To protect electronics from the environment: 1) conformal coat the PCB (printed circuit board) ... 2) coat the PCB with car paint to help prevent "tin whiskers" ... 3) encapsulate the entire electronic assembly in a potting material.

This leaves the primary weaknesses of "power" and "communication". Copper connectors can corrode with salt water. The optimum solution would be to have wireless "power" and wireless "communication".

For more details about electronics => Electronics (dot) FoxPing (dot) com/.

Seaport electrical systems include high-voltage substations for power distribution, shore power for reduced emissions, electric handling equipment like cranes and automated guided vehicles (AGVs), hybrid cranes (like RTGs and STS cranes) to reduce emissions and fuel costs, energy-efficient lighting, renewable energy sources (solar, wind, tidal), battery storage to manage peak demand, and backup systems with UPS and smart grids for resilience and operational continuity.

References in the Field

• Institute of Electrical and Electronics Engineers (IEEE) publishes papers and standards related to port electrification.
• International Association of Ports and Harbors (IAPH) provides guidelines on sustainable port management, including electrification.
• Port Infrastructure Development Program (PIDP) reports from U.S. Department of Transportation provide insights into recent electrical systems enhancements in American ports.
• Ports of the Future Conference proceedings often discuss innovations in seaport electrical systems, including renewable energy integration and automation.
• IEC (International Electrotechnical Commission): Provides international standards for shore power connections, renewable energy integration, and energy management systems in ports.
• IAPH Environmental Ship Index (ESI): Offers guidelines on emissions reduction and energy management, focusing on sustainable practices.
• Research Papers on Port Electrification: Journals such as IEEE Xplore and Transportation Research: studies on port energy management, renewable integration, and automated systems for seaports.
• Port-Specific Case Studies: Many ports, including the Port of Los Angeles, Port of Rotterdam, and Port of Singapore, have published case studies on their electrification and energy management projects.

Conny K. Wachjoe adds good points. One item that can help protect electromagnetic interference, besides metal housing, is bifilar inductors.

Bifilar inductors filter unwanted electronic noise from entering / exiting the electronic assembly. In addition, bifilar inductors allow bidirectional communication when the current in equals the current out. This is unique.

See Electronics (dot) FoxPing (dot) com/ => 6.3 Electronic EMC Common Mode Chokes.