AN-M4 (37 mm)
The 37 mm AN-M4 is an American naval autocannon. It is the naval version of the 37 mm M4 cannon found on the P-39 Airacobra, and the P-63A-5 Kingcobra.
Vehicles equipped with this weapon
Tell us about the tactical and technical characteristics of the cannon or machine gun.
|Ammunition|| Type of
|Penetration @ 0° Angle of Attack (mm)|
|10 m||100 m||500 m||1,000 m||1,500 m||2,000 m|
|Ammunition|| Type of
| Fuse delay
| Fuse sensitivity
| Explosive Mass
(TNT equivalent) (g)
Comparison with analogues
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Usage in battles
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Pros and cons
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A hydraulically recoil operated design created by legendary gunsmith John Moses Browning, the 37 mm gun M4 was first developed for use on aircraft such the P-39 Aircobra and the P-63 Kingcobra. Needing a "barge-buster" weapon for their PT boats, the M4, known as the AN/M4 in naval service, was salvaged from P-39s at Henderson Field on the island of Guadalcanal and mounted on the boats for the Solomon Islands Campaign in 1942. After the success of the M4 in the naval role, the Navy started to standardize these improvised guns, eventually mounting the M9 37 mm gun on PT boats in 1944 which used a more powerful round.
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|USA naval cannons|
|20 mm||20 mm/70 Oerlikon Mk.II · 20 mm/70 Oerlikon Mark V · 20 mm/70 Oerlikon Mark 24|
|25 mm||25 mm/87 Mk.38|
|28 mm||1.1 inch/75 Mk.1|
|40 mm||Bofors L/60 Mark 1 · Bofors L/60 Mark 2 · Bofors L/60 Mark 3|
|76 mm||3 inch/23 Mk.4 · 3-inch/50 Mk.10 · 3-inch/70 Mk.37 · 3-inch Mark 10 · 3 inch Mk.33 · 3-inch Mk.34|
|102 mm||4 inch/50 Mk.9|
|127 mm||5 inch/25 Mk.11 · 5 inch/25 Mk.13 AA · 5 inch/38 Mk.12 · 5-inch/50 Mk.5 · 5 inch/51 Mk.7 · 127 mm/54 Mark 18|
|152 mm||6 inch/47 Mk.16 · 6 inch/53 Mk.12|
|203 mm||8 inch/55 Mark 9 · 8 inch/55 Mark 12 · 8 inch/55 Mark 14 · 8 inch/55 Mark 16|
|305 mm||12-inch/45 Mk.5 · 12 inch/50 Mk.7 · 12 inch/50 Mk.8|
|356 mm||14 inch/45 Mk.8 · 14 inch/45 Mk.12|