In late 2006 the S2C2 pathfinder suggested that the RN surface based combatant future might be the T45 Air Defence Destroyer (basically for high end AAW) plus variants of new ships with common hulls and systems in the following three categories:
1. High end Force - ASW/Land Effect. Discrete modular capabilities (MCM, helo, UAV, etc)
2. Medium weight – optimised for small scale ops and securing lines of communication
3. Low end - Constabulary Oceanic OPVs, Specialist MCMs, etc
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Current S2C2 thinking had developed into plans for the replacement of the RN's current Type 22 Batch 3 and Type 23 frigates, plus a range of minor war vessels, with three new classes of surface combatants. Cdr Brunton identified these as:
* a Force Anti-Submarine Warfare (ASW) Combatant (known as C1)
* a Stabilisation Combatant (C2)
* an Ocean-Capable Patrol Vessel (C3).
He said "The plan we have developed takes eight existing classes down to just three. The capability currently delivered by the Type 22s and Type 23s would be replaced by C1 and C2, while C3 would replace the capabilities of our existing mine warfare fleet but also offer additional capability for maritime security tasks."