The Spirit of Enderby arrived in the port of Lyttelton on Tuesday ahead of summer and the subantarctic tourism restart.
After a 30-day voyage to New Zealand from Vladivostok in Russia, her crew have completed testing and Covid protocols on arrival.
She is one of the few cruise ships to have been given an exemption to the maritime border order which so far has kept most ships at bay.
Next Tuesday Spirit of Enderby also known as the Professor Khromov will take fifty guests south, on a tour of Fiordland and into the Auckland Islands and Antipodes for a month-long sailing.
Directors Nathan and Aaron Russ welcomed what they hoped would be a successful summer season exploring the lesser visited parts of New Zealand.