You can download the pdf version of IEC 60533 from the official IEC website or other online repositories that provide access to technical standards.
IEC 60533 is an international standard published by the International Electrotechnical Commission (IEC) that outlines the requirements for the electromagnetic compatibility (EMC) of electrical and electronic equipment used in ships. The standard is titled "Electrical and electronic equipment in ships - Electromagnetic compatibility (EMC)". iec 60533 pdf
