forensiclab
Materials
- Nov 24, 2002
- 33
Not sure if this is the right group to put this question, but I do not see a navel architect group.
I am engaged in an exercise to evaluate some old drilling rigs and I need to approximate the total weight of steel. I am told that the correct term for what I am after is the 'lightweight', essentially the weight when built in the shipyard. The problem is that the lightweight is not indicated for any rig that I can find on the internet.
What is indicated is the gross tonnage, which for conventional vessels is based on volume and can be used as a measure for cargo. Apparently if you know the type of vessel, you could approximate the weight by using some factor. However a drilling rig is such an unusual structure that old sea captains I have spoken to are not sure what gross tonnage even means when applied to a drilling rig.
Can anyone point me in the right directions?
I am engaged in an exercise to evaluate some old drilling rigs and I need to approximate the total weight of steel. I am told that the correct term for what I am after is the 'lightweight', essentially the weight when built in the shipyard. The problem is that the lightweight is not indicated for any rig that I can find on the internet.
What is indicated is the gross tonnage, which for conventional vessels is based on volume and can be used as a measure for cargo. Apparently if you know the type of vessel, you could approximate the weight by using some factor. However a drilling rig is such an unusual structure that old sea captains I have spoken to are not sure what gross tonnage even means when applied to a drilling rig.
Can anyone point me in the right directions?