In fact, Chelsea Technologies has wide ranging experience of producing both sophisticated and simple echo repeater systems for the highly specialised defence market through its acoustic design heritage. This experience spans several decades from the first system “CUSTERD”, designed and built in 1995 and used for many years by the UK MOD on trials. More recently systems have been supplied to the USA with systems also deployed with non-NATO navies. What is ERAS? Chelsea Technologies’ Echo Repeater Acoustic Source (ERAS) is a self-contained sonar calibration, test and training system for use on small vessels. An included ruggedised laptop computer isRead more