Refinery prohibited area and Northport exclusion zone:
- There is a permanent prohibited area around the oil refinery wharf (shown on chart NZ 5214).
- When the exclusion zone is in force, fluorescent ‘Keep clear’ signs (by day) and flashing lights (by night) are displayed on the seaward side of the ship.
- Keep clear of the shipping channel when vessels over 500gt are transiting.
- Do not anchor in the channel.