Marly Lite:
The only question I have is 4 crews to man 1 on call SAR stby cab? Surely this is overmanning? 1 day in 4 on shift?
1 cab on 1st standby for 24 hours a day with a second cab on RS60 (60 minutes notice) during daylight hours, 365 days a year.
Add to that 2 SAR Force crews in the Falklands at any given time. When you add courses, leave, filling in for medically downgraded staff and, perhaps, a day off, I think that your comments about overmanning are at best naive.
Unless, of course, you are part of the SAR Force and are sarcastically taking the p*ss.