4 inch/50 Mk.9 (102 mm)

Description

Write an introduction to the article in 2-3 small paragraphs. Briefly tell us about the history of the development and combat using the weaponry and also about its features. Compile a list of air, ground, or naval vehicles that feature this weapon system in the game.

Vehicles equipped with this weapon

• USS Barker
• USS Litchfield

General info

Tell us about the tactical and technical characteristics of the cannon or machine gun.

Available shells

Describe the shells that are available for the cannon and their features and purpose. If it concerns autocannons or machine guns, write about different ammo belts and what is inside (which types of shells).

Penetration Statistics
Ammunition	Type of Warhead	Penetration @ 0° Angle of Attack (mm)
		1000 m	2500 m	5000 m	7500 m	10000 m	15000 m
HC Mk.15	HE	16	16	16	16	16	16
AP Mk.16 SP Common	SAP	100	83	67	57	50	43
HC Mk.15 (with base fuse)	HE	50	39	26	18	16	16

Shell Details
Ammunition	Type of Warhead	Velocity (m/s)	Projectile Mass (kg)	Fuse delay (m)	Fuse sensitivity (mm)	Explosive Mass (TNT equivalent) (g)	Trigger Radius (m)	Arming Distance (m)	Tracer	Normalisation at 30° from horizontal	Ricochet
											0%	50%	100%
HC Mk.15	HE	884	14.92	0.4	0.1	1,210	N/A	N/A	?	?.?°	79°	80°	81°
SP Common	SAP	884	14.97	5.0	5.0	519.4	N/A	N/A	?	?.?°	48°	63°	71°
HC Mk.15 (with base fuse)	HE	884	14.97	3.0	0.1	1,210	N/A	N/A	?	?.?°	79°	80°	81°

Comparison with analogues

Give a comparative description of cannons/machine guns, that have firepower equal to these type of weapons.

Usage in battles

Describe the cannon/machine gun in the game - its distinctive features, tactics of usage against the main opponents. Please don't write a "guide" - do not impose a single point of view, but give the reader food for thought.

Pros and cons

Summarize and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.

Pros:

Cons:

History

Examine the history of the creation and combat usage of this weapon. If the historical reference turns out to be too big, take it to a separate article, taking a link to an article about the vehicle and adding a block "/ History" (example: https://wiki.warthunder.com/(weapon-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref>, as well as adding them at the end of the article.

Media

An excellent addition to the article would be a video guide, as well as screenshots from the game and photos.

See also

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:

• reference to the article about the variant of the cannon/machine gun;
• references to approximate analogues by other nations and research trees.

External links

Paste links to sources and external resources, such as:

• topic on the official game forum;
• encyclopedia page on the weapon;
• other literature.