Under MDAP Italy had received the PV-2 Harpoon for the anti-submarine role, but sought more modern equipment in the form of P-2 Neptunes. Instead, the US offered Trackers which would have the advantage of commonality with USN S2F-1s already operating with the 6th Fleet. Delivered from 1957, this example was one of the original six assigned to Napoli. They were always land-based and were progressively withdrawn through the 1970s as the Breguet Atlantic was introduced. The former USN Bu Aer number was adopted as the MM serial. The last Italian Tracker was grounded in August 1978.