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Delta IV vs Le Triomphant

Delta IV vs Le Triomphant at a glance — displacement 7,800 vs 12,640 tons, length 139 vs 138 m, speed 12 vs 15 knots, crew 120 vs 111.

Delta IV submarine side profile drawing
🇷🇺 Delta IVFull specs
Le Triomphant submarine side profile drawing
🇫🇷 Le TriomphantFull specs
Specifications
Delta IV Le Triomphant
Origin 🇷🇺 Ex-USSR 🇫🇷 France
Category Submarine Submarine
Type Nuclear-powered ballistic missile submarine Nuclear-powered ballistic missile submarine
Manufacturer Komsomolsk-on-Amur DCN
Year introduced 1984 1997
Number built 18 units 4 units
Estimated unit price NA $3,100 million
Displacement 7,800 tons 12,640 tons
Maximum speed 12.0 knots 15.0 knots
Range Unlimited Unlimited
Length 139.0 m 138.0 m
Beam 12.0 m 12.5 m
Crew 120 111
Max depth 400 m 400 m
Performance Radar Chart
Armament & Systems
Delta IV Le Triomphant
Armament
  • D-9 launch tubes for 12 R-29 (SS-N-8 Sawfly) SLBMs
  • 4 × 533 mm (21 in) torpedo tubes
  • 2 × 400 mm (16 in) torpedo tubes
  • 16 M51 (M51.2 / M51.3) submarine-launched ballistic missiles with TNO thermonuclear warheads; M45 on the first three boats until their M51 conversion
  • Four 533 mm (21 in) torpedo tubes for F21 heavyweight torpedoes and Exocet SM39 anti-ship missiles (18 weapons)
Propulsion 2 pressurized water-cooled reactors powering 2 steam turbines driving 2 shafts and each developing 38.7 MW (51,900 shp) K15 PWR (150 MWth), turbines, 30.5 MW to one shaft, pump-jet; 2 Pielstick diesel-alternators
Explore further
Delta IV-class side profile drawing Delta IV-class Specs, operators & history →
Largest operators · in service
Le Triomphant-class side profile drawing Le Triomphant-class Specs, operators & history →
Largest operators · in service
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Frequently Asked Questions

Which has greater displacement, the Delta IV-class or Le Triomphant-class?
The Le Triomphant-class has greater displacement at 12,640 tons compared to the Delta IV-class's 7,800 tons.
Which is faster, the Delta IV-class or Le Triomphant-class?
The Le Triomphant-class is faster with a maximum speed of 15 knots compared to the Delta IV-class's 12 knots.
Which has longer range, the Delta IV-class or Le Triomphant-class?
Both the Delta IV-class and Le Triomphant-class are nuclear-powered and have unlimited range, limited only by food supplies and crew endurance.
Which is longer, the Delta IV-class or Le Triomphant-class?
The Delta IV-class is longer at 139.0 meters compared to the Le Triomphant-class's 138.0 meters.
How many crew members do the Delta IV-class and Le Triomphant-class have?
The Delta IV-class has a larger crew complement of 120 compared to the Le Triomphant-class's 111 crew members.
Which can dive deeper, the Delta IV-class or Le Triomphant-class?
Both the Delta IV-class and Le Triomphant-class have a maximum depth of 400 meters.
Which has been built in greater numbers, the Delta IV-class or Le Triomphant-class?
The Delta IV-class has been built in greater numbers with 18 vessels compared to 4 vessels of the Le Triomphant-class.