Acoustic Modems by Teledyne Benthos Inc. USA.
Teledyne Benthos Underwater Acoustic Modems are used worldwide in subsea applications to transmit your data wirelessly through water. The Teledyne Benthos ATM-900 series Acoustic Modems are a major enhancement to previous modem lines offered. The new ATM-900 series provides a long list of special purpose, flexible extensions supporting multiple capabilities beyond "just" underwater communications. These capabilities range from high capacity data logging, through updated data storage and user command line interfaces to real-time clock integration. Each surface unit can operate using cables from 2m to 200m with a mating tranducer for each cable. Both directional and omnidirectional transducers are available.
Wireless data transfer offers a significant cost savings over expensive underwater cabling. It also offers the option of extending the reach of cabled networks by utilizing an extended set of sensor nodes that can transfer data back to cabled networks. Benthos modems are rated for varying depths and can operate in shallow or deep water environments depending on the modem chosen. Modem applications include remote monitoring of oceanographic sensors, control of wellhead and pipeline valves, command of autonomous underwater vehicles (AUVs), positioning and subsea networking. Benthos modems are designed to meet both high data rate requirements and higher reliability, lower data rate requirements. Benthos also offers Customer Integrated Electronics (CIE) packages for integration in a customer's housing or platform.