An investigation is underway.
The crash scene was found shortly before 8:30pm on Sunday.
In 1902 the vessel sank off the Hokianga Harbour. It was carrying the bones of 499 Chinese gold miners.
Wairongoa Renata's death could have been avoided had appropriate warnings been in place, a coroner has ruled.
Up to four packs, around 15 feral dogs, had recently been sighted by hunters and landowners.
Some are so desperate for sleep they've spent thousands soundproofing their homes.
A Whangārei producer is expanding its operation in the hopes of tapping into growing demand for year-round supply of fresh fruit.
"We wholeheartedly apologise for this and the effect it had on people."
The DHB is warning people to avoid swimming and seek medical advice if they feel unwell.