Introducing the SeaTrac X150 Micro-USBL tracking beacon. Built around a robust broadband spread spectrum signalling scheme, this multi-purpose acoustic transponder beacon is capable of simultaneously tracking up to 14 other asset positions while undertaking bi-directional data exchange. Applications include... Multi-beacon tracking system (for ROVs, AUVs, Divers etc). Remote control and interrogation of sub-sea equipment AUV/Diver telemetry links Remote depth, attitude and orientation measurement. Position Tracking When used in a tracking application, one X150 is mounted from the supervisor vessel, and connected to a PC running the SeaTrac NavPoint display and logging software. All positions are computed by the X150 beacon, so no additional PC hardware is required. Sub-surface assets to be tracked (including Divers, ROV's, AUV's etc) are fitted with an X110 beacon, and optionally may use the data port to provide periodic acoustic communications with other systems and sensors. In this mode up to 14 beacons may be tracked at ranges up to 1km from the supervisor, with the position of each being optionally broadcast to others in the network.