Very impressive, it was only a few years ago that a Seaking from Mount Pleasant (Falklands) flew almost to South Georgia to collect a patient from a cruise ship. The flight involved two deck landings for refuel from an RFA and two hover refuels alongside HMS Dumbarton Castle due to sea state not allowing a landing. Total airbourne time for that one was I believe in excess of 12 hours with effectively no SAR coverage for the rescue aircraft. Top cover would have been provided by a herc.