The submarine could also carry a diver in the nose rather than a magnetic mine.

Less than three months after the outbreak of war the Germans had come up with a rather unpleasant device - the magnetic mine.

One became stuck in a tank trap and another was knocked out by a magnetic mine.

"That demagnetized the whole ship so you didn't attract magnetic mines," he said.

They didn't need their flashlights to tell it wasn't a magnetic mine.

They who survived war played an active part for minesweeping of magnetic mines.

She struck a magnetic mine and sunk on 4 November.

Perhaps his most significant contribution was the design of an effective counter-measure to the German magnetic mines.

Hitler's 'secret weapon' of the time was the magnetic mine.

A degaussing station was built to provide protection for ships against magnetic mines.