Further charges have been laid by Maritime New Zealand (MNZ) against the Master and Second Officer of the Rena, following the ship's grounding on Astrolabe Reef off Tauranga on 5 October.
Both men each face one charge, under section 338 (1B) and (15B) of the Resource Management Act 1991 (RMA), relating to the "discharge of harmful substances from ships or offshore installations''.
The RMA charge carries a maximum penalty of a fine of $300,000 or two years imprisonment, and $10,000 for every day the offending continues.
The Master and Second Officer (Navigation) had earlier been charged by Maritime New Zealand under the Maritime Transport Act 1994 (MTA) "for operating a vessel in a manner causing unnecessary danger or risk''.
They have been remanded on bail without plea to reappear in the Tauranga District Court today (Wednesday) on that charge and will face the RMA charge at the same appearance.
Their names and identities are suppressed.
The MTA charge carries a maximum penalty of $10,000 or a maximum term of imprisonment of 12 months.
No aerial observation flights have been able to go out to the Rena this morning due to poor visibility.
MNZ said this is unlikely to change before this afternoon at the earliest.
However, both the nearby tug Go Canopus and the on-board sensors confirm the Rena remains intact.