A Westland Whirlwind Mk10 helicopter of RAF Coastal Command demonstrates the double lift rescue technique somewhere off the coast of Britian in 1963. This photograph used to illustrate a 1964 Ministry of Defence White Paper
I must say that Geoffers' description of the Whirlwind winching itself towards the sea was quite amusing and, given the proximity of the craft (above) to the water I dare say that something similar might be going on although, presumably, the Mk 10 may have had a little more power than the 7?
One wonders what the next move would be on the part of the crew if, say, they managed to barely winch a survivor out of the water but were unable to deliver any further performance. Perhaps the driver would nose forward dragging the rescue fodder along the sea like a Wallis bomb until translational lift occurred! Lol, what fun times they must have been!
The Suez Crisis
Operation Musketeer 1956: Men wounded in operations were given treatment in the well equipped sick bays and surgeries of British aircraft carriers. Here a wounded soldier is lifted from a Whirlwind helicopter after being transferred from the beaches at Port Said to the flight deck of HMS Eagle