6" Naval Gun
Manufactured by Sir W. G. Armstrong Whitworth & Co Ltd in the United Kingdom. Designated 6-inch BL Mk XVII in British service.
These guns were also manufactured by Armstrong Whitworth's subsidiary companies including: Stabilimento Armstrong–Pozzuoli, Vickers, Sons & Maxims, and Nihon Seiko Shi (Japanese Steelworks) at Muroran, Japan.
Obsolete by the Pacific War, they were emplaced in shore batteries during the Pacific War to defend strategic positions.