page_title: BL 15-inch Mk I naval gun
section_title: Coastal batteries
hierarchical_section_title: BL 15-inch Mk I naval gun / In service employment / Coastal batteries
caption_attribution_description: Caption&#160;: "HMS Hood (British Battlecruiser, 1920-1941). View looking aft, showing her 15" guns, taken while she was on maneuvers off Portland, England, circa 1926. HMS Repulse is next astern. Photo by Underwood &amp; Underwood. The original is dated 8 November 1926."
context_page_description: The BL 15-inch Mark I succeeded the BL 13.5 inch /45 naval gun. It was the first British 15-inch gun design and the most widely used and longest lasting of any British designs, and arguably the most efficient heavy gun ever developed by the Royal Navy. It was deployed on capital ships from 1915 until 1959, and was a key Royal Navy gun in both World Wars.
context_section_description: Two coastal guns ("Clem" and "Jane") were mounted near Wanstone Farm in Kent in the 1940s, and were used extensively for cross-Channel fire throughout the war.
  Five guns were mounted in Singapore at Johore battery and Buona Vista Battery in the 1930s.
caption: 'X' turret (Mk II mount) of HMS Hood, trained forward to port – 1926
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