Consider the following statements about Diver Detection Sonar (DDS) systems.

1.Purpose of this type of sonar system is to provide detection and classification information on underwater threats
2.These are acoustic location systems employed underwater for the detection of divers and submerged swimmer delivery vehicles (SDVs)

Which of the above is/are correct ?

Subsurface threats are a difficult problem, because reliable detection is available to date chiefly by use of high-resolution active sonar or trained dolphins or sea lions
The purpose of this type of sonar system is to provide detection, tracking and classification information on underwater threats that could endanger property and lives.
Further, this information is useful only to the extent that it is made available to authorities in time to make possible the desired response to the threat, be it deterrent or defensive action.
Government of India’s ‘Make in India’ Policy; Indian Navy, 2017, has concluded a contract with Tata Power Strategic Engineering Division for supply of Portable Diver Detection Sonar (PDDS) under the ‘Buy and Make (Indian)’ category.

By: kamaljeet kaur