Ships other than those issued with a Certificate of Fitness (under the BCH Code) or International Certificate of Fitness (under the IBC Code) carrying cargoes of MARPOL Annex II substances (i. e. noxious liquid substances), e. g. offshore supply vessels carrying brine, oil-based mud and other drilling-related fluids, and product tankers which are not certified in compliance with the IBC or BCH Codes. (An INLSC may be thought of as a certificate of fitness to carry noxious liquid substances for a ship which is not a purpose-built chemical tanker.)
Which ships require an International Noxious Liquid Substances Certificate?
