EFESydney, Australia

The first international aid supply ship arrived in Tonga's capital from New Zealand on Friday, six days after the island nation was hit by a devastating tsunami.

It came a day after a Royal New Zealand Air Force C-130 Hercules arrived carrying the first flight disaster relief items, followed by another from Australia.

HMNZS Aotearoa arrived in Nuku'alofa Friday loaded with 250,000 liters of drinking water and the capacity to produce 70,000 liters per day, the New Zealand High Commission in Tonga said.

Water supply contamination by volcanic ash and sea water has made the shortage of drinking water one of the most urgent problems the country is facing.