"I want to thank everyone for coming here to remember these two great men, who gave their lives trying to help others," Mr Brown said.
Mr Macrae's brother, Alan Macrae, recalled the conditions of a year earlier, when a similarly powerful wind was blowing but in the opposite direction, carrying thick clouds of smoke out over the bay.
"There's not a day that goes by that I don't think about William, but at the same time I think of all the people who've put their arms out and helped us," he said.
Family members completed the ceremony by throwing wreaths into the sea from the rocks and from a boat over the crash site. They gathered at Mr Macrae's and Jenny Larson's home at Awanui that evening to share a meal and their memories.
No one has ever been charged with lighting the November 30 fire, one of 14 suspicious blazes on the peninsula over 18 months, despite a lengthy police inquiry. That inquiry was hampered by what some have described as a cone of silence that protected the arsonist.
Principal rural fire officer Myles Taylor said it was disappointing that the culprit had not been identified, but the authority was committed to doing what it could to prevent future tragedies.
Both Mr Macrae and Mr de Ridder posthumously received Far North District Council Citizen's Awards in recognition of their service to the district by way of conservation and firefighting, and in many other areas.