Interestingly the new P8 Poseidon doesn&#x27;t have Magnetic Anomaly Detection (MAD) equipment on the US variant, though the Indian one has had it fitted. You need to fly low for it to work which is less efficient for the jet powered P8 compared to the older P3. So if you&#x27;re generally flying higher and up against submarines which have been demagnetised there&#x27;s less need to fit MAD.<p>Surface warships are also degaussed to help avoid magnetically triggered mines.