The Indian Navy on November 18, 2016 formally inducted four types of indigenously developed sonars that will enhance its subaquatic surveillance capability.
The systems included Abhay – a compact hull mounted sonar for shallow water crafts; Humsa UG – an upgrade for the Humsa sonar system; Near-field Acoustic Characterisation System or NAC; and Advanced Indigenous Distress sonar system or AIDSS, for submarines.
Defence Minister Manohar Parrikar, who on November 18, handed over the sonars to the Navy, commended the force along with the Defence Research and Development Organisation (DRDO) and said he expects more cooperation in coming days.
Going along the lines of Make-In-India initiative, the systems have been designed and developed by Naval Physical and Oceanographic Laboratory, a Kochi-based laboratory of DRDO.
With the induction of these four systems, the underwater surveillance capability of the Indian Navy will get a boost, besides providing a fillip to the quest for self-reliance in this critical area of technology.
Abhay is an advanced active-cum-passive integrated sonar system designed and developed for the smaller platforms such as shallow water crafts and coastal surveillance/patrol vessels.
It is capable of detecting, localising, classifying and tracking sub-surface and surface targets in both its active and passive modes of operation.
The prototype of this compact sonar installed on board a nominated naval platform has successfully completed all user evaluation trials to demonstrate the features as per the Naval Staff Qualification Requirements.
Indian Navy has proposed to induct this sonar on three of its Abhay class ships.
Intensifying the command over the high seas is the Humsa-UG, which is designed for upgrading the existing Humsa sonar system.
This system is proposed to be installed on seven ships of three different classes.
AIDSS, a distress sonar, is an Emergency Sound Signalling Device which is used to indicate that a submarine is in distress and enable quick rescue and salvage.
It is a life-saving alarm system designed to transmit sonar signals of a pre-designated frequency and pulse shape in an emergency situation from a submarine for a long period, so as to attract the attention of passive sonars of ships or submarines in the vicinity and all types of standard rescue vessels in operation.
It is also provided with a transponder capability.