 The ships reached Kiel , where it was thoroughly examined . The dockyard workers found that eight of the ship 's boilers had been badly damaged , and many bulkheads had been bent from the pressure of the water . The keel was extensively damaged , with large holes torn in several places . All three of the ship 's propellers were damaged as well . Temporary repairs were effected in Kiel , which included sealing the holes with cement and wood . On 23 April the ship was moved to Wilhelmshaven , where she was completely repaired . A subsequent investigation found that the nearby lightship — which was used to navigate the channel at night — was 700 meters ( 2 @,@ 296 ft 7 in ) from its assigned location , and there were several uncharted rocks in the area of the accident . 
