What is the difference between hazardous, dangerous and harmful cargoes?

Hazardous cargoes – It does not have any intensic dangerous properties but has a potential  cause danger to life , property and environment if not stored , handled , secured and transported with proper precautions.

Dangerous cargoes – It has intensic dangerous property through which it can cause danger to life and property.

Harmful cargoes Harmful cargoes means any substance which is introduce the sea which is liable to create hazard to human health , to harm living resources and marine life, to damage amenities or to interfere with other legitimate uses of sea.