The SeaLink™ Passive or Active in-line tension module delivers accurate, real-time cable tension monitoring and integrated seismic data acquisition for offshore marine seismic operations. 

Designed to operate within the SeaLink™ Recording System, the module provides continuous load measurement for streamer, source, and towline systems while maintaining reliable telemetry and seismic performance in demanding offshore environments.

The module is housed in a rugged 3.0-inch OD titanium enclosure with double O-ring sealing and nitrogen fill, providing corrosion resistance and reliable operation under extreme pressure and environmental conditions.

SeaLink Repeater Module
The SeaLink repeater module is designed to extend uplink and downlink telemetry for streamer configurations exceeding 300 meters in length. The repeater shares the same physical dimensions and form factor as the SeaLink 24 channel module and operates from a 750–800 mA DC constant current loop at 8 VDC, with approximately 6 to 6.5 Watts.

The SeaLink repeater does not contain analog circuitry for seismic data collection and does not reduce the system’s available channel count. 

Each repeater module is housed within a rugged titanium module featuring dual O-ring sealed and an internally pressurized design. The module is rated for 1,524 meters of crush depth, ensuring reliable operation in demanding offshore environments. 

Note: Any SeaLink 24 channel module can function as a full-feature repeater when correctly configured within the Cable Set File.