Having flown Marine Pilot Transfers in North Aust. in underpowered (single engined) helicopters. I can assure you, nothing raises the heart rate more than lifting from a well lit moving ship into the BLACK.
With no visible horizon and no external lights (towns etc.) they call it night VFR......................
CASA was looking at changing the Regs. sometime ago to outlaw this sort of activity......pity they were just looking.