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Permit vs Romeo

Romeo submarine side profile drawing
🇷🇺 Romeo
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Specifications
Permit Romeo
Origin 🇺🇸 United States 🇷🇺 Ex-USSR
Category Submarine Submarine
Type Nuclear-powered attack submarine Diesel-electric submarine
Manufacturer Portsmouth Naval Shipyard Krasnoye Sormovo Shipyard
Year introduced 1961 1957
Number built 14 units 133 units
Estimated unit price NA NA
Displacement 3,810 tons 1,475 tons
Maximum speed 15.0 knots 15.0 knots
Range Unlimited 9,000 nm at 9 knots
Length 84.9 m 76.6 m
Beam 9.6 m 6.7 m
Crew 112 54
Max depth 400 m NA
Performance Radar Chart
Armament & Systems
Permit Romeo
Armament
  • 4 × 21 inch (533 mm) torpedo tubes amidships
  • 12-18 × Mark 37 torpedoes (later Mark 48s)
  • 4-6 × UUM-44 SUBROC anti-submarine missiles
  • 4 × UGM-84 Harpoon anti-ship missiles
  • 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 1 S5W PWR, 2 steam turbines, 15,000 shp (11 MW), 1 shaft Two diesels delivering 2.94 MW (4000 shp) with two electric motors driving two shafts.

Overview

The Permit and the Romeo are both Submarine classes.

The Permit displaces 3,810 tons — 2.6x the Romeo's 1,475 tons. The Permit reaches 15 knots vs 15 knots for the Romeo. Operational range is 99,999 nautical miles for the Permit vs 9,000 for the Romeo. The Permit carries a crew of 112 vs 54 for the Romeo. Submerged displacement is 4,369 tons for the Permit vs 1,830 tons for the Romeo.

The Permit was produced in 14 units vs 133 for the Romeo. The Permit was commissioned in 1961, 4 years after the Romeo (1957).

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Frequently Asked Questions

Which has greater displacement, the Permit-class or Romeo-class?
The Permit-class has greater displacement at 3,810 tons compared to the Romeo-class's 1,475 tons.
Which is faster, the Permit-class or Romeo-class?
The Romeo-class is faster with a maximum speed of 15 knots compared to the Permit-class's 15 knots.
Which has longer range, the Permit-class or Romeo-class?
The Permit-class is nuclear-powered with unlimited range, while the Romeo-class has a range of 9,000 nautical miles.
Which is longer, the Permit-class or Romeo-class?
The Permit-class is longer at 84.9 meters compared to the Romeo-class's 76.6 meters.
How many crew members do the Permit-class and Romeo-class have?
The Permit-class has a larger crew complement of 112 compared to the Romeo-class's 54 crew members.
Which has been built in greater numbers, the Permit-class or Romeo-class?
The Romeo-class has been built in greater numbers with 133 vessels compared to 14 vessels of the Permit-class.