Fiji's Health Ministry said the MV Island Chief arrived in the country from Tonga on 2 December to unload cargo in Lautoka and headed to Suva.
Health Minister Ifereimi Waqainabete said prior to that the vessel was in New Zealand and the crew underwent Covid-19 tests there.
"They were tested before they left Néw Zealand," he said.
"So far they have been tested in Fiji and they have been found not to have Covid-19 and they are currently at the quarantine area of the Suva bay and are undergoing the normal processes of quarantine.