What document must Vessel Specific Licenses (VSLs) have to carry Noxious Liquid Substances (NLS)?

The correct answer underscores the importance of the International Code for the Safe Carriage of Noxious Liquid Substances in Bulk (NLS Code), which mandates that vessels carrying Noxious Liquid Substances (NLS) must possess a Vessel Specific License (VSL) along with the specific documentation required for compliance. The IPPC-NLS refers to this licensing system tailored for NLS, ensuring that vessels meet international safety and environmental standards for the handling of such substances.

This documentation is crucial because it provides essential information about the vessel's design, safety measures, and operational procedures specific to the transportation of NLS. It ensures that vessels are properly equipped and follow the enforced regulations to prevent pollution and ensure safety at sea.

The other options, while related to maritime operations, do not specifically pertain to the requirements for carrying Noxious Liquid Substances. The IMDG-Code is focused on the safe transport of Dangerous Goods, ISO 9001 pertains to quality management systems, and the IPCC-NLS is not a recognized document in this context. The emphasis is therefore placed on the specific requirements detailed in the IPPC-NLS for vessels operating with Noxious Liquid Substances.