To improve navigational safety and to reduce the hazards to navigation resulting from vessel collisions with pipelines in the marine environment, and for other purposes.

Amends the Natural Gas Pipeline Safety Act of 1968 and the Hazardous Liquid Pipeline Safety Act of 1979 to require an inspection, within 18 months of enactment of this Act, of certain offshore pipeline facilities in the Gulf of Mexico and its inlets and a report to the Secretary of Transportation on any such facility which is exposed or a hazard to navigation. Directs the Secretary to...