Credit
Indian Navy · CC BY 2.5 in · Resized · CC BY 2.5 in · Source ↗ · Modified
FORCETALLY
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At a glance
Kalvari-class submarine (2015)larger figure on 2 of 2
Shallow Water Combat Submersiblelarger figure on 0 of 2
Counts only measures both sources give with the same scope. A larger figure is not a better system.
Measured figures
Length
Single source67.5 m (221 ft 5 in)[source]
Length
Single sourceConfiguration
| Specification | Kalvari-class submarine (2015) | Shallow Water Combat Submersible |
|---|---|---|
| Name | Kalvari class[source] | — |
| Builders | Mazagon Dock Limited[source] | Teledyne Brown Engineering[source] |
| Operators | Indian Navy[source] | United States Navy Royal Navy (planned)[source] |
| Preceded by | Sindhughosh class Shishumar class[source] | SEAL Delivery Vehicle[source] |
6.8 meters (22 ft)[source]
at 4 kn (7.4 km/h; 4.6 mph) (submerged)
Single sourceat 8 kn (15 km/h; 9.2 mph) (surfaced)
Single source6,500 nmi (12,000 km; 7,500 mi) at 8 kn (15 km/h; 9.2 mph) (surfaced) 550 nmi (1,020 km; 630 mi) at 4 kn (7.4 km/h; 4.6 mph) (submerged)[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| Succeeded by | Project 75I[source] | — |
|---|
| Cost | ₹ 23,652 crore (equivalent to ₹ 340 billion or US$3.5 billion in 2023) for six units ₹ 3,942 crore (equivalent to ₹ 57 billion or US$590 million in 2023) per unit (FY 2016)[source] | $383 million (program cost)[source] |
|---|
| In commission | 2017 – present[source] | — |
|---|
| Planned | — |
|---|
| Completed |
|---|
| Canceled | — |
|---|
| Active | — |
|---|
| Type | Attack submarine[source] | Submersible , diver propulsion vehicle[source] |
|---|
| Propulsion | 4 x MTU 12V 396 SE84 diesel engines 360 x battery cells DRDO PAFC Fuel Cell AIP (expected to be added in Fleet I submarines from September 2025 onwards)[source] | Lithium-ion batteries powering electric motors[source] |
|---|
| Test depth | 350 metres (1,150 ft)[source] | >190 feet (58 m)[source] |
|---|
| Electronic warfare & decoys | C303/S anti-torpedo countermeasure system[source] | — |
|---|
| Armament | 6 × 533 mm (21 in) weapon launching tubes . 18 charges for SUT torpedo or SM39 Exocet AShM OR 30 naval mines[source] | SEAL team personal weapons, limpet mines[source] |
|---|
| Country of origin | India[source] | United States[source]Inventory Origin column; table 2, row 5, cell 2; revision 1373375989; retrieved 2026-09-30 |
|---|
| On order | — | 7 USN, 3 RN[source] |
|---|
| Building | — |
|---|
| Sensors & processing systems | — | Inertial navigation system , high-frequency sonar for obstacle/mine avoidance and navigation, GPS[source] |
|---|