It is proper for me to notice that since my inspection the plan of the boom was found to be defective, at least in one particular; the great length of it made it unable to bear the pressure of the tide, and the boom parted in several places. This, it is hoped by the projector, may be remedied by breaking the continuous character of the barrier and laying it in sections, and on that plan it is now being carried on. . . .
The armament of the four new sand batteries is to consist, as planned, of seven 10 and one 8 inch columbiad, and two 42-pounder rifle guns. Fort Sumter has thirty-eight heavy guns above the caliber of 32-pounders, and Fort Moultrie nine, bearing at once on the obstructions. There will be also two strong ironclad gunboats, each armed with four guns, to give important, indeed vital, assistance. These, I am advised, will be completed before the i5th instant, and could even now yield some aid in an emergency. I regard them as absolutely indispensable to the successful defense of the harbor. The Neck battery on Morris island [afterward Battery Wagner] was next visited, which was found incomplete, wanting at least two weeks work to finish it according to plan, and needing a closed gorge to secure against surprise. It was erected to defend that approach to Fort Sumter. In addition, a few rifled guns ought to be placed to bear on the main channel.
Subsequently I visited a small work, Fort Ripley, now under construction in cribs in the bay, about midway between Fort Johnson and Castle Pinckney. It is nearly ready for its armament of five heavy guns in barbette, but must be protected outside to the high-water mark by rubbish before it can be relied on. A series of similar smaller works erected in the shallow water nearer to the mouth of the harbor would materially add to the strength of our defenses. I did not visit Castle Pinckney, the armament of which is nine 24-pounders and one 24-pounder rifled gun. I am well acquainted with this work, and regard it as nearly worthless at this juncture.
On the 17th of September, accompanied by Major-General Pemberton, I inspected the defensive lines on James island from the Wappoo to Mellichamp s, a distance of about 3 miles. These lines consist of a system of forts, redoubts, redans, cremailleres, not very properly arranged and located, with the exception of Fort Pemberton, on
