Y-gun Mk.VII depth charge

Description

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Vehicles equipped with this weapon

Vehicles equipped with this weapon
Motor gun boats	Fairmile B (ML345)
Gunboats	HMS Spey
Sub-chasers	HMCS Brantford
Destroyers	HMS Kelvin · HMAS Nepal
G-class	HMS Grafton · ORP Garland
Hunt-class	HMS Brissenden · HMS Calpe
Tribal-class	HMCS Haida · HMS Eskimo · HMS Mohawk
V-class	HMS Vega · HMS Verdun

General info

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Effective damage

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Comparison with analogues

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Usage in battles

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Pros and cons

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Pros:

Cons:

History

The United States Navy during World War I performed a similar quest for the ideal depth charge delivery system as the Royal Navy. When the British developed the Thornycroft design based on the adaptation of trench mortars it caught the attention of the USN Bureau of Ordnance. The Bureau eventually concluded the Thornycroft projector design was impractical and over-engineered, but they combined the idea with the innovations from their Davis recoil-less rifle to create the Y-gun. The Davis was first designed for use against torpedo boats, but it was later adapted to serve as an early anti-aircraft gun when the field of military aviation emerged.

The Y-gun was the brainchild of Lieutenant Commander A.J. Stone of the Navy Reserve Force and manufactured by General Ordnance Company in Groton, Connecticut, Stone’s former employer. Deliveries began on December 10^th, 1917, two days after the Navy issued its first official order. The Y-gun gets its name from the shape of the weapon. To simultaneously launch two depth charges over the side of a destroyer or sub-chasers, the gun was built in a Y-shape. A 3-inch blank cartridge is used to fire the arbors carrying the depth charges at ranges of 50 to 65 yards. The Navy made the Y-gun standardized equipment during World War I.

The Y-gun wasn’t a perfect solution, however. It could only be mounted on the center-line of the ship taking up precious space on the deck. The Y-gun was also relatively slow to reload. While improved versions of the Y-gun emerged after its original introduction such as the Mark VII, it did not stop the replacement of the design in US service. The Y-gun was replaced during World War II by the simpler K-gun design, which was lighter, simpler, and more flexible than its older brother. However, the Y-gun was used in the Royal Navy during the war. The Y-guns first entered British service through the Destroyers for Bases Agreement in 1941, where the donated American destroyers were equipped with Y-guns. The Royal Navy also got Y-guns on destroyers that were refitted in the United States during the war.

Media

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See also

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• reference to the article about the variant of the weapon;
• references to approximate analogues by other nations and research trees.

External links

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• topic on the official game forum;
• other literature.