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Jack Richardson

GeoSpectrum Technologies (GeoSpectrum) has announced that it has been selected to deliver its Long-Range Acoustic Messaging (LRAM) system to an undisclosed Western customer, following a recent successful delivery of LRAM equipment to the Canadian Government. 

The LRAM system is a through-water acoustic communications system optimised for robust operation over long range, designed to send acoustically encoded tactical messages from a user-controlled station to a submerged submarine or other underwater asset while two-way communication can also be provided. The LRAM system enables covert communication with a submarine on an as-needed basis, without requiring the submarine to be at periscopic depth. Communicating like this can be vital for tactical comms with the submarine (mission re-tasking, target cuing, Blue-on-Blue prevention, etc.) or enhancing submarine safety by routine monitoring and handling distress situations. Communication can be in diverse topologies from a ship or off-shore site directly to the submarine or from a command station using an acoustic link on an expendable buoy, Unmanned Surface Vessel or manned ship.

The system configurations support strategic communication for ranges of up to thousands of kilometres, applying GeoSpectrum’s unique Very Low Frequency (VLF) source as well as tactical communication for up to hundreds of kilometres using Low Frequency (LF) sources while it can provide a means for reliable and secure remote acoustic activation or communications with Unmanned Underwater Vehicles and divers.