Twenty more containers were lifted from the Rena yesterday, bringing the total removed from the stricken ship to 116.
After windy weather kept salvors at bay on Saturday, the crane barge Sea Tow 60 was back in action with forecast conditions looking favourable for the next few days.
Maritime New Zealand was continuing to investigate why Rena's charterers, the Mediterranean Shipping Company, did not declare a further 21 containers holding dangerous goods until last week.
The 21 containers contain 490 tonnes of cryolite, which is considered low risk unless ingested or inhaled in its dry powdered form.
Twenty of those were inaccessible and stored below deck in hold 3, which suffered considerable damage in the grounding.
Seventeen were understood to be submerged, but all were likely to have been submerged at some time as the ship had moved.
Tauranga MP Simon Bridges said while it was worrying the containers were not declared in the original manifest, he was "not overly concerned'' after receiving expert advice they posed little risk.
