[Expert testimony in vibration disease in inland navigation employees]

110 inland navigation workers, exposed to vibration and noise, have undergone electronystagmographic examinations. 61.7% subjects have developed disturbances of vestibular organ. The occurrence of those disturbances has been found to vary with the duration of vibration - and - noise exposure i.e. with the employment system. The 24 - hr - system poses a greater risk of vestibular organ disturbances than the 12 - hr - system. The investigation should promote setting - up some certification of the vibration disease in water transport workers.