Dreadnought-class submarine vs Rubis-class submarine

FORCETALLY

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Dreadnought-class submarine — licensed concept illustration

ASubmarines

Dreadnought-class submarine

Nuclear-powered ballistic missile submarine

Concept illustration

Credit

Unknown author Unknown author · OGL 3 · Resized · OGL 3 · Source ↗ · Modified

BSubmarines

Rubis-class submarine

Nuclear-powered attack submarine

First system

Second system

At a glance

Side by side

Length comparisonOne shared metre scale

Dreadnought-class submarineLength

153.6 m

Length source ↗

Rubis-class submarineLength

73.6 m

Length source ↗

Lengths retain their source configuration and measurement scope.

Dreadnought-class submarinelarger figure on 1 of 1

Length+109%

Rubis-class submarinelarger figure on 0 of 1

None

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 30 rows sourced on both sides

154m

73.6m

Length+109%

All recorded figures & sources

153.6 m

Length

Single source

153.6 metres (504 ft)^[source]

73.6 m

Length

Single source

Configuration

Details

Dreadnought-class submarine and Rubis-class submarine configuration
Specification	Dreadnought-class submarine	Rubis-class submarine
Range	Limited only by food and mechanical components^[source]	Unlimited distance; 20–25 years^[source]
Power	—	Pressurised water CAS-48 nuclear reactor (48 MW), LEU 7% 2 propulsion turbo generators (2 x 3,150 kW) 1 electric motor (8,448 shp); 1 shaft 1 auxiliary diesel generator SEMT Pielstick 8PA4V185SM (450 kW)^[source]
Builders	BAE Systems , Barrow-in-Furness , England^[source]	Arsenal de Cherbourg ( DCAN )^[source]
Operators	Royal Navy^[source]	Marine Nationale

Preceded by	Vanguard class^[source]	Daphné class Agosta class^[source]

Cost	£ 31 billion (2016) (equivalent to £ 40.46 billion in 2024) lifetime cost of total programme (est.) £ 7.75 billion (2016) (equivalent to £ 10.12 billion in 2024) per unit (est.)^[source]	—

Built	First expected by early 2030s^[source]	1976–1990^[source]

Planned	4^[source]	8^[source]

Building	4^[source]	—

Active	0^[source]	1^[source]

Type	Nuclear-powered ballistic missile submarine^[source]	Nuclear-powered attack submarine^[source]

Propulsion	Rolls-Royce PWR3 nuclear reactor , turbo-electric drive, pump-jet^[source]	—

Armament	4 × 21 inch (533 mm) torpedo tubes for: Spearfish heavyweight torpedoes 12 × ballistic missile tubes for: Lockheed Trident II D5 SLBMs^[source]	4 × 533 mm (21 in) torpedo tubes 14 of mixed capacity of the following F17 mod2 torpedoes F21 Artemis torpedoes ( Perle after rebuild) Exocet SM39 anti-ship missiles mines^[source]