For more details visit www.marinemegastore.com or call 0871 8732404 1 For more details visit www.marinemegastore.com or call 0871 8732404 e have spent many thousands of man hours at sea improving sonar design, and almost as much time at shows or on the phone listening to customer's needs. This information was the basis of the brief to our design department that resulted in the greatly improved EchoPilot FLS Silver and FLS Gold .