Killer Ship. J.E. Macdonnell's Royal Australian Navy World War II Fiction, #12

It was a remarkable invention-a camera that could to take one brief, flash-lit shot of the night sea and discover with amazing clarity exactly what might be lurking out there in the darkness. But when the equipment was trialled aboard H. M. S. Wind Rode, it set in motion a chain of events that could only end in death. For there was a German submarine out there in the deeps, on its way to mine Jomard Pass and effectively cripple Allied shipping for the foreseeable future.
Furthermore, its commander was a fanatical Nazi totally dedicated to his job. But Peter Bentley was equally dedicated-dedicated to stopping the German from succeeding in his mission . and that's when the deadly battle of wits began between destroyer and submarine really started .