Giant wave in a wave tank

Giant wave produced with a hydaulically-powered wave generator in the Giant Wave Tank in Hannover in 2002. As part of the MaxWave project, a team at the Technical University of Berlin worked on simulating their production. Their work guided by computer modelling, the team found rogue waves appear to be formed when slow-moving waves are caught up by a succession of faster waves moving at more than twice their speed, then merge together.