Mediterranean Oil Spill Risk: Historical Pattern of Tanker Disasters The aging tanker incident near Mediterranean waters reflects a critical infrastructure vulnerability: over 25% of the world's oil transits through this region annually, yet approximately 40% of vessels operating there are over 20 years old—well above the 15-year average for global commercial fleets. The Prestige (2002) spilled 77,000 tons off Spain's coast, killing marine ecosystems for over a decade; similar incidents in 1976 (Argo Merchant) and 1989 (Exxon Valdez) demonstrated that single-hulled tanker failures can cost $2.7-10 billion in environmental remediation. Why this matters: Mediterranean nations depend on fisheries worth €1.5 billion annually and tourism generating €150+ billion—making aging vessel regulation a direct economic security issue that requires mandatory double-hull retrofitting and stricter age limits.