Unlike land-based installations, a ship is a confined metallic structure. Every cable, antenna, and power line is in close proximity. Without strict EMC controls, a VHF radio could jam a GPS receiver, or a thruster drive could corrupt the autopilot logic. Consequences range from nuisance alarms to total loss of control.
Searching for the "IEC 60533 PDF" is often driven by the need for quick reference during design or troubleshooting. iec 60533 pdf
Provides practical guidance on grounding, shielding, and cable segregation. This clause is often the most consulted by electricians on board. Unlike land-based installations, a ship is a confined