IMO (International maritime Organization):
http://www.imo.org/Conventions/contents.asp?topic_id=257&doc_id=647#5

IACS ( International association of classification societies):
http://www.iacs.org.uk/publications/CommonRulesDoc.aspx?pageid=4&sectionid=2&linkid=8

Resolution MSC.215(82)
http://www.navcen.uscg.gov/marcomms/imo/msc_resolutions/

GL (Germanischer Lloyd):
http://www.gl-group.com/de/maritime/newbuilding/11491.htm