Description
Published:30th ed. (Sept. 22/84)-33rd ed. (Oct. 12/91).
Item Description:Depths shown by isolines and soundings.
"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.