“If the ship had been built of steel instead of wood, she would have been sunk when she was struck by a spar torpedo off Charleston.
“The explosion took place at the height of the orlop-deck, where the outside planking was twelve inches thick, and where the end of a sixteen-inch beam backed the frames. The side sprung in about six inches at the point of contact with the torpedo, ‘brooming’ the end of the sixteen-inch oak beam, and considerable water came in for a short time. The side of the ship, through the elasticity of the material, came back to its original form in a short time and the leak stopped. A gigantic marine, who was sitting on his chest at that part of the deck near the point of the explosion was thrown upward against the beams above him, breaking his collar-bone, and he was the only person injured on the ship.
“The time involved in the construction of the ‘New Ironsides,’ launching in six months from the laying of the keel, was remarkable in view of the fact that, besides the timber difficulty, nearly all the skilled workmen and ship-wrights here had gone into the navy-yard, and we were compelled to scour the country for men who were mostly indifferent mechanics. A large number of ship-carpenters and other men came from Baltimore and Maine, who had left their homes to avoid conscription or to secure the high rates of wages paid here.
“An interesting incident connected with the building of the ‘New Ironsides’ was the fact that during the first half of her construction the progress in naval ordnance had advanced so rapidly that the authorities concluded to enlarge the caliber of her guns sufficiently to double the power of the original design. The ship was at first planned to carry sixteen 8-inch smooth-bore guns, which was at that time considered the heaviest caliber that could be worked in a broadside mount. Having in view the fact that all war-ships heretofore built, particularly steam-ships, exceeded their calculated draught, I determined to avoid a similar error in this ship. I provided against it in my calculations of displacement by allowing a foot for a margin. The draught was not to exceed fifteen feet; I allowed for fourteen feet. The minimum height of the port-sills above water at load draught, to insure sea-worthiness and ability to fight the guns in sea-way, should have been seven feet, according to our instructions. But in getting up the plans I arranged that the port-sills with the 8-inch battery would be eight feet above water. My calculations having been correctly made, I had a foot to spare.