Credit
Bublegun · CC BY-SA 3.0 · Resized · CC BY-SA 3.0 · Source ↗ · Modified
FORCETALLY
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At a glance
20 mm modèle F2 gunlarger figure on 1 of 1
3-inch/50-caliber gunlarger figure on 0 of 1
Counts only measures both sources give with the same scope. A larger figure is not a better system.
Measured figures
Length
Single source2,600 mm (100 in)[source]
Mark 2
Single sourceConfiguration
| Specification | 20 mm modèle F2 gun | 3-inch/50-caliber gun |
|---|---|---|
| Type | Autocannon[source] | Naval gun[source] |
| Place of origin | France[source] | United States[source] |
| Action | Gas unlocked, delayed blowback[source] | — |
| Elevation | −15° to + 65°[source] | Pedestal Mount : -10° to +15° AA Mount : -10° to +85° |
Mark 21
Single sourceMark 2 : 153.8 inches (3.91 m) Mark 21 : 159.7 inches (4.06 m)[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| In service | — | 1900–1990 (US Navy)[source] |
|---|
| Used by | — | US Navy[source] |
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| Designed | — | Mark 2 : 1898 * Mark 10 : 1915 * Mark 22 : 1944[source] |
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| Produced | — | 1900–1948[source] |
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| Variants | — | Marks 2, 3, 5, 6, 8, 10, 17, 18, 19, 20, 21, and 22[source] |
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| Shell | — | complete round: 24 lb (11 kg); projectile weight: 13 lb (5.9 kg) projectile types: AP , AA (with VT proximity fuze), HE, Illumination[source] |
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| Traverse | — | 360°[source] |
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| Sights | — | Peep-site and Optical telescope[source] |
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