http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Weekly report on navigation hazards and changes to navigation aids in coastal areas and harbors, with references to related charts and notices of U.S. and foreign agencies. Some reports include lists of Hydrographic Office publications recently issued, canceled, and revised, and ships assigned signal letter designations by the Commerce Department.
Electronic reproduction. [Bethesda, Md.] : ProQuest, 2014. digital, PDF file. ProQuest U.S. Executive Branch Documents Mode of access: World Wide Web via ProQuest website.