Boaties come to the rescue of burned Brown's Island

A huge crop of weeds has emerged from the ashes of a huge fire on Brown's Island in the Hauraki Gulf last year.

The weeds went largely ignored by the public until a team of boaties came on board, ferrying volunteers to the island to help.

"A lot of people think boaties are all about racing around - we love to get on the beach and clean the beaches up and pull a few weeds," chief executive of the Outboard Boating Club Brian Hood told Newshub.

"A great day out on a boat is to come to an island where you've actually contributed to the welfare of that island."

Just over 32 acres were burned last year, when a woman in her 30s made her way to the island and lit a fire. There were concerns for her mental wellbeing at the time.

In a statement to Newshub Auckland police said she lit a small signal fire for the purpose of being rescued, genuinely feeling she needed help, before it got out of control.

Figures released to Newshub under the Official Information Act show the cost of fighting the fire was just under $90,000.

Police said a detective did investigate for a number of weeks but no charges were laid.

The blaze disrupted the seed bed underneath the native grass, leaving an "extensive reinvasion of pest plants", park ranger Jonah Kitto-Verhoef said.

"It's been somewhat neglected over the years," Waitemata and Gulf councillor Mike Lee told Newshub.

"But I believe it will be coming into its own... it's an absolutely beautiful gem of a place."

Surrounded almost entirely by a reef, Motukorea is not easily accessible. But now it's under council management and a discussion around more facilities on the Island is on the agenda.

Newshub.