The preference for Tillman III accepts 30 knots in exchange for twelve 16-inch guns, compared with Iowa's 33 knots. The quoted armour ranges favor Tillman III in some areas, at 7 to 13 inches against 4 to 12 inches for Iowa. Its barbettes are thinner, at 4 to 12.5 inches against Iowa's 11.6 to 17.3 inches. These figures leave a tradeoff within the protection scheme as well as between speed and armament.
Notable Point · 3:04:26-3:05:23
Tillman III and Iowa trade speed against guns and armour
Tillman III's twelve guns and 30 knots appeal in this comparison, but its barbettes receive less protection than Iowa's.