Statistics for occurrence #1 of “Fort Pemberton” in chapter 10, page 208 of James Barnes, author of David G. Farragut, Naval Actions of 1812, Yank ee Ships and Yankee Sailors, Commodore Bainbridge , The Blockaders, and other naval and historical works, The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 6: The Navy.:

...ump. The soldiers were grumbling at the constant labor of digging the gunboats out of the woods. The channel was so obstructed and narrow that only one gunboat at a time could effectually engage Fort Pemberton . After a few days of ineffectual bombardment the expedition was abandoned and the gunboats returned to the Mississippi over the same long, difficult course.
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