Shallow Water Combat Submersible vs Tench-class submarine

FORCETALLY

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Shallow Water Combat Submersible — licensed reference photograph

ASubmarines

Shallow Water Combat Submersible

Submersible , diver propulsion vehicle

Credit

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

Tench-class submarine — licensed reference photograph

BSubmarines

Tench-class submarine

Diesel-electric submarine

Credit

U.S. Navy · Public domain · Resized · Public domain · Source ↗ · Modified

First system

Second system

At a glance

Side by side

Length comparisonOne shared metre scale

Shallow Water Combat SubmersibleLength

6.8 m

Length source ↗

Tench-class submarineLength · source measurement 2

95 m

Length source ↗

Lengths retain their source configuration and measurement scope.

Measured figures

Head to head

15 of 31 rows sourced on both sides

6.8m

95mLength · source measurement 2

Length

All recorded figures & sources

6.8 m

Length

Single source

6.8 meters (22 ft)^[source]

94.996 m

Length · source measurement 1

Single source

Configuration

Details

Shallow Water Combat Submersible and Tench-class submarine configuration
Specification	Shallow Water Combat Submersible	Tench-class submarine
Power	—	4 × diesel engines driving electrical generators ( Fairbanks-Morse or General Motors ( Corsair only)) 2 × 126- cell Sargo batteries 2 × low-speed direct drive electric motors ( Elliott Company , General Electric , or Westinghouse ) two propellers 5,400 shp (4,000 kW) surfaced 2,740 shp (2,040 kW) submerged^[source]
Builders	Teledyne Brown Engineering^[source]	Portsmouth Naval Shipyard Electric Boat Company Boston Navy Yard^[source]
Operators	United States Navy Royal Navy (planned)^[source]	United States Navy Republic of China Navy Turkish Navy Hellenic Navy Peruvian Navy Pakistan Navy Royal Canadian Navy Italian Navy Brazilian Navy Bolivarian Navy of Venezuela^[source]
Preceded by	SEAL Delivery Vehicle

Cost	$383 million (program cost)^[source]	—

On order	7 USN, 3 RN^[source]	—

Building	2^[source]	—

Completed	2^[source]	29^[source]

Type	Submersible , diver propulsion vehicle^[source]	Diesel-electric submarine^[source]

Propulsion	Lithium-ion batteries powering electric motors^[source]	—

Test depth	>190 feet (58 m)^[source]	400 ft (120 m)^[source]

Sensors & processing systems	Inertial navigation system , high-frequency sonar for obstacle/mine avoidance and navigation, GPS^[source]	—

Armament	SEAL team personal weapons, limpet mines^[source]	10 × 21-inch (533 mm) torpedo tubes (6 forward, 4 aft) 28 torpedoes 1 × 5-inch (127 mm) / 25 caliber deck gun Bofors 40 mm and Oerlikon 20 mm cannon^[source]