Astute-class submarine vs Oyashio-class submarine

Real photograph of HMS Astute (S119), showing the surfaced Astute-class submarine, bow, sail and masts.

ASubmarines

Astute-class submarine

Nuclear-powered attack submarine

Reference photo · Configuration may differ

Credit

Photo: LA(Phot) Paul Halliwell/MOD · OGL v1.0 · Resized · OGL v1.0 · Source ↗ · Modified

Oyashio-class submarine — licensed reference photograph

BSubmarines

Oyashio-class submarine

Attack submarine

Credit

JO2 Ryan C. McGinley, USN · Public domain · Resized · Public domain · Source ↗ · Modified

First system

Second system

At a glance

Side by side

Length comparisonOne shared metre scale

Astute-class submarineLength

97 m

Length source ↗

Oyashio-class submarineLength

81.7 m

Length source ↗

Lengths retain their source configuration and measurement scope.

Astute-class submarinelarger figure on 5 of 5

Length+19%
Beam+27%
Draught+35%
Displacement+117%
Speed+51%

Oyashio-class submarinelarger figure on 0 of 5

None

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

Measured figures

Head to head

20 of 28 rows sourced on both sides

97m

81.7m

Length+19%

All recorded figures & sources

97 m

Length

Single source

97 m

Astute class · Length

Single source

97 m (318 ft 3 in)^[source]

97 metres^[source]Astute class

81.7 m

Length

Single source

81.7 m (268 ft 1 in )^[source]

11.3m

8.9m

Beam+27%

All recorded figures & sources

11.3 m

Beam

Single source

11.3 m (37 ft 1 in)^[source]

8.9 m

Beam

Single source

8.9 m (29 ft 2 in )^[source]

10m

7.4m

Draught+35%

All recorded figures & sources

10 m

Draught

Single source

10 m (32 ft 10 in)^[source]

7.4 m

Draught

Single source

7.4 m (24 ft 3 in )^[source]

7,400–7,800tonnesSubmerged

3,500tSubmerged

Displacement

All recorded figures & sources

7,400–7,800 tonnes

Submerged

Single source

7,000–7,400 tonnes

Surfaced

Single source

7,400 tonnes

Astute class · Displacement

Single source

Surfaced: 7,000 to 7,400 t (6,900 to 7,300 long tons) Submerged: 7,400 to 7,800 t (7,300 to 7,700 long tons)^[source]

7,400 tonnes^[source]Astute class

3,500 tonnes

Submerged

Single source

2,750 tonnes

Surfaced

Single source

98capacity for 109

7010 officers

ComplementScopes differ

All recorded figures & sources

98 people

capacity for 109

Single source

98 (capacity for 109)^[source]

70 people

10 officers

Single source

70 (10 officers)^[source]

56km/hMaximum; Submerged

37km/hMaximum; Submerged

Speed+51%

All recorded figures & sources

56 km/h

Maximum; Submerged

Single source

55.56 km/h

Maximum; Astute class · Speed

Single source

30 knots (56 km/h; 35 mph), submerged^[source]

