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The QF 6-inch 40 calibre naval gun (Quick-Firing) was used by many United Kingdom-built warships around the end of the 19th century and the start of the 20th century.In British service it was known as the QF 6-inch Mk I, II, III guns.
A fire extinguisher will explode with lethal force if placed in a fire. This myth is shown only on the Discovery website. Busted Though fire extinguishers are capable of killing a person if the cylinder is punctured, they will not explode when put in a fire due to a built-in safety feature.
This QF gun was introduced to provide a higher rate of fire than the BL 4 inch Mk VII. It first appeared in 1914 as secondary armament on Arethusa-class cruisers, was soon adapted to a high-angle anti-aircraft role. It was typically used on cruisers and heavier ships, although V and W-class destroyers of 1917 also mounted the gun.
On Feb 8, 2006, Raytheon issued a press release stating that their "Quick Kill System [was] the first active protection system (APS) to destroy a rocket propelled grenade at close range, using a precision launched warhead with a focused blast" during live fire testing done the day before. [6]
A quick-firing or rapid-firing gun is an artillery piece, typically a gun or howitzer, that has several characteristics which taken together mean the weapon can fire at a fast rate. Quick-firing was introduced worldwide in the 1880s and 1890s and had a marked impact on war both on land and at sea.
An empty fire extinguisher which was not replaced for years. Most countries in the world require regular fire extinguisher maintenance by a competent person to operate safely and effectively, as part of fire safety legislation. Lack of maintenance can lead to an extinguisher not discharging when required, or rupturing when pressurized.
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