1 RT = 1 tonne or 1 m<sup>3</sup>.<ref>U.S. Department of Transportation Maritime Administration [http://www.marad.dot.gov/publications/glossary/glossary.html]</ref> | 1 RT = 1 tonne or 1 m<sup>3</sup>.<ref>U.S. Department of Transportation Maritime Administration [http://www.marad.dot.gov/publications/glossary/glossary.html]</ref> |