The BL 7.5-inch gun Mk I was a British 45-calibre, medium-velocity, naval gun which entered service with the Royal Navy in 1905.
== History == This gun was only mounted on Devonshire class cruisers commissioned in 1905, and was quickly superseded by the 50-calibre 7.5-inch Mk II gun.
== See also == List of naval guns
Notes
== References == Friedman, Norman (2011). Naval Weapons of World War One. Barnsley, South Yorkshire, UK: Seaforth. ISBN 978-1-84832-100-7.
External links
Tony DiGiulian, British 7.5"/45 (19 cm) Mark I