Sonardyne’s family of Fusion Ultra-Short Baseline (USBL) transceivers support the use of modern Wideband signal technology, offering improved noise immunity, increased dynamic range and greater accuracy.The Type 8021 transceiver offers a pattern of acoustic coverage whilst still ensuring rejection of vessel noise. The transceiver allows tracking of targets from below and to the side of the vessel and it is suitable for a wide variety of survey tasks such as tow-sh tracking and ROV positioning. The Type 8023 transceiver is optimised to receive signals arriving within a ±50º cone.