Description
Published:21st ed. (Mar. 28/92)-22nd ed. (Apr. 15/95).
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.