A temporary moving exclusion zone has been set around the barge transporting sections of the dismantled Rena accommodation block to the Port of Tauranga.
Tomorrow marks the second anniversary of the day when the Rena wreck split in two during rough weather.
On January 9, 2012, the stern was left to sink on the reef and up to 300 containers fell overboard.
Bay of Plenty Regional Council's harbour master Jennifer Roberts said Resolve Fire and Salvage was working on removing large pieces of wreck from Astrolabe Reef and transferring them from the crane barge, RMG500, onto a deck barge, RMG1000 which will be anchored near Motiti Island.
The deck barge will be secured in place by four or more anchors, each marked with a large orange-yellow buoy and lit at night with a yellow flashing light, Ms Roberts said.