Monthly data, not seasonally adjusted
NOTES: The U.S. Coast Guard identifies vessels not in compliance with international conventions through examinations and boardings. If a vessel is not compliant, appropriate action is taken to eliminate any threat that vessels may pose to U.S. waters, ports, and citizens.
Examples of threats can include: oil leaks, improper repairs to lifeboats, inability to demonstrate proficiency in a fire drill, or failure to maintain document control.
SOURCE: U.S. Department of Homeland Security, U.S. Coast Guard, IMO Reportable Detentions (Washington, DC: Monthly Issues), available at http://homeport.uscg.mil/ and personal communication as of July 2010.