Ordnance Pamphlet 1091 is the official Anti-Aircraft Range Table for the 16-inch/50 caliber gun, issued by the Bureau of Ordnance, U.S. Navy. The document is organized in four parts: Part I presents elements of trajectories, sight angles, and times of flight as functions of slant range and position angle. Part II covers drift and wind deflection corrections. Part III tabulates the effects on horizontal range and altitude from variations in initial velocity, air density, elevation, and wind. Part IV gives corrections to sight angle and time of flight for the same variables. A graphical trajectory sheet is included as an inside back cover plate (page 42A–42B).
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