CM2 Sidescan Sonar User Manual Contents
CONTENTS
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1. Summary of Warnings ………… 1
2. System Components ………… 2
Towfish
Sonar Transceiver (STR)
C-Shell
C-Case 2
C-Case SE
Tow Cables
Accessories
Specifications
3. Installing the System ………… 6
Data Acquisition Subsystem
Tow Cable
Installing a Winch and Pulley (if used)
Securing the "soft" Tow Cable (if used)
Attaching the Towfish
Checking System Operation
Spares and Tools
4. Planning the Survey ………… 11
Survey Plan
Line Spacing
Line Direction
5. Operating the Towfish ………… 13
Pre-launch Check
Launch
Flying the Towfish
Recovering the Towfish
Action if the Towfish Fouls
6. Operating Guidelines ………… 16
7. Notes for the Helmsman ………… 17
Navigation
Steering
Emergency Actions
8. Towfish Commands ………… 18
Towfish Command Set
Bottom-tracking, Up and Down
Mute, On or Off
Shallow Mode, On or Off
Gain Hold, On or Off
Gain, Up or Down
9. Interpreting the Sonar Image ………… 19
Water Column and Bottom Image
Highlights and Shadows
Image Corrections
Causes of Image Defects
10. Routine Maintenance ………… 21
Routine Maintenance
Replacing the Towfish Breakable Washer
11. Storage and Transit
………… 22
Version 3.6 (2008)
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