A Ministry for Primary Industries spokesman said while one boat had been turned back from New Zealand this year, there had been no cancellations due to biofouling at either Port Chalmers or Fiordland this year.
Biosecurity New Zealand deputy director-general Stuart Anderson this month said that during the season to date there had been four "non-compliant vessels".
Three cruise ships had restricted itineraries and only one of the 54 cruise ships expected to arrive in the country had not entered New Zealand waters.
It was turned back because it was unable to meet the standards "vital for protecting our marine ecosystems and economy".
A spokesman for Cruise Lines International Association said cruise lines were committed to protecting the marine environment globally, including in New Zealand, which had some of the strictest biofouling requirements in the world.
"The revival of cruise operations in New Zealand has been largely successful. However, the industry looks forward to further discussions with New Zealand authorities on overcoming continuing barriers such as the lack of suitable hull-cleaning facilities within the region," he said.
