Marine cable seal is a flexible, high-security sealing device designed to secure shipping containers, hatches, and valve handles during marine transport. It consists of a galvanized or stainless steel cable loop locked into an adjustable or fixed body, offering strong tensile strength and tamper-evident features. The cable can be routed through multiple locking points, providing versatility for various cargo types. Once applied, any visible damage or irregularity on the seal or cable indicates unauthorized access. Cable seals are commonly used in combination with bolt seals for layered security, and each seal is marked with a unique serial number and barcode for traceability.