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Table B1 Conversion factors in relation to GT and LWTa

From: Assessing the cost competitiveness of China's shipbuilding industry

Vessel type Vessel sub-type GT LWT LWT/GT for vessel sub-type b LWT/GT c for vessel type
Tankers (Crude) VLCCd 159 000 35 000 0.22 0.26
  Suezmax 80 000 22 000 0.28  
  Aframax 45–67 000 15–18 000 0.29  
Tankers (Products and Chemical) Panamax 40 000 10–13 000 0.29 0.30
  Handysize 22 000 7000 0.32  
Dry bulk carries Capesize 78–86 000 20–21 000 0.25 0.28
  Panamax 40 000 10–12 000 0.28  
  Handysize 22 000 7000 0.32  
  1. aThe light weight tonnage (LWT) is the actual weight of a ship with no fuel, passengers, cargo, water and so on, on board (Hinkelman, 2010). It is the main unit used by the scrapping industry, as it is relevant to the weight of scrap metal that can be recovered from a dismantled ship (Mikelis, 2007). The LWT shown in Appendix B, Table B1 is measured in long tons. As this calculation is based on an approximation of conversion factors, LWT in long tons is not converted to metric tons (1.016 times of long tons) for the sake of simplicity.
  2. bThe conversion factor for sub-type is calculated by the authors as the value of LWT divided by the value of GT (gross tonnage). Average values are adopted for LWT or GT if the values of LWT or GT are given in the interval.
  3. cThe conversion factor for each vessel type is calculated by the authors as the average value of the conversion factor for sub-types.
  4. dRefers to the double-hull VLCC.
  5. Source: Mikelis, N. (2007) A statistical overview of ship recycling, IMO. www.imo.org/SharePoint/blastDataHelper.asp/data_id%3D23449/shiprecycling.pdf.