Cable deployment in subsea environments is often hindered by low visibility and variable conditions. To address this, North Sea Systems has integrated the ISS360HD Imaging Sonar from Impact Subsea into its CableFish® system.
This setup provides real-time data and visualisation throughout installation, supporting accurate monitoring of cable touchdown points.
ISS360HD Imaging Sonar Capabilities
ISS360 Sonar by Impact Subsea.
The ISS360HD provides continuous acoustic imaging during deployment, including in zero-visibility conditions where optical cameras are ineffective. When deployed in a vertical orientation, the sonar delivers a side-on view of the cable, offering an alternative perspective for tracking its position and interaction with the seabed.
Key Specifications:
- 100 Meter Range: Suitable for long-range imaging applications
- 6,000m Depth Rating: Operates in both shallow and deepwater environments
- Pitch & Roll (Optional): Measures pitch and roll with 0.2° accuracy
- Compact Form Factor: High-resolution sonar in a small housing
- Broadband Transducer: Delivers detailed acoustic images over extended ranges
- No Slip Rings: Minimizes mechanical wear by eliminating rotating electrical contacts
CableFish® System Functionality
The CableFish® system integrates the ISS360HD sonar with the ISA500 Altimeter and ISD4000 Depth Sensor to support efficient and controlled cable deployment. These sensors work together to provide accurate positioning and consistent seabed clearance throughout operations.
North Sea Systems’ CableFish® system.
Operational Characteristics:
- Performance in Challenging Conditions: Functions effectively in shallow waters and areas with strong currents where ROVs may have limited effectiveness
- Real-Time Data Output: Supplies continuous data during installation to support informed operational decision-making
- Automated Altitude Control: Automatically maintains a fixed height above the seabed, supporting consistent monitoring and reducing the need for manual adjustment or additional personnel
By combining imaging, altitude, and depth sensing in a single system, the CableFish® approach supports precise and consistent subsea cable installations, even under difficult environmental conditions.
