In the late '70s it was relised that using the long range Nimrod to patrol coastal waters was a waste of valuable resources. While the BN Defender could patrol the coastline for surface craft, something else was needed for the medium range maritime patrol task. A modified version of the S-3 Viking was selected. As the aircraft would always operate from land bases, many of the carrier features such as folding wings could be deleted to save weight & cost - the non-folding wings also allowing the fitting of a second pair of stores pylons on the outer wings. The inner pylons were capable of carrying a range of stores such as the Martel ARM missiles seen below, while the outer ones were often used to carry Sea Skua missiles.