For maintenance work (waters, structures) and construction measures in hydraulic engineering, a tandem hook lift trailer with crane (mounted on drawbar) is required at the Deggendorf and Zwiesel river masters.

Permissible speed at least 40 km/h;

Permissible gross vehicle weight 11 - 13 t;

Maximum vertical load 2,000 kg;

payload at least 7 tonnes;

Control hook lift and tailgate via load-sensing system;

Crane: reach at least 8.50 m; lifting capacity at maximum reach without grab at least 700 kg; Load torque at least 65 kNm.