Lower emissions in shipping (IMAGE) KTH, Royal Institute of Technology Caption Researchers at KTH Royal Institute of Technology developed a model for estimating the speed and extent of biofilm growth, which could enable ship operators to schedule hull cleaning at optimal intervals to save on fuel consumption. Credit David Callahan Usage Restrictions No restrictions. License CC0 Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.