ClassNK has released Guidelines for Additional Fire-fighting Measures for Container Carrier, which specify requirements for indicating additional fire safety measures on container carriers as a class notation.

With the expansion of logistics and the growth in ship sizes, the characteristics and loading methods of cargo carried by ships have increasingly diversified. To achieve a higher level of safety, efforts are being made to implement additional fire-fighting measures beyond the mandatory requirements of the SOLAS and class rules. In particular, for container carriers engaged in a wide variety of cargo transportation, considerations for the installation of detection and fire-fighting equipment to mitigate fire risks are progressing.