The trust that operates Whanganui's Waimarie paddlesteamer is to carry out a planting regime with a Whanganui River marae in an attempt to offset the boat's carbon emissions.
The boat, New Zealand's only authentic paddlesteamer still in operation, is powered by high grade coal from Westport.
It uses 14 to 20 bags of coal for each trip to Upokongaro and back. Burning coal is one of the largest sources of global greenhouse gas emissions.
The Waimarie Operating Trust is to join forces with Pungarehu Marae to offset those emissions, chairman Stuart Hylton said.