T13E1 (75 mm)

Description

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Vehicles equipped with this weapon

• PBJ-1H

General info

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Available ammunition

• Default: AP-T · HEI-T
• Armoured targets: AP-T
• Ground targets: HEI-T

Penetration statistics
Belt	Penetration @ 0° Angle of Attack (mm)
	10 m	100 m	500 m	1,000 m	1,500 m	2,000 m
Default	104	101	90	78	68	59
Armoured targets	104	101	90	78	68	59
Ground targets	10	10	10	10	10	10

Belt details
Belt	Type of warhead	Velocity (m/s)	Projectile Mass (kg)	Fuse delay (m)	Fuse sensitivity (mm)	Explosive Mass (TNT equivalent) (g)	Ricochet
							0%	50%	100%
Armoured targets	AP-T	618	6.79	1.2	14	63.7	48°	63°	71°
Ground targets	HEI-T	463	6.6	0.4	0.5	666	79°	80°	81°

Comparison with analogues

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Usage in battles

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Pros and cons

Pros:

• HE shells connecting with any aircraft will absolutely shatter it
• AP shells can easily destroy even heavy tanks if the roof armour is hit
• Accurate

Cons:

• Extremely slow rate of fire, which only allows for one or two shots on target per pass
• Default belt alternates between HE and AP shells, which gives mixed results

History

The T13E1 is a variant of the 75 mm gun M3 tank cannon used on the M4 Sherman. To adapt the B-25 Mitchell for the anti-shipping role, the nose was originally modified to carry a 75 mm M4 pack howitzer. However, the Army wanted greater firepower than the M4 so they modified the design to create the T13E1 which was tested on the B-35H and its Navy counterpart the PBJ-1H. The new design had a different breech mechanism and the gun walls were lighter to reduce weight. It was intended to be fired by the navigator. The T13E1 had a muzzle velocity of 2,362 feet per second and it was eventually adopted into service as the 75 mm gun M5. However, it had a low rate of fire of only 4 rounds per strafing run, generated considerable recoil, and was relatively ineffective against ground targets, so the design was sometimes replaced by a field kit that replaced it with two extra .50 calibre M2 Brownings. However, the lighter cannon of the M5 would find its place as the weapon mounted on the M24 Chaffee light tank.

Media

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See also

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

External links

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• other literature.