NATO Begins 'Dynamic Mongoose' Sub-Hunt Exercise

Naval forces from 10 NATO nations and Sweden have launched one of its biggest-ever anti-submarine exercises in the North Sea in Norway to practice detecting and hunting submarines in an annual exercise whose real-world relevance has grown in the past year.

Dubbed 'Dynamic Mongoose', the training pits submarines from Germany, the U.S., Sweden and Norway against surface ships employing a suite of sonar, sensors and maritime air patrols.

The exercises are expected to last until May 13 and involve more than a dozen warships and submarines, as well as planes and helicopters.

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