This technical manual covers the complete mechanical systems of the 16-inch triple gun turrets fitted to Iowa-class and South Dakota-class battleships. It addresses gun assembly and breech mechanism, elevating and training gear (both Northern Pump and Waterbury hydraulic drives), rammer, projectile and powder hoists, sights, range finder stand, hydraulic equipment, and lubrication. Use the color-coded table of contents below or the Table of Contents button (bottom right) to navigate directly to any section. The document is split across three PDF files indicated by color.
File 1 — Chapters I–VII (pp. 1–138)
File 2 — Chapters VIII–XI (pp. 139–256)
File 3 — Chapters XII–XVI & Appendices (pp. 257–401)