The Remote Pilot in Command (RPIC). The owner of the aircraft. The FAA.

Yes, the deck is considered a closed site. Yes, as long as I have a Category 1 or 2 sUAS equipped with Remote ID. No, the people on the deck are ...

ensure that the human beings who are not participating in the operation are under a covered structure or inside a non-moving vehicle. ensure the sUAS is equipped with a parachute make sure the area is closed or restricted-access.

55 lbs. or less. 55 kg or less. Less than 55 lbs. 

Remote Pilot in Command.  Contractor Site supervisor.