8 inch was a calibre adopted in the First World War by the British Army. The Marks VI, VII and VIII (6, 7 and 8) were a new design and not related to the stopgap early Marks I-V of 8-inch howitzer, which used shortened and bored-out naval 6-inch (150 mm) gun barrels.

Mk VII were lighter 25-calibres low-powered guns firing a lighter 180-pound projectile used to equip Australian colonial navies and Australian and New Zealand coastal defences in response to expected Russian expansionism in the Pacific (The "Russian scares" of the 1880s).

The BL 8 inch gun Mark VIII [note 1] was the main battery gun used on the Royal Navy's County-class cruisers, [note 2] in compliance with the Washington Naval Treaty of 1922. This treaty allowed ships of not more than 10,000 tons standard displacement and with guns no larger than 8 inches (203 mm) to be excluded from total tonnage limitations ...

2013年3月20日 · This gun was already tested in the experimental SU-14. A gun with identical ballistics, the BL-7 (OBM-43), was developed by the Special Design Bureau # 172. After refinements, the gun was indexed BL-8, and installed in the ISU-152 SPG, designated ISU-152-1. Let's take a closer look at the gun.

VI, VII and VIII were completely different and came from a new design. The Mk. VIII saw action again in World with three batteries being sent to France with the BEF and those that remained were used to defend Britain. Many of these were converted into 7.2in Howitzers.

English: The BL 8 inch Marks I - VII naval gun were various British 8-inch breech-loading naval and coast defence guns of the 1880s. The following 27 files are in this category, out of 27 total.

Used by The British Army on the battlefields of World War I, The BL 8-Inch Howitzer was considered a ''Siege'' weapon. Unlike earlier Siege version, The Mark VI Version was mounted on a heavy wheeled gun carriage. They were produced by The Vickers Company beginning in 1915. Over 700 were delivered. The Howitzer weighed 8-tons.

English: The British BL 8 inch Mk VIII 50-calibres naval gun used on 1920s heavy cruisers. The following 23 files are in this category, out of 23 total.

The BL 8-inch howitzer Mark I through to Mark V (1 to 5) [note 1] were a British improvisation developed early in the First World War to provide heavy artillery. It used shortened and bored-out barrels from various redundant naval 6-inch guns.

The BL 8-inch howitzer Marks VI, VII and VIII (6, 7 and 8) [3] were a series of British artillery siege howitzers on mobile carriages of a new design introduced in World War I. They were designed by Vickers in Britain and produced by all four British artillery manufacturers, but mainly by Armstrong, and one American company.