Blekinge-class submarine vs Shallow Water Combat Submersible

FORCETALLY

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AI-generated illustration · Not a photograph — Representative exterior of Blekinge-class submarine

ASubmarines

Blekinge-class submarine

Hunter-killer submarine ( ISR , seabed operations)

AI-generated illustration · Not a photograph

Credit

ForceTally · AI-generated illustration · Not a photograph · AI-generated · OpenAI output terms · Source ↗ · Modified

Shallow Water Combat Submersible — licensed reference photograph

BSubmarines

Shallow Water Combat Submersible

Submersible , diver propulsion vehicle

Credit

CAPT Kate Dollof · Public domain · Resized · Public domain · Source ↗ · Modified

First system

Second system

At a glance

Side by side

Length comparisonOne shared metre scale

Blekinge-class submarineLength

66.1 m

Length source ↗

Shallow Water Combat SubmersibleLength

6.8 m

Length source ↗

Lengths retain their source configuration and measurement scope.

Blekinge-class submarinelarger figure on 2 of 2

Length+872%
Beam+350%

Shallow Water Combat Submersiblelarger figure on 0 of 2

None

Counts only measures both sources give with the same scope. A larger figure is not a better system.

Measured figures

Head to head

18 of 26 rows sourced on both sides

66.1m

6.8m

Length+872%

All recorded figures & sources

66.1 m

Length

Single source

66.1 m (216 ft 10 in)^[source]

6.8 m

Length

Single source

Configuration

Details

Blekinge-class submarine and Shallow Water Combat Submersible configuration
Specification	Blekinge-class submarine	Shallow Water Combat Submersible
Name	Blekinge class^[source]	—
Builders	Saab Kockums (Karlskrona shipyard)^[source]	Teledyne Brown Engineering^[source]
Operators	Future operators: Swedish Navy Polish Navy^[source]	United States Navy Royal Navy (planned)^[source]
Preceded by	Gotland class^[source]	SEAL Delivery Vehicle^[source]

Succeeded by	Projekt A30^[source]	—

Cost	SEK 25 billion (2025) for 2 units SEK 12.5 billion (2025) per unit US$ 1.31 billion (2025) per unit^[source]	$383 million (program cost)^[source]

In service	Planned to enter service in 2031 / 2033^[source]	—

Planned	Sweden : 2 Poland : 3^[source]	—

Building	2^[source]	2^[source]

Completed	0^[source]	2^[source]

Type	Hunter-killer submarine ( ISR , seabed operations)^[source]	Submersible , diver propulsion vehicle^[source]

Decks	2^[source]	—

Propulsion	1 shaft with 1 propeller, driven by: Stirling engines (AIP) : 4 × Kockums MkV V4-275R Diesel engines (diesel-electric) 2 × engines^[source]	Lithium-ion batteries powering electric motors^[source]

Sensors & processing systems	Sonars : Atlas Elektronik (Sweden) Elac Sonar (Poland) Bow sonar Conform flank array sonar HF intercept sonar arrays Kongsberg SA9510S Mine Avoidance and Navigation Sonar EM2040 multibeam echo sounder, side-scan sonar, sub-bottom profiler and hydrographic echo sounders Masts : Periscope (Poland) Sagem Safran Series 30 optronic surveillance mast (Sweden and Poland) Drones (deported sensors): Saab LUUV (Larger uncrewed underwater vehicle)^[source]	Inertial navigation system , high-frequency sonar for obstacle/mine avoidance and navigation, GPS^[source]

Armament	Torpedoes : 4 × 533 mm (21 in) torpedo tubes , with Torped 62 steg 2 , or Torped 63 2 × 400 mm (16 in) torpedo tubes , with: Torped 47 (Saab SLWT) Naval mines (in development) Missiles JSM-SL (in development)^[source]	SEAL team personal weapons, limpet mines^[source]