Multraship Salvage has completed the lifting of the 79m trailer suction dredger Thor R, which sank in the mouth of the Danish port of Esjberg on September 26. into the port. The wreck removal operation was complicated by strong tides, which allowed only 4 hours of diving time per day, and soft sand bottom, into which the wreck continually sank. equipment available. into the port of Esjberg by the sheerlegs and tugs yesterday. dry dock where full repairs will be made. Multraship is a leading independent Dutch towage and salvage company. the Muller family, it draws on more than 85 years of experience. support for inland navigation. highly-trained masters and crew.