Possibly because there is nothing really new about Sea Ceptor and its components seem to have the touch of plug and play about it? It utilises bits of existing kit with some tweaks. Based on ASRAAM technology, seeker derived from the one used in MICA, existing uplink technology and proximity fuse. Its simplified by soft launch, but uses well tried and tested MDBA pitch and control mechanisms. It is cued by a new radar that has been designed to plumb straight into the Type 23 combat management system with just a few software tweaks and as I understand it the system uses a set of predictive algorithms to cope with fast agile targets, a ship will carry more missiles than sea wolf, and each missile is cheaper so copes with course changing incomers by firing two? In simple terms, an incoming missile can go straight, or jink left or right, so pop off two missiles slightly offset and there is a good chance the active seeker will find it, with a good probability the agile missile body can catch it. (explained to me by a mate in the navy, I'm not good with the details)
I wouldn't be surprised to find that the recently upgraded ships have already received the initial Sea Ceptor requirements and the actual swap over will be quite simple, rip out the sea wolf tubes, drop in the 48 cold launch cells, remove the trackers and add artisan, the power requirements, cabling and software should all be the same generation. It should be quite a clever solution if they can pull it off.
Latest I can find is that all T23 should get Artisan by 2015.
