar Station
Selection Panel
Transmit Panel
Range Scale
Range
Bearing
Sub Com PC elec manual.qxd 7/25/01 4:59 PM Page 90