Dear Redouan You are absolutely right. The International Tonnage Certificate is a virtual measure based on the volume of the ship. And yes it is expensive to get the measurer to make the line-drawings again and calculate the volume that is one of the basic parameteres of the tonnage calculation. I will try my luck with at Amel, if there is no Irish or Swedish registered SM with the needed numbers or calculations or line-drawings. Thanks for your answer. Kind Regards Jeppe, SM464 _/_/)