FORCETALLY
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At a glance
Gotland-class submarinelarger figure on 0 of 2
Kalvari-class submarine (2015)larger figure on 2 of 2
Counts only measures both sources give with the same scope. A larger figure is not a better system.
Measured figures
Length
Single source60.4 m (198 ft 2 in)[source]
Length
Single sourceConfiguration
| Specification | Gotland-class submarine | Kalvari-class submarine (2015) |
|---|---|---|
| Builders | Kockums[source] | Mazagon Dock Limited[source] |
| Operators | Swedish Navy[source] | Indian Navy[source] |
| Preceded by | Västergötland class[source] | Sindhughosh class Shishumar class[source] |
| Succeeded by | Blekinge class[source] |
67.5 m (221 ft 5 in)[source]
Submerged
Single sourceSurfaced
Single sourceSurfaced: 1,494 tonnes (1,470 long tons) Submerged: 1,599 tonnes (1,574 long tons)[source]
Submerged
Single sourceSurfaced
Single sourceMaximum; Surfaced
Single sourceMaximum; on AIP
Single sourceMaximum; Submerged on batteries
Single sourceSurfaced: 11 knots (20 km/h) Submerged: 20 knots (37 km/h) on batteries; 5 knots (9.3 km/h) on AIP[source]
Maximum; Surfaced
Single sourceMaximum; Submerged
Single sourceat 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.
Project 75I[source] |
| Built | 1992–1996[source] | — |
|---|
| In commission | 1996–present[source] | 2017 – present[source] |
|---|
| Planned |
|---|
| Completed |
|---|
| Active |
|---|
| Type | Submarine[source] | Attack submarine[source] |
|---|
| Propulsion | 2 × Diesel-electric MTU engines 2 × Kockums v4-275R Stirling AIP units[source] | 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] |
|---|
| Sensors & processing systems | CSU 90-2 integrated sonar sensor suite[source] | — |
|---|
| Armament | 4 × 533 mm (21.0 in) torpedo tubes 2 × 400 mm (15.7 in) torpedo tubes 48 × Externally mounted naval mines[source] | 6 × 533 mm (21 in) weapon launching tubes . 18 charges for SUT torpedo or SM39 Exocet AShM OR 30 naval mines[source] |
|---|
| Country of origin | Sweden[source] | India[source] |
|---|
| Name | — | Kalvari class[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] |
|---|
| Canceled | — |
|---|
| Endurance | — | 50 days[source] |
|---|
| Test depth | — | 350 metres (1,150 ft)[source] |
|---|
| Electronic warfare & decoys | — | C303/S anti-torpedo countermeasure system[source] |
|---|
Surfaced : 1,615 tonnes (1,589 long tons) Submerged : 1,775 tonnes (1,747 long tons)[source]
Surfaced : 11 knots (20 km/h; 13 mph) Submerged : 20 knots (37 km/h; 23 mph)[source]