The Navy ship HMNZS Manawanui has sunk off the coast of Samoa after running aground on a reef.
The 75 passengers and crew were evacuated into life rafts after the incident on Saturday night - a move that authorities say likely prevented loss of life.
But what caused the crash, what’s next and how much will the ship cost to replace?
The HMNZS Manawanui was on its third deployment to the southwest Pacific this year after leaving Auckland in late September.
The ship is a specialist dive and hydrographic vessel that is used to carry out a range of support, salvage and survey tasks.
Crew on board had been conducting a reef survey before the ship ran aground about 1 nautical mile off the south coast of Upolu, Samoa’s most populated island.
Unsuccessful attempts were made to get the ship off the reef before it began to list (lean to one side).
The passengers and crew were evacuated using four life rafts and two rigid hull inflatable boats, Chief of Navy Rear Admiral Garin Golding said.
Due to the “extremely challenging” conditions, it took the first survivors five hours to get to shore. An Air Force P-8A Poseidon was deployed to assist.
One of the small boats “flipped on the reef” during the rescue attempt and those who were on board walked to land, Golding said.
Samoa fire commissioner Tanuvasa Petone said three people who were on board needed hospital treatment.
“They ... have some minor injuries, and so we treated them at the site and transferred to them to the hospital.”
Golding said one person had a dislocated shoulder, while another had injured their back.
After all the survivors were ashore, the ship caught fire, capsized and sank. It was underwater by 9am on Sunday.
What’s next?
The Defence Force is sending planes to Samoa to bring the crew home. The first was expected to leave New Zealand on Sunday.
About 6pm, people at the Whenuapai air base reported that a Super Hercules was being readied for Samoa. It would be its first international deployment.