Sonar, in England

Usage examples of asdic.

Radio reports, too, had their place and Asdic, of course, was the only defence against submarines.

It howled eerily through masts and rigging, blending with a wild and eldritch harmony into the haunting pinging of the Asdic.

The loudspeaker above the Asdic cabinet crackled urgently, the voice hurried, insistent.

Like Charteris, he immediately thought it was a U-boat caught surfacing in a snow storm, the pay-off of the attack by the Condors: the thought that Asdic or radar would certainly have picked it up never occurred to him.

Silence, complete silence, except for the sound of rushing water, the muffled roar of the great engine-room intake fans, the monotonous, nerve-drilling pinging of the Asdic-and these, oddly enough, only served to deepen the great silence.

Nothing from the Viking, nothing from the Sirrus, nothing from our Asdic-and that U-boat's still out there.

The voice died softly away, and there was only the roaring of the flames, the lost pinging of the Asdic.

Hard on the heels of that came the sickening realisation that there had been an Asdic operator inside there.

He, too, was staring at the Asdic cabinet, his face drained of expression.

They passed by the dead man stretched outside the gate, then stopped at the Asdic cabinet.

Beside him, two men had just finished levering the door off the Asdic cabinet, were flashing a torch inside.

For an instant, Turner saw the pale, staring face of Chrysler, Chrysler who had neither smiled nor even spoken since they had opened up the Asdic cabinet.

A hundred naval ships equipped with Asdic could search for a year and never locate just one solitary sub loose in the Pacific.

I understand that some of the latest U-boats are quite quick under water and one could easily be trailing us by Asdic without our knowing anything about it.

You wouldn't have to be a very efficient Asdic operator to know when engine revolutions are falling, then dying away.