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Ultra-Short Baseline and Super-Short Base Line is a method of underwater acoustic positioning. A USBL transmits an acoustic pulse which is detected by a transceiver and converted into a range. With both range and distance measurements, a USBL or SSBL is able to position an [AUVs - Autonomous Underwater Vehicles] or [ROVs - Remotely Operated Underwater Vehicles] kilometers away with a 0.1 angle accuracy.

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36 results
iXblue GAPS


Gaps is a high performance Ultra Short Baseline positioning system for locating subsea assets. It combines an USBL antenna and a fiber-optic inertial navigation syst

Alpha Portable USBL
Alpha Portable USBL

Applied Acoustics

Easytrak Alpha Portable is the compact, carry on version of the Applied Acoustics’ range of lightweight USBL tracking systems that use a vessel mounted transdu


Advanced Navigation

Subsonus is a next generation USBL underwater acoustic positioning system that provides high accuracy position, velocity and heading at depths of up to 1000 metres.

Lodestar GyroUSBL 5000
Lodestar GyroUSBL 5000

Sonardyne International

SeaTrac X150+X110 Micro-USBL System
SeaTrac X150+X110 Micro-USBL System

Blueprint Subsea

Multi-purpose 'ultra-short base line' acoustic transponder system including X150 USBL beacon and X010 beacon.Broadband spread spectrum signalling scheme capa

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