According to the Swedish Government, the Swedish Defence Material Administration, Test and Evaluation (FMV T&E) is given the task to support the Wehrtechnische Dienststelle für Schiffe und Marinewaffen Maritime Technologie und Forschung (WTD 71) in underwater trials. On FMV request, FOI supported WTD 71 to perform a trial regarding phenomena of bubble breakup from underwater explosions at different distances from the seabed. The trial has been performed at Älvsnabben test area with satisfactory results.