US 14 Inch Mk I Railway Gun Specifications:
Barrel Length: 75 Feet
Gun Carriage Length: 84 Feet 2 1/2 Inches
Gun Carriage Width: Railway car alone - 9 Feet 5 Inches, Car with side platforms - 14 Feet 4 1/2 Inches
Gun Carriage Height: 13 Feet 2 7/16 Inches
Weight: 535,000lbs
Crew: 39
Shell Weight: 1,400lbs
Shell Length: 56 1/4 Inches
Propellant: 4 bagged charges, 14 inches by 20 inches each, 470lbs total
Muzzle Velocity: 2,800fps
Range: 24 Miles
Entered Service: 1918
Where Built: Baldwin Locomotive Works, Philadelphia, PA
I have to say these photos don't do the 14 Inch Naval Railway Gun justice. It's BIG and very impressive. However the trees have overgrown around the gun and in summer months you can't see the entire gun carriage from any angle. If you want to photograph it well you're best to come in the winter months when the leaves are gone from the trees.