keep SAFETY ZONES
The Offshore Installations (Safety Zones) (No. 4) Order 1995 establishes mandatory 500-metre safety zones around specified offshore installations in UK waters, measured from coordinates specified in the Schedule. The zones restrict navigation and marine activity to prevent collisions with potentially dangerous oil and gas installations.
While this regulation restricts marine navigation, the dangers of unconstrained access around offshore installations are severe — collision risks could cause catastrophic pollution, explosions, and worker fatalities that would be extremely difficult to remediate after the fact. The fixed 500m radius, while a blunt instrument, reflects established maritime safety practice for excluding vessels from hazardous areas. Freedom of navigation must be weighed against the legitimate safetyExternalities created by industrial structures handling flammable hydrocarbons in remote waters. Without such zones, the external costs of potential accidents would not be borne by installation operators.