I’m thinking a helicopter taking off from a ship underway is always doing the equivalent of a rolling take off ?
Does this require a particular technique
The only difference operating on a ship is the ship heaving, rolling and pitching. In order to land once had to get the ship to run down wind in big seas, to get a steady deck, and then land facing the stern and into the 40 knot wind.
SAS, 5800? One I can't answer, never noted the RPM when running out of pedal and having to chop the throttle, only time I ever saw that figure was on start up, shut down, or pulling pitch at the bottom of an auto. My Vietnam time was in the H, though went for rides in the left seat with the C chaps on my days off to see how they went about their business.