Jim Elwell wrote: >The attached page I did not get an attached page.
>Perhaps someone can explain the Gross Tonnage >specification: metric unit is tons, colloquial >unit is cubic yards. I cannot figure that one out. Gross tonnage is enclosed volume. Net tonnage is cargo volume. The calculation is in cubic metres and modified by a factor. The calculation is standardised according to the IMO 1969 convention: http://www.imo.org/Conventions/contents.asp?topic_id=259&doc_id=685 Irish law shows the calculation: http://www.irishstatutebook.ie/ZZSI369Y1984.html Apparently the correct term for these values is 'tonnage' not 'tons'. There are lots of other 'ton' related terms. Do not confuse 'gross tonnage' with the previous term 'gross register tonnage' (which was based on a nominal 100 cubic feet). There are also multiple types of displacement tons which are weight units based on weight of water displaced. Terry __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
