Port and Maritime Security: Potential for Terrorist Nuclear Attack Using Oil Tankers [Updated December 19, 2006] [open pdf - 74KB]
From the Summary: "While much attention has been focused on threats to maritime security posed by cargo container ships, terrorists could also attempt to use oil tankers to stage an attack. If they were able to place an atomic bomb in a tanker and detonate it in a U.S. port, they would cause massive destruction and might halt crude oil shipments worldwide for some time. Detecting a bomb in a tanker would be difficult. Congress may consider various options to address this threat. S. 12, Targeting Terrorists More Effectively Act of 2005, included a Tanker Security Initiative (sec. 325). This report will be updated as needed."
CRS Report for Congress, RS21997