http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
United States--Gulf coast, Texas, Houston Ship Channel, Atkinson Island to Alexander Island
Houston Ship Channel, Atkinson Island to Alexander Island
Includes tidal information and table of channel depths.
Numbering realigned 1974 to conform to a new uniform US numbering system for all navigation charts.