|
| Class overview |
|---|
| Name | Riachuelo class |
| Builders | Itaguaí Construções Navais |
| Operators | Brazilian Navy |
| Preceded by | Tupi class |
| Cost |
- US$1 billion per unit (diesel-electric)
- US$3.8 billion per unit (nuclear)
|
| Built | 2010–present |
| In commission | 2022–present |
| Planned | 5 (1 nuclear) |
| Building | 2 |
| Completed | 3 |
| Active | 2 |
| General characteristics |
|---|
| Type | Attack submarine |
| Displacement |
- Diesel-electric: 1,900 t (1,900 long tons)
- Nuclear: 6,000 t (5,900 long tons)
|
| Length |
- Diesel-electric: 70.62 m (231 ft 8 in)
- Nuclear: 100 m (328 ft 1 in)
|
| Beam |
- Diesel-electric: 6.2 m (20 ft 4 in)
- Nuclear: 9.8 m (32 ft 2 in)
|
| Propulsion |
- Diesel-electric:
- 4 × MTU 12V 396 SE84 diesels 1,500 hp (1,119 kW) each
- 1 × Jeumont-Schneider EPM Magtronic electric 3,909 hp (2,915 kW)
- 1 × Shaft
- Exide Hagen batteries
- Nuclear:
- 1 × Pressurized water reactor, 48 MW (64,000 hp), LEU 20%
- 1 × Nuclear turbo-electric engine
- 1 × Shaft
|
| Speed |
- Diesel-electric: 21 knots (39 km/h; 24 mph)
- Nuclear: 25 knots (46 km/h; 29 mph)
|
| Test depth | 400 m (1,300 ft) |
| Complement |
- Diesel-electric: 32
- Nuclear: 100
|
Sensors &
processing systems |
- Naval Group SUBTICS combat management system
- Thales TSM 2233 Eledone hull and flank array passive sonar
- Thales Safare/S-Cube hull active sonar
- Safran Series 20 target identification and classification system
|
Electronic warfare
& decoys | |
| Armament | |
| Notes | Sources: |
The Riachuelo class are a Brazilian class of diesel-electric and nuclear-powered attack submarines developed by the state-owned shipyard Itaguaí Construções Navais, based on the French Scorpène class as part of the Submarine Development Program.
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