Sea transport of liquid bulk cargoes

International and national rules apply to the sea transport of liquid bulk cargoes. The Human Environment and Transport Inspectorate (ILT) oversees compliance with these rules in the Netherlands.

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National and international rules

Those responsible for tankers, cargoes and terminals must comply with the following rules:

Assessed and unassessed liquid bulk substances

The IBC Code contains construction and equipment requirements for tankers and sets out the standards for assessing liquid bulk cargoes. Tankers may only carry assessed liquid substances in bulk.

  • The rules for sea transport in bulk of assessed liquids are set out in IBC Code chapters 17, 18 and 19.
  • There are some assessed liquids that have not yet been included in the IBC Code. These are listed in MEPC.2/Circ, published by the IMO annually on 1 December.
  • The IMO offers the option of a provisional assessment in a Tripartite Provisional Agreement (TPA). The IMO maintains a list of TPAs. Each year on 1 December, the IMO incorporates these TPAs into the MEPC.2/Circ and then begins a new overview of TPAs.
  • If a substance does not appear in the IBC Code, MEPC.2/Circ or the list of TPAs, the cargo owner must request a TPA in advance. If you are a cargo owner based in the Netherlands, you must apply for the TPA through the ILT.

Role of the ILT in sea transport

The ILT oversees whether sea transport complies with international and national rules. Reporting of deficiencies, irregularities and incidents is mandatory. The ILT can be contacted: