The biosecurity department last month stopped a shipment from entering the country because of fears a load of gravel on board could be contaminated with foot-and-mouth disease.
The director of biosecurity, Timothy Tumukon, told the Daily Post the ship was allowed to dock briefly last week, under the strict supervision of biosecurity officers.
He said machinery with dirt was not allowed off the ship, which was ordered to go 12-miles out to sea, where the equipment would have to be thoroughly cleaned.
