.......you don't need CHF...
Evaluator,
Sadly you do. Only the CHF are charged with being the experts in embarked amphibious helo ops. While the RAF (and AAC) may contribute task elements when required they generally have no interest other than "are the RN going to provide a safe system for me to operate from the sea?" and generally want to get on and off asap. The "safe system" is provided by maritime trained aircrews, engineers and ship staff who have an interest in the capability. Someone has to write the rules, regs and op procedures etc. So it is in the interest of the SofS that he has a body of people who have such a capablility......hence CHF. Indeed Cmd JHC has to ensure such a capability/expertise is available to CinCFleet and thus I assume he has been arguing heavily for its retention (but with the current incumbent I am not holding my breath.)