Always approach a single rotor helicopter from the 2-3 oclock or 9-10 oclock position.
The 10-2 oclock arc can be very dangerous.
A S76 will take your head off and has.
A AS365 may take your head off and has.
A AS332 may take your head off if it is gusty or the a/c is starting up/shutting down
I have seen the blades of a 365 bend to within 2ft of the deck on shutdown.
Be safe offshore
HF