The marine environment is extremely harsh, with high salinity, humidity, mold, and constant corrosion posing significant threats to electrical connections. Marine and offshore terminal blocks must comply with classification society standards (e.g., DNV-GL, ABS, LR) and be made of corrosion-resistant materials like stainless steel and high-grade engineering plastics. Protection ratings often require IP66/67 or higher to completely prevent seawater ingress. They are used in ship propulsion systems, navigation, communication, automation control, and connections for critical equipment on offshore drilling platforms. Their excellent sealing and corrosion resistance ensure the absolute reliability of electrical systems during long voyages or severe sea conditions, directly impacting personnel and asset safety.