Once upon a time Every U/T helicopter pilot went to Valley and did the SAR winching course. On an SH Squadron some used to practise if they were the only rotary facility available, ie Belize/Harriers. I, being the only person who had done the Valley course became, with zero further experience, the winching instructor, just in case we had to fish a Harrier pilot out of the Oggin.
I would expect, both Naval and Land based, that the basic training would be incorporated to cover such an eventuality. That is different from a full time SAR cover.