You are talking about integrated underwater harbour defence and surveillance system (IUHDSS) which is installed in harbours / ports . There is nothing secretive about it . It is meant to protect the harbour against enemy divers , midget submarines , saboteurs etc. And is installed in the periphery of the harbour itself . And no connection of mossad whatsoever .
We are talking about underwater surveillance / sensor systems which are deployed in deep seas / oceans . It is a totally different ball game. Eg
Underwater acoustic sensors or non acoustic sensors which as part of seabed arrays are installed on the floors of the sea / oceans over a large area of interest.
Satellites which can detect the submarine surface / subsurface wake , submerged submarine trail, localised wave and temperature variations usually associated with underwater / surface vessels . Even the periscopes of submarines.
Sensors which can detect the lingering magnetic signature left by a submarines wake. Such detectors can detect the same from a large distance and follow it to localize the submarine which is travelling underwater.
Underwater / overwater non acoustic sensors which can detect and discriminate subsurface / surface generated wake and wave signatures or any hydrodynamic signatures in seas / oceans .
Let me reveal something here , India already uses its satellites for ocean and sea surveillance since last 10 years or so inorder to detect surface and subsurface threats. DRDO had made a huge breakthrough in the science of free and forced hydrodynamics and ocean / sea dynamics which allowed them to detect and discriminate between the same long time back.
