Seatronics Ltd., have recently announced the addition of two new models to their range of ground discrimination systems. Replacing the existing 100 and 200 models the 101 and 201 systems provide a number of internal improvements. “In order to remain a leader in this field we are constantly developing the technology and can now offer an improved product to our customers. Hamish went on to say that these changes were the result of work done on their “top of the range” ECHOplus system, primarily designed for the scientific market. It is through work with various scientific institutes that Seatronics have been able to identify a number of improvements in the system and incorporate these into the seascan product range.