An immersion system has been installed at a Scandanavian composite manufacturer for inspection of filament wound tubes. The system is unique being designed specifically to meet the requirements of the end user. It carries out a through transmission inspection of tubes, with a transducer yoke performing a helical scan over the tube rotating on a turntable. The turntable itself raises from the bottom of the immersion tank to a convenient height for loading and unloading. Sentencing of the parts can be done automatically by software analysis of the C scan data.