Recovery of weapons and ammunition from the sunken HMZS Manawanui will begin as the salvage crew has completed the removal of diesel fuel and pollutants eliminating an environmental threat, New Zealand Defense Force officials said on Wednesday.

The next phase of the operation focuses on recovering weapons, ammunition, equipment, and debris from the wreck, according to Commodore Andrew Brown, the NZDF Senior National Representative for Operation Resolution.

“After a brief visit to the Port of Apia to reconfigure the salvors’ barge, it’s back moored over Manawanui and they are making steady progress,” Commodore Brown said.

The New Zealand Navy Ship sank on 6 October 2024 off the coast of Tafitoala. All 75 crew were rescued, however, more than 200,000 litres of diesel was spilt into the ocean.

Commodore Brown said they have accessed secure compartments to retrieve weapons and ammunition using specialised diving and salvage techniques.

Each item is meticulously accounted for, with serial numbers checked and photographic records maintained.

Authorities have worked closely with the Samoan Police Service to ensure the safe and secure storage of recovered weapons and ammunition. 

According to the NZDF, some of the ammunition has deteriorated due to prolonged exposure to seawater and is being safely disposed of with assistance from Samoan officials.

Commodore Brown said the remaining weapons, equipment, and debris will be transported back to New Zealand.

"Efforts are now focused on securing the vessel. The Samoan and New Zealand governments are determining the next steps, with independent experts conducting a wreck assessment. The evaluation includes studies of the reef and marine environment surrounding the Manawanui," he said.

"The Scientific Research Organisation of Samoa continues to monitor the area and has reported no contamination of seawater or marine life.

“While the recovery efforts will take time and naturally be affected by sea and weather conditions as we have experienced,” Commodore Brown said. “New Zealand remains committed to a careful and thorough job,- Our priority continues to be to minimise any possible environmental impacts and we are committed to doing the right thing."