Wellington's shipping container operation is still suspended due to earthquake damage.
A first look at the port today showed significant cracks and liquefaction on the main container wharf.
The threat of aftershocks and bad weather have hampered efforts to assess damage and carry out repairs.
But much of the port is operational, with rail and ferries resuming within days.
A cruise ship is also due to dock there on Monday.
Chief executive Derek Nind says significant progress has been made since Monday's 7.8 magnitude quake.
"We have moved from a situation six days ago when we had no water, no electricity, no phone lines and no email, to the current position where we have large areas of the port up and running.
"Engineering inspectors were needed everywhere to make the port safe, and they are ongoing. We had to review all operations and processes in light of the earthquake."