Description
Published:19th ed. (May 14/83)-20th ed. (Feb. 3/90).
Item Description:Depths shown by isolines and soundings.
Relief shown by hachures.
"Soundings in feet."
Includes 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.