Get some of the Aramco pilots to explain their magic....they fly the 412EP's at 11,900 and do not cut weight except for night flying....and it gets rather warm in Saudi....
Their operation (off-shoot of PHI according to most folks in the know) does not consider CAT A performance at all....nor do they use any sort of identifiable CAT A profiles.
As I recall...with some clarity due to the lack of adult malt beverages in that part of the world....they basically used miminal climb and accelerated as quickly as possible to 60 kts....on takeoff from the rig and then considered that CDP of sorts. Lofting off some of the elevated decks there that were all of 25 feet above the briny....that could be an interesting proposition in my view.