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Related Clues:
- System to locate underwater objects
- Underwater location equipment
- System for locating underwater objects
- Hydroacoustic tool
- Sub navigation tool
- Relative meets artist coming back for listening device
- Torpedo detector
- Shipwreck locator
- Echolocation
- Hydroacoustic device
- Help in finding objects on a river bed
- Method for detecting submarines
- Navigating system
- Fish-finding device
- U-boat finder