Thanks for the paper Vidual.
An interesting paper (because it contains a great deal of information - albeit with some small errors and notable omissions) but, in my view, one that reaches the wrong conclusion.
It is unlikely that a Category A procedure for offshore operations (enforced PC1) will ever be practical for a number of reasons - which include: the necessity keep the landing surface in sight during the initial climb manoeuvre (to retain the ability to rejected without damage) and the lack of space to do other than initially to climb vertically - until losing sight of the deck (shown in the 1990s to be about 20ft - which has been stretched by the OEMs to 30ft); the requirement to miss the deck edge by 15ft during the continued take-off; the ability to remain 35ft above the surface of the water in all conditions; the small size of the FATO/TLOF; the 'obstacle environment'/'wind direction' issue; and, finally, the unrealistic expectation that the installed power will ever allow OEI hover performance in zero wind (which is required if PC1 is ever to be enforced).
Jim