page_title: 14"/50 caliber railway gun
section_title: Mark I Navy railway mount
hierarchical_section_title: 14"/50 caliber railway gun / Mark I Navy railway mount
caption_attribution_description: Photograph of US 14 inch 50 caliber railway gun on Mark I gun car.
context_page_description: The 14"/50 caliber railway guns were spare US Navy Mk 4 14 inch/50 caliber guns mounted on railway cars and operated by US Navy crews in France in the closing months of World War I.
context_section_description: Upon its entry into the war, the US chose its largest and longest-ranged available naval gun to fill the gap—the 14"/50 caliber Mk 4 gun with a muzzle velocity of 2800 feet per second. The new 16-inch gun would have been preferable, but it was not yet available in numbers; spare 14-inch guns kept for the active fleet were used instead.
  Baldwin Locomotive Works delivered five trains for the United States Navy during April and May 1918. Each train transported and supported a 14"/50 caliber Mk 4 gun mounted on a rail carriage with four 6-wheel bogies.
caption: Mk I gun car of the type that served in France
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