USBL – Sonardyne Ranger II – Survey Option 6G+

Ranger 2 is a survey grade Ultra-Short BaseLine (USBL) acoustic positioning system designed for deep water, long range tracking of underwater targets and position referencing for dynamically positioned (DP) vessels. The system calculates the position of a subsea target, for example an ROV, by measuring the range and bearing from a vessel-mounted transceiver to an acoustic transponder fitted to the target. Multiple subsea targets over a wide area and range of water depths can be simultaneously and precisely positioned.

Sonardyne Ranger


Operating Range: >6,000 metres

System Accuracy:

Typical 0.2% of Slant Range

Optimised 0.1% of Slant Range

Number of Targets Tracked: 1 surface, unlimited subsea

Position Update Rate: 1 second, independent of water depth

Output Telegrams:

Supports all industry standard survey and DP telegrams

Deployment Method

Through-hull or Over-the-Side

Operating Frequency

MF (18-36kHz)

Acoustic Coverage

 ±90° or ±50° (Depending on transceiver type)