Bofors 57 mm Naval Automatic Gun L/70 vs Type 76 twin 37 mm naval gun

Bofors 57 mm family — Mk 110 aboard USS Freedom — licensed equipment photograph

ANaval guns

Bofors 57 mm Naval Automatic Gun L/70

Naval artillery

Credit

United States Navy, Lt. Ed Early · Public domain · Resized · Public domain · Source ↗ · Modified

Type 76 twin 37 mm naval gun — licensed reference photograph

BNaval guns

Type 76 twin 37 mm naval gun

small caliber naval artillery piece

Credit

United States Navy · Public domain · Resized · Public domain · Source ↗ · Modified

First system

Second system

Measured figures

Head to head

11 of 41 rows sourced on both sides

14t

—

Mass

All recorded figures & sources

6.5 kg

Mark 3 per complete round

Single source

14,000 kg

Mark 3 weight including 1,000 rounds onboard, each weighing

Single source

Mark 3: 14,000 kg (31,000 lb ) (weight including 1,000 rounds onboard, each weighing 6.5 kg (14 lb) per complete round)^[source]

17kmMaximum; HE round at 45°

9.4kmMaximum; Maximum firing range

RangeScopes differ

All recorded figures & sources

8.5 km

Effective; HE round

Single source

17 km

Maximum; HE round at 45°

Single source

8,500 m (9,300 yd) (HE round)^[source]

17,000 m (19,000 yd) (HE round at 45°)^[source]

4.5 km

Effective; Effective firing range

Single source

9.4 km

Maximum; Maximum firing range

Single source

4.35mWith flash hider

—

Barrel length

All recorded figures & sources

3.99 m

Bore length

Single source

4.345 m

With flash hider

Single source

4.045 m

Without flash hider

Single source

Bore length: 3,990 mm (157.09 in) Without flash hider: 4,045 mm (159.25 in) With flash hider: 4,345 mm (171.06 in)^[source]

57mm/70 caliber

37mm

Calibre

All recorded figures & sources

57 mm

/70 caliber

Single source

57 mm/70 caliber^[source]

37 mm

Calibre

Single source

37 mm (1.5 in)^[source]

220rpmMark 2

750–800rounds/min

Rate of fire

All recorded figures & sources

200 rounds/min

Mark 1

Single source

220 rounds/min

Mark 2

Single source

220 rounds/min

Mark 3

Single source

Mark 1: 200 rounds/min Mark 2: 220 rounds/min Mark 3: 220 rounds/min^[source]

750–800 rounds/min

Rate of fire

Single source

750-800 rounds per minute^[source]

1,035m/sHE round

1,000m/s

Muzzle velocity

All recorded figures & sources

1,035 m/s

HE round

Single source

1,035 m/s (3,400 ft/s) (HE round)^[source]

1,000 m/s

Muzzle velocity

Single source

1,000 m/s (3,300 ft/s)^[source]

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

Configuration

Details

Bofors 57 mm Naval Automatic Gun L/70 and Type 76 twin 37 mm naval gun configuration
Specification	Bofors 57 mm Naval Automatic Gun L/70	Type 76 twin 37 mm naval gun
Type	Naval artillery^[source]	—
Place of origin	Sweden^[source]	China^[source]
In service	1971–present^[source]	1976–present^[source]
Used by	See users^[source]	—
Designer	Bofors Defence^[source]	—
Designed	Mark 1: 1970 Mark 2: 1981 Mark 3: 1995^[source]	1970s^[source]
Manufacturer	Bofors Defence (1970–2000) United Defense (2000–2005) BAE Systems AB (2005 onwards)^[source]	—
Produced	Mark 1: 1970 Mark 2: 1985 Mark 3: 2000^[source]	—
Variants	See variants^[source]	—
Shell	57 × 438 mm R (m/70) 6.1 kg (13 lb ) complete round 2.4 kg (5.3 lb ) pre-fragmented shell^[source]	37×252SR^[source]
Barrels	Single barrel (progressive RH parabolic twist, 24 grooves)^[source]	2^[source]
Action	Electronic firing^[source]	—
Elevation	Mark 1: −10°/+78° (40°/s) Mark 2: −10°/+75° (40°/s) Mark 3: −10°/+77° (44°/s)^[source]	-10°/+85°^[source]
Traverse	Full 360°: Mark 1: 55°/s Mark 2: 55°/s Mark 3: 57°/s^[source]	360°^[source]
Feed system	Magazine : Mark 1: 40 ready rounds, 128 rounds in ready racks in mount Mark 2: 120 ready rounds, up to 40 rounds in dual hoists Mark 3: 120 ready rounds, up to 40 rounds in dual hoists, 1,000 rounds in mounting^[source]	—
Sights	Gyro-stabilized in local control.^[source]	—
Role	—	small caliber naval artillery piece^[source]
Reported operators	Reported operator · Bangladesh Reported operator · Croatia Reported operator · Finland Reported operator · Indonesia Reported operator · Ireland Reported operator · Malaysia Reported operator · Montenegro Reported operator · Singapore Reported operator · Sweden Reported operator · Thailand Reported operator · West Germany Reported operator · Canada Reported operator · Brunei Reported operator · Germany Reported operator · Mexico Reported operator · Norway Reported operator · United Kingdom Reported operator · United States	—

FORCETALLY

Loading the evidence…

Preparing your view.

Bofors 57 mm Naval Automatic Gun L/70

Type 76 twin 37 mm naval gun

Type

Naval artillery^[source]

—

Place of origin

Sweden^[source]

China^[source]

In service

1971–present^[source]

1976–present^[source]

Used by

See users^[source]

—

Designer

Bofors Defence^[source]

—

Designed

Mark 1: 1970 Mark 2: 1981 Mark 3: 1995^[source]

1970s^[source]

Manufacturer

Bofors Defence (1970–2000) United Defense (2000–2005) BAE Systems AB (2005 onwards)^[source]

—

Produced

Mark 1: 1970 Mark 2: 1985 Mark 3: 2000^[source]

—

Variants

See variants^[source]

—

Shell

57 × 438 mm R (m/70) 6.1 kg (13 lb ) complete round 2.4 kg (5.3 lb ) pre-fragmented shell^[source]

37×252SR^[source]

Barrels

Single barrel (progressive RH parabolic twist, 24 grooves)^[source]

2^[source]

Action

Electronic firing^[source]

—

Elevation

Mark 1: −10°/+78° (40°/s) Mark 2: −10°/+75° (40°/s) Mark 3: −10°/+77° (44°/s)^[source]

-10°/+85°^[source]

Traverse

Full 360°: Mark 1: 55°/s Mark 2: 55°/s Mark 3: 57°/s^[source]

360°^[source]

Feed system

Magazine : Mark 1: 40 ready rounds, 128 rounds in ready racks in mount Mark 2: 120 ready rounds, up to 40 rounds in dual hoists Mark 3: 120 ready rounds, up to 40 rounds in dual hoists, 1,000 rounds in mounting^[source]

—

Sights

Gyro-stabilized in local control.^[source]

—

Role

—

small caliber naval artillery piece^[source]

Reported operators

Reported operator · Bangladesh
Reported operator · Croatia
Reported operator · Finland
Reported operator · Indonesia
Reported operator · Ireland
Reported operator · Malaysia
Reported operator · Montenegro
Reported operator · Singapore
Reported operator · Sweden
Reported operator · Thailand
Reported operator · West Germany
Reported operator · Canada
Reported operator · Brunei
Reported operator · Germany
Reported operator · Mexico
Reported operator · Norway
Reported operator · United Kingdom
Reported operator · United States

—