With a 995 m operating range, extendable to 4,000 m, Mini-Ranger 2 can track up to 10 underwater targets simultaneously, including divers, towed instruments, ROVs and AUVs.
Opt for the Marine Robotics software pack and it will communicate with subsea robotic platforms, sharing position and allowing you to exchange data.

Expected system accuracy is 0.2%–1.3% of slant range, depending on system configuration. If you need higher precision or are looking for a USBL that you can use as a dynamic positioning reference, then take a look at our top performing USBL, Ranger 2 Standard, or Ranger 2 Survey.

Mini-Ranger 2 is a compact, easily installed system, so it’s the ideal choice for temporary installation on small survey vessels, as well as uncrewed surface vessels (USVs). It’s built around the same market-leading 6G hardware and Wideband®2 digital acoustic technology you’ll find in our entire family of USBL systems – even the software is the same.

HPT 3000
At the heart of the system is the HPT 3000, a highly capable surface-deployed USBL transceiver which is optimised for performance in shallow water, high elevation and long lay back operating scenarios, as well as data telemetry.

It’s typically deployed over the side of a vessel on a simple pole arrangement or under the hull of a USV. If the system is going to be permanently deployed, a though-hull deployment setup is possible.

HPT 3000 is connected to the system’s 1U-high Ethernet Serial Hub (ESH) and your PC running the Ranger 2 software application. Fit a transponder to each target you want to track and you’re ready to go. Mini-Ranger 2 is simple to configure and easy to use, even with no experience of acoustic tracking technology.

As standard HPT 3000 enables data harvesting from seafloor instruments using a crewed or uncrewed vessel.

Transponder options
A wide range of Sonardyne 6G transponders can be used with Mini-Ranger 2, allowing you to select the most appropriate model for each task. If you’re tracking divers, man-portable AUVs and micro-class ROVs, Nano is a popular choice. When tracking larger targets such as a towfish, a crane wire lowering a structure, or an observation-class ROV, WSM 6+ will meet your requirements.

And if you’re looking for a combined tracking and acoustic release transponder, RT 6 is now available. It allows you to deploy, track and recover seafloor equipment, all using the same instrument.