Romeo vs Sōryū

The Romeo and the Sōryū are both Submarine classes. Displacement is 1,475 tons for the Romeo vs 2,900 tons for the Sōryū. The Romeo reaches 15 knots vs 13 knots for the Sōryū. Operational range is 9,000 nautical miles for the Romeo vs 6,100 for the Sōryū. The Romeo carries a crew of 54 vs 65 for the Sōryū. Submerged displacement is 1,830 tons for the Romeo vs 4,200 tons for the Sōryū. The Romeo was produced in 133 units vs 12 for the Sōryū. The Romeo was commissioned in 1957, 52 years before the Sōryū (2009).

Ex-USSR diesel-electric submarine, introduced in 1957, with 133 units built.
Profile of Romeo
Origin 🇨🇳 Ex-USSR
Category Submarine
Type Diesel-electric submarine
Manufacturer Krasnoye Sormovo Shipyard
Year introduced 1957
Number built 133 units
Estimated unit price NA
Japanese attack submarine, introduced in 2009, displaces 2,900 tons.
Profile of Sōryū
Origin 🇯🇵 Japan
Category Submarine
Type Attack submarine
Manufacturer Mitsubishi Heavy Industries
Year introduced 2009
Number built 12 units
Estimated unit price $540 million
Displacement 1,475 tons
Maximum speed 15.0 knots
Range 9,000 nm at 9 knots
Length 76.6 m
Beam 6.7 m
Crew 54
Propulsion Two diesels delivering 2.94 MW (4000 shp) with two electric motors driving two shafts.
Armament
  • 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
Displacement 2,900 tons
Maximum speed 13.0 knots
Range 6,100 nm at 6 knots
Length 84.0 m
Beam 9.1 m
Crew 65
Propulsion 1-shaft 2× Kawasaki 12V 25/25 SB-type diesel engines, 4× Kawasaki Kockums V4-275R Stirling engines (3,900 hp surfaced, 8,000 hp submerged)
Armament
  • 6 × HU-606 21 in (533 mm) torpedo tubes
  • Type 89 torpedo
  • Harpoon (missile)
  • Mines

Performance Radar Chart

Frequently Asked Questions

Which has greater displacement, the Romeo-class or Sōryū-class?
The Sōryū-class has greater displacement at 2,900 tons compared to the Romeo-class's 1,475 tons.
Which is faster, the Romeo-class or Sōryū-class?
The Romeo-class is faster with a maximum speed of 15 knots compared to the Sōryū-class's 13 knots.
Which has longer range, the Romeo-class or Sōryū-class?
The Romeo-class has a longer range at 9,000 nautical miles compared to the Sōryū-class's 6,100 nautical miles.
Which is longer, the Romeo-class or Sōryū-class?
The Sōryū-class is longer at 84.0 meters compared to the Romeo-class's 76.6 meters.
How many crew members do the Romeo-class and Sōryū-class have?
The Sōryū-class has a larger crew complement of 65 compared to the Romeo-class's 54 crew members.
Which has been built in greater numbers, the Romeo-class or Sōryū-class?
The Romeo-class has been built in greater numbers with 133 vessels compared to 12 vessels of the Sōryū-class.