Scientific research relies on subsea sensors and underwater vehicles that can be deployed to specific sites in our vast oceans; knowing where they are and being able to receive accurate data from them underpins scientific results.

This means being able to site equipment, such as corers, camera platforms and geological drills, at a specific location in what could be thousands of metres water depth. While positioning accuracy today has come a long way from just 20 years ago, scientists are targeting ever smaller sites because the precision at which data and samples are taken matters: the distance between bleached coral and another that is recovering maybe just a meter or less.

The ability to position, control and communicate with this equipment, using high-speed telemetry, from one system, is key. Our Ranger 2 Ultra-Short BaseLine (USBL) family of acoustic technology can support positioning without having to first deploy a seabed array of transponders. It can also support deep and/or long-range tracking. For towed platforms, our iUSBL, which combines a USBL array head with a Lodestar AHRS in the same assembly, can support long-layback tracking, without needing calibration.

For long-term sensor deployments, we have transponders able to work in deep water that combine the functions of transponders, transceivers and telemetry.