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Delta IV vs Romeo

Delta IV submarine side profile drawing
🇷🇺 Delta IV
Romeo submarine side profile drawing
🇷🇺 Romeo
Change comparison vs
Specifications
Delta IV Romeo
Origin 🇷🇺 Ex-USSR 🇷🇺 Ex-USSR
Category Submarine Submarine
Type Nuclear-powered ballistic missile submarine Diesel-electric submarine
Manufacturer Komsomolsk-on-Amur Krasnoye Sormovo Shipyard
Year introduced 1972 1957
Number built 18 units 133 units
Estimated unit price NA NA
Displacement 7,800 tons 1,475 tons
Maximum speed 12.0 knots 15.0 knots
Range Unlimited 9,000 nm at 9 knots
Length 139.0 m 76.6 m
Beam 12.0 m 6.7 m
Crew 120 54
Max depth 400 m NA
Performance Radar Chart
Armament & Systems
Delta IV Romeo
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
  • 8 × 533 mm (21 in) torpedo tubes (six bow, two stern)
  • 14 × 533 mm (21 in) anti-ship or anti-submarine torpedoes (including Yu-4 and Yu-1)
  • 28 mines
Propulsion 2 pressurized water-cooled reactors powering 2 steam turbines driving 2 shafts and each developing 38.7 MW (51,900 shp) Two diesels delivering 2.94 MW (4000 shp) with two electric motors driving two shafts.

Overview

The Delta IV and the Romeo are both Submarine classes.

The Delta IV displaces 7,800 tons — 5.3x the Romeo's 1,475 tons. The Delta IV reaches 12 knots vs 15 knots for the Romeo. Operational range is 99,999 nautical miles for the Delta IV vs 9,000 for the Romeo. The Delta IV carries a crew of 120 vs 54 for the Romeo. Submerged displacement is 10,000 tons for the Delta IV vs 1,830 tons for the Romeo.

The Delta IV was produced in 18 units vs 133 for the Romeo. The Delta IV was commissioned in 1972, 15 years after the Romeo (1957).

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Frequently Asked Questions

Which has greater displacement, the Delta IV-class or Romeo-class?
The Delta IV-class has greater displacement at 7,800 tons compared to the Romeo-class's 1,475 tons.
Which is faster, the Delta IV-class or Romeo-class?
The Romeo-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 Romeo-class?
The Delta IV-class is nuclear-powered with unlimited range, while the Romeo-class has a range of 9,000 nautical miles.
Which is longer, the Delta IV-class or Romeo-class?
The Delta IV-class is longer at 139.0 meters compared to the Romeo-class's 76.6 meters.
How many crew members do the Delta IV-class and Romeo-class have?
The Delta IV-class has a larger crew complement of 120 compared to the Romeo-class's 54 crew members.
Which has been built in greater numbers, the Delta IV-class or Romeo-class?
The Romeo-class has been built in greater numbers with 133 vessels compared to 18 vessels of the Delta IV-class.