There always seems to be confusion about winds within limits for landing not applying to other evolutions like HIFR and hoisting. I can't recall the specific rules about HIFR, but I do know that air capable ships says that if you're going to hoist over the deck then the wind limits are the same. Despite the fact that this is spelled out verbatim in the pub, I've had numerous arguments with folks about hoisting people from a ship if the winds are out of limits. The end result is it's not legal. The landing wind limits aren't there for the 10' over the deck hover, but apply for the entire approach due to effects from the ship's superstructure, exhaust gases, etc. In order to hoist, you need winds within limits, so you might as well land unless the deck is fouled or some other extenuating circumstance. That being said, I don't recall the specifics of HIFR winds, but since it involves an approach to the deck and then hoisting, I'd think the limits would be very similar so I want to say that with winds out of limits you can't HIFR either. Another one that comes up a lot is "winds abaft the beam". Many ships don't want to give you winds abaft of the beam (apparent;y some HSLism ...of course....) despite the fact that wind limits are based on relative winds and say nothing about true winds. Since I usually depart perpendicular to the ships BRC, true winds from the stern are basically the same as true winds from the bow, since my hovering helo sees them as crosswinds. You do the approach to the normal spot so you can pick up the rig. Once the rig is onboard you slide over to port and come down to take on fuel. Hover references are nothing too weird, you just look at the boat. There's no "set" hover reference. I think there are HIFR lights for night ops that you're supposed to keep off the nose, but I've only read about them and hope I never have to look for them in real life. As you're sitting there hovering you just have to pay attention to salt spray, lest you make a bad situation worse by getting compressor stalls. Good times. There are two classes of HIFR rigs and I want to say it's based off of PSI that the ship can deliver. That H2P knowledge is long gone. Maybe Otto can tell us.