The document discusses dangerous cargoes carried on offshore supply vessels (OSVs). It questions whether OSV crews have sufficient knowledge to handle these cargoes safely. OSVs carry dangerous and polluting goods packaged in containers and tanks, as well as bulk liquids and dry cargoes. They also transport hazardous waste from offshore installations. However, crews often do not receive enough information about waste contents like whether it is dangerous, flammable, or contains hydrogen sulfide. International and national regulations govern cargo transport, but misunderstandings can occur due to differing rules from organizations like the maritime directorate, petroleum safety authority, labor inspection authority, and climate and pollution agency. The document advocates training to help crews safely