A pair of boaters came up with a novel method for putting out a fire after another vessel became engulfed in flames on a lake in the South Island.
A group of people filmed the blazing boat at the edge of Lake Lyndon and posted the footage online on Thursday.
The footage shows black smoke billowing the small vessel as a man says, "If it goes bang... the fire's going to spread everywhere".
As the group of people onshore continue to panic about how to deal with fire, a sprint boat, a type of racing craft, suddenly appears on the lake heading straight for it.
A man onshore yells "What are you doing!" but seconds later the boaters' plan becomes clear, as they make a sharp turn next to the flaming vessel to shower it with water.
The sprint boaters circle around the lake and continue to splash the other vessel until the flames are put out.