Credit
CAPT Kate Dollof · Public domain · Resized · Public domain · Source ↗ · Modified
FORCETALLY
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At a glance
Shallow Water Combat Submersiblelarger figure on 0 of 3
Walrus-class submarinelarger figure on 3 of 3
Measured figures
Length
Single source6.8 meters (22 ft)[source]
Length
Single sourceConfiguration
| Specification | Shallow Water Combat Submersible | Walrus-class submarine |
|---|---|---|
| Power | — | 1 shaft (5 blades) 3 x SEMT Pielstick PA4 200 VG diesel engines 6,300 hp (4,700 kW) 1 x HOLEC electric motor 420-cell VARTA batteries[source] |
| Builders | Teledyne Brown Engineering[source] | Rotterdamsche Droogdok Maatschappij[source] |
| Operators | United States Navy Royal Navy (planned)[source] | Royal Netherlands Navy[source] |
| Preceded by | SEAL Delivery Vehicle[source] | Dolfijn class Zwaardvis class |
Counts only measures both sources give with the same scope. A larger figure is not a better system.
67.725 m (222 ft 2.3 in)[source]
at 9 kn (17 km/h; 10 mph)
Single source18,500 km (10,000 nmi) at 9 kn (17 km/h; 10 mph)[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| Cost | $383 million (program cost)[source] | ƒ 500 million per unit (1992)[source] |
|---|
| On order | 7 USN, 3 RN[source] | — |
|---|
| Building | — |
|---|
| Completed |
|---|
| Type | Submersible , diver propulsion vehicle[source] | Diesel-electric attack submarine[source] |
|---|
| Propulsion | Lithium-ion batteries powering electric motors[source] | — |
|---|
| Test depth | >190 feet (58 m)[source] | >300 m (980 ft)[source] |
|---|
| Sensors & processing systems | Inertial navigation system , high-frequency sonar for obstacle/mine avoidance and navigation, GPS[source] | Radars : Signaal / Decca 1229 Signaal ZW-07 Argo Phoenix I Sonar Systems : Thomson Sintra TSM 2272 Eledone Octopus GEC Avionics Type 2026 towed array Thomson Sintra DUUX 5 passive ranging and intercept Fire-control system : HSA GIPSY (SEWACO VIII)[source] |
|---|
| Armament | SEAL team personal weapons, limpet mines[source] | 4 × 21-inch (533 mm) torpedo tubes 20 × Honeywell Mk 48 torpedoes or Honeywell NT 37 C/D/E torpedoes UGM-84 Harpoon SSM 40 mines[source] |
|---|
| Country of origin | United States[source]Inventory Origin column; table 2, row 5, cell 2; revision 1373375989; retrieved 2026-09-30 | — |
|---|
| Name | — | Walrus class[source] |
|---|
| Succeeded by | — | Orka class[source] |
|---|
| Built | — | 1979–1992[source] |
|---|
| In commission | — | 1990–present[source] |
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| Planned | — |
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| Canceled | — |
|---|
| Active | — |
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| Retired | — |
|---|