OTO Melara 76 mm vs Rheinmetall Sea Snake 30 mm

OTO Melara 76 mm — licensed reference photograph

ANaval guns

OTO Melara 76 mm

Naval gun

Credit

Hunini · CC BY-SA 4.0 · Resized · CC BY-SA 4.0 · Source ↗ · Modified

BNaval guns

Rheinmetall Sea Snake 30 mm

close-in weapon system designed by Rheinmetall Air Defence AG for mounting on ships

First system

Second system

At a glance

Side by side

OTO Melara 76 mmlarger figure on 1 of 2

Calibre+154%

Rheinmetall Sea Snake 30 mmlarger figure on 1 of 2

Muzzle velocity+15%

Counts only measures both sources give with the same scope. A larger figure is not a better system.

Measured figures

Head to head

14 of 26 rows sourced on both sides

—

2.89m

Length

All recorded figures & sources

2.89 m

Length

Single source

2.89 m^[source]

—

1.91m

Width

All recorded figures & sources

1.91 m

Width

Single source

1.91 m^[source]

—

1.28m

Height

All recorded figures & sources

1.28 m

Height

Single source

1.28 m^[source]

7.5tEmpty

479kgGun

MassScopes differ

All recorded figures & sources

7,500 kg

Empty

Single source

Empty: 7.5 tonnes (17,000 lb )^[source]

479 kg

Gun

Single source

Gun: 479 kg^[source]

40kmMaximum; HE-PFF

—

Range

All recorded figures & sources

40 km

Maximum; HE-PFF

Single source

16 km

Maximum; HE-PFF SAPOMER

Single source

20 km

Maximum; HE-PFF VULCANO

Single source

HE-PFF 16,000 m SAPOMER 20,000 m VULCANO 40,000 m^[source]

4.72m62 caliber

—

Barrel length

All recorded figures & sources

4.7244 m

62 caliber

Single source

62 caliber: 4,724.4 mm (186.00 in)^[source]

76.2mmCaliber

30mmCaliber

Calibre+154%

All recorded figures & sources

76.2 mm

Caliber

Single source

76.2 mm (3.00 in)^[source]

30 mm

Caliber

Single source

30 mm^[source]

120rpmSuper Rapid

1,100rpmSingle shot Burst (automatic fire)

Rate of fireScopes differ

All recorded figures & sources

85 rounds/min

Compact

Single source

120 rounds/min

Super Rapid

Single source

Compact : 85 rounds/min Super Rapid : 120 rounds/min^[source]

1,100 rounds/min

Single shot Burst (automatic fire)

Single source

Single shot Burst (automatic fire): 1,100 rounds per minute^[source]

915m/s

1,050m/s

Muzzle velocity+15%

All recorded figures & sources

915 m/s

Muzzle velocity

Single source

915 m/s (3,000 ft/s)^[source]

1,050 m/s

Muzzle velocity

Single source

1,050 m/s (3,400 ft/s)^[source]

Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.

Configuration

Details

OTO Melara 76 mm and Rheinmetall Sea Snake 30 mm configuration
Specification	OTO Melara 76 mm	Rheinmetall Sea Snake 30 mm
Crew	remote controlled^[source]	unmanned^[source]
Type	Naval gun^[source]	CIWS^[source]
Place of origin	Italy^[source]	Switzerland^[source]
In service	1964–present^[source]	2025^[source]
Used by	See operators^[source]	Brazilian Navy Swedish Amphibious Corps^[source]
Designer	OTO Melara^[source]	—
Designed	Compact: 1963 Super Rapid: 1985 Strales: 2004^[source]	2021^[source]
Manufacturer	Otobreda: 1963–2001 BHEL Haridwar : 1994–present (under licence) OTO Melara (subsidiary of Finmeccanica): 2001–2015 Leonardo-Finmeccanica : since 2016 Leonardo : since 2017^[source]	Rheinmetall Air Defence^[source]
Produced	Compact: 1964 Super Rapid: 1985 Strales: 2008^[source]	—
Variants	See variants^[source]	—
Shell	76×636mmR shell weight 6.3 kilograms (14 lb ) propellant weight 2.35 kilograms (5.2 lb )^[source]	30×173mm^[source]
Shell weight	12.4 kg (27 lb)^[source]	—
Elevation	−15°/+85° speed: 35°/s (acceleration: 72°/s²)^[source]	-25 / +60 degrees rate: 90 degree/s^[source]
Traverse	360° speed: 60°/s (acceleration: 72°/s²)^[source]	360 degrees rate: 120 degrees per second^[source]
Feed system	Magazine capacity : 80 ready rounds on Compact gun mount^[source]	—
Barrels	—	Singular^[source]
Role	—	close-in weapon system designed by Rheinmetall Air Defence AG for mounting on ships^[source]Exact source equipment subject, not its payload or a supported platform

FORCETALLY

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OTO Melara 76 mm

Rheinmetall Sea Snake 30 mm

Crew

remote controlled^[source]

unmanned^[source]

Type

Naval gun^[source]

CIWS^[source]

Place of origin

Italy^[source]

Switzerland^[source]

In service

1964–present^[source]

2025^[source]

Used by

See operators^[source]

Brazilian Navy Swedish Amphibious Corps^[source]

Designer

OTO Melara^[source]

—

Designed

Compact: 1963 Super Rapid: 1985 Strales: 2004^[source]

2021^[source]

Manufacturer

Otobreda: 1963–2001 BHEL Haridwar : 1994–present (under licence) OTO Melara (subsidiary of Finmeccanica): 2001–2015 Leonardo-Finmeccanica : since 2016 Leonardo : since 2017^[source]

Rheinmetall Air Defence^[source]

Produced

Compact: 1964 Super Rapid: 1985 Strales: 2008^[source]

—

Variants

See variants^[source]

—

Shell

76×636mmR shell weight 6.3 kilograms (14 lb ) propellant weight 2.35 kilograms (5.2 lb )^[source]

30×173mm^[source]

Shell weight

12.4 kg (27 lb)^[source]

—

Elevation

−15°/+85° speed: 35°/s (acceleration: 72°/s²)^[source]

-25 / +60 degrees rate: 90 degree/s^[source]

Traverse

360° speed: 60°/s (acceleration: 72°/s²)^[source]

360 degrees rate: 120 degrees per second^[source]

Feed system

Magazine capacity : 80 ready rounds on Compact gun mount^[source]

—

Barrels

—

Singular^[source]

Role

—

close-in weapon system designed by Rheinmetall Air Defence AG for mounting on ships^[source]Exact source equipment subject, not its payload or a supported platform