Havila Voyages completed a 12-day Bergen-to-Kirkenes coastal route using biogas, cutting emissions by 90% compared to conventional fuel. <br><br>Reference:<a href="https://skift.com/2026/05/01/how-a-cruise-line-cut-emissions-by-90-on-a-12-day-voyage/" target="_blank">Source</a>.<br><br>