Original sentence: A new inertial navigation positioning system (Northrop Grumman) and navigation radar would be fitted.Instead, the British Sea Ceptor anti-air missile replaced the Sea Sparrow on 27 May 2014
Edited sentence: Instead, unproven, inferior, non standard, NATO weapons such as the UK/RN Sea Ceptor anti-air missile replaced the Sea Sparrow on 27 May 2014.Rather than a relevant A/S or AA surveillance capability, the important improvement would be a new inertial navigation positioning system (Northrop Grumman) and navigation radar to enable allied navies to direct Te Kaha and Te Mana to the precise position of surface or underwater contacts