30 knots^[source]Astute class

37 km/h

Maximum; Submerged

Single source

22 km/h

Maximum; Surfaced

Single source

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

Configuration

Details

Astute-class submarine and Oyashio-class submarine configuration
Specification	Astute-class submarine	Oyashio-class submarine
Range	Unlimited^[source]	—
Power	—	Diesel-electric 2 Kawasaki 12V25S diesel engines 2 Kawasaki alternators 2 Toshiba motors 3,400 hp (2,500 kW) surfaced 7,750 hp (5,780 kW) submerged^[source]
Name	Astute class^[source]	Oyashio (おやしお, Oyashio Current )^[source]
Builders	BAE Systems Submarines , Barrow-in-Furness^[source]	Kawasaki Shipbuilding Corporation Mitsubishi Heavy Industries^[source]
Operators	Royal Navy^[source]	Japan Maritime Self-Defense Force^[source]
Preceded by	Trafalgar class^[source]	Harushio class^[source]
Succeeded by	SSN-AUKUS (First design contract awarded)^[source]	Sōryū class^[source]
Cost	Over £ 1.65 billion per boat (2015 est.)^[source]	—
Built	2001–present^[source]	1994–2008^[source]
In commission	2010–present^[source]	1998–present^[source]
Planned	7^[source]	11^[source]
Building	1^[source]	—
Completed	6^[source]	11^[source]
Active	5^[source]	8 (2 converted to training ships)^[source]
Type	Nuclear-powered attack submarine^[source]	Attack submarine^[source]
Propulsion	1 × Rolls-Royce PWR 2 nuclear reactor MTU 600 kilowatt diesel generators^[source]	—
Endurance	Unlimited in terms of propulsion, air and water, but otherwise typically 90 days, based on the amount of food carried and endurance of the crew^[source]	—
Test depth	Over 300 m (980 ft)^[source]	—
Sensors & processing systems	Thales Sonar 2076 Atlas DESO 25 echosounder 2 × Thales CM010 optronic masts Raytheon Successor IFF^[source]	Sonar : Hughes/Oki ZQQ-6 hull-mounted sonar, flank arrays, 1 towed array Radar : JRC ZPS 6 I-band search radar.^[source]
Armament	6 × 21 in (533 mm) torpedo tubes with stowage for up to 38 weapons: Tomahawk Block IV cruise missiles Spearfish heavyweight torpedoes^[source]	6 × HU-605 21 in (533 mm) torpedo tubes with 20 reloads for: Type 89 torpedoes UGM-84 Harpoon missiles^[source]
Country of origin	United Kingdom^[source]	Japan^[source]
Retired	—	3^[source]

FORCETALLY

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Astute-class submarine

Oyashio-class submarine

Range

Unlimited^[source]

—

Power

—

Diesel-electric 2 Kawasaki 12V25S diesel engines 2 Kawasaki alternators 2 Toshiba motors 3,400 hp (2,500 kW) surfaced 7,750 hp (5,780 kW) submerged^[source]

Name

Astute class^[source]

Oyashio (おやしお, Oyashio Current )^[source]

Builders

BAE Systems Submarines , Barrow-in-Furness^[source]

Kawasaki Shipbuilding Corporation Mitsubishi Heavy Industries^[source]

Operators

Royal Navy^[source]

Japan Maritime Self-Defense Force^[source]

Preceded by

Trafalgar class^[source]

Harushio class^[source]

Succeeded by

SSN-AUKUS (First design contract awarded)^[source]

Sōryū class^[source]

Cost

Over £ 1.65 billion per boat (2015 est.)^[source]

—

Built

2001–present^[source]

1994–2008^[source]

In commission

2010–present^[source]

1998–present^[source]

Planned

7^[source]

11^[source]

Building

1^[source]

—

Completed

6^[source]

11^[source]

Active

5^[source]

8 (2 converted to training ships)^[source]

Type

Nuclear-powered attack submarine^[source]

Attack submarine^[source]

Propulsion

1 × Rolls-Royce PWR 2 nuclear reactor MTU 600 kilowatt diesel generators^[source]

—

Endurance

Unlimited in terms of propulsion, air and water, but otherwise typically 90 days, based on the amount of food carried and endurance of the crew^[source]

—

Test depth

Over 300 m (980 ft)^[source]

—

Sensors & processing systems

Thales Sonar 2076 Atlas DESO 25 echosounder 2 × Thales CM010 optronic masts Raytheon Successor IFF^[source]

Sonar : Hughes/Oki ZQQ-6 hull-mounted sonar, flank arrays, 1 towed array Radar : JRC ZPS 6 I-band search radar.^[source]

Armament

6 × 21 in (533 mm) torpedo tubes with stowage for up to 38 weapons: Tomahawk Block IV cruise missiles Spearfish heavyweight torpedoes^[source]

6 × HU-605 21 in (533 mm) torpedo tubes with 20 reloads for: Type 89 torpedoes UGM-84 Harpoon missiles^[source]

Country of origin

United Kingdom^[source]

Japan^[source]

Retired

—

3^[source]