Description
Published:23rd ed. (May 4/85)-26th ed. (Nov. 16/91).
Item Description:Depths shown by isolines and soundings.
"Soundings in feet."
Includes source diagram and tidal information.
Electronic resource.
Physical Description:online resource (maps) : color
Publication Frequency:Irregular
Format:The .jpg versions of these maps require Adobe Photoshop or Adobe Acrobat 9 Pro to view.