is fitted with an inspection head 14 an ultrasonic inspection head in the exemplary embodiment such as is known for example from european patent application ep 0 452 516 a1 fig1 illustrates a situation such as arises from an ultrasonic inspection of screws 16 in the core baffle 18 of a reactor pressure vessel as illustrated in fig1 a multiplicity of these screws 16 are located in corner positions of the core baffle 18 that cannot be directly centrally approached because of the relatively large dimensions of the underwater vehicle 2 it is now possible to use the rotary or pivotable carrier 6 to inspect screws 16 in corner positions even when the underwater vehicle 2 is located laterally offset from these corner positions in accordance with fig2 the underwater vehicle 2 drawn only schematically is provided on its end face 4 with a camera 20 with integrated illumination which can be used for visual monitoring of the traveling motion of the underwater vehicle 2 arranged on the underside of the underwater vehicle 2 is a first rotary drive 22 with a shaft 24 on which the carrier 6 is fastened at the end face the carrier 6 is constructed in the exemplary embodiment from a ring 62 that is fixed via spokes 64 at the end face on the shaft 24 and can be pivoted u2014 in the exemplary embodiment it.