Romeo-class submarine vs Shallow Water Combat Submersible

FORCETALLY

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ASubmarines

Romeo-class submarine

class of Soviet diesel-electric submarine ,

Credit

photograph was taken by the US navy · Public domain · Resized · Public domain · 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

Romeo-class submarineLength

76.6 m

Length source ↗

Shallow Water Combat SubmersibleLength

6.8 m

Length source ↗

Lengths retain their source configuration and measurement scope.

Romeo-class submarinelarger figure on 2 of 2

Length+1026%
Beam+347%

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

13 of 35 rows sourced on both sides

76.6m

6.8m

Length+1026%

All recorded figures & sources

76.6 m

Length

Single source

76.6 m (251 ft 3 in)^[source]

6.8 m

Length

Single source

Configuration

Details

Romeo-class submarine and Shallow Water Combat Submersible configuration
Specification	Romeo-class submarine	Shallow Water Combat Submersible
Power	Two diesels delivering 2.94 MW (4000 shp) with two electric motors driving two shafts.^[source]	—
Builders	Krasnoye Sormovo Shipyard , Gorky Wuchang Shipyard ( Wuhan ) Guangzhou Shipyard ( Canton ) Jiangnan Shipyard ( Shanghai ) Bohai Shipyard ( Huludao ) Mayang-do Naval Shipyard ( North Korea ) - Assembly site of North Korean kits from China .^[source]	Teledyne Brown Engineering^[source]
Operators	Soviet Navy (Historical) People's Liberation Army Navy (Historical) Korean People's Navy Bulgarian Navy (Historical) Syrian Navy (Historical) Egyptian Navy Algerian National Navy (historical)^[source]	United States Navy Royal Navy (planned)^[source]
Preceded by	Whiskey-class submarine

Succeeded by	Foxtrot-class submarine Type 035 submarine^[source]	—

Completed	133^[source]	2^[source]

Retired	109^[source]	—

Preserved	2^[source]	—

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

Electronic warfare & decoys	MRP 11-14^[source]	—

Armament	8 × 533 mm (21 in) torpedo tubes. Six located in the bow and two in the stern. 14 × 533 mm (21 in) anti-ship or anti-submarine torpedoes (including Yu-4 and Yu-1 torpedoes) or 28 mines^[source]	SEAL team personal weapons, limpet mines^[source]

Former operator · Algeria	Algeria^[source]	—

Former operator · Bulgaria	Bulgaria^[source]	—

Former operator · China	China^[source]	—

Former operator · Russia	Russia^[source]	—

Former operator · Syria	Syria^[source]	—

Role	class of Soviet diesel-electric submarine ,^[source]	—

Source measurement	ES5A : Upgraded Type 033, with improvements mainly involving the replacement of equipment of Soviet origin with domestic Chinese systems, which includes: QZHA―10 (Type 779) attack periscope and QDYA―10 (Type 778) general purpose periscope. Addition of H/SQG-2 ranging sonar, Type 063 communication systems, and countermeasure systems. Domestic Chinese Type 801 sonar replaced the original Soviet MARS-24 sonar. The only difference between the Type 801 sonar and the MARS-24 sonar is that there are 24 transducer elements for the Type 801 as opposed to 12 in the original MARS 24, so the Chinese sonar had better accuracy. Domestic Chinese H/SQZ-D reconnaissance sonar (with Type 105 transducers) replaced the original Soviet system, the performance of the SQZ-D is almost identical to the original Soviet sonar it was developed from, except for the sector of scan, which is increased by 15 degrees. Additional noise reduction measures were also adopted. This is the type China originally sold to Egypt in the 1980s.^[source]Romeo-class submarine · Chinese Type 033 Romeo class and its variants; only the objects and conditions stated in this passage Type 033G : Development of the ES5A, with the incorporation of the capability to launch acoustic homing torpedoes ; analog computers installed to achieve automation of, and speeding up of, torpedo fire control calculations that were previously manually calculated. All Chinese Romeos were converted to this standard. The NATO reporting name for this type is rumored to be the Wuhan class .^[source]Romeo-class submarine · Chinese Type 033 Romeo class and its variants; only the objects and conditions stated in this passage Type 033G1 : A single Type 033G was modified to carry 6 YJ-1 (CSS-N-4) anti-ship missiles, this variant is called Type 033G1, with the rumored NATO reporting name of Wuhan A . The missile had to be fired while the boat was surfaced, with a total exposure time on the surface of less than 7 minutes. The most significant improvement, however, is the reduction of noise level by 12 dB.^[source]Romeo-class submarine · Chinese Type 033 Romeo class and its variants; only the objects and conditions stated in this passage ES5B : Development of the Type 033G, primarily intended for export. This is an upgrade package for Romeo submarine users. The primary improvement of this class is the ability to launch wire guided torpedoes and anti-ship missiles (AShM) while submerged. The program originally began in the mid-1980s, and Egypt was reported to be the only customer when China won a contract to upgrade its Romeo-class submarine fleet, including both Soviet built and Chinese built units. This is the last type of Chinese Romeo class submarine; with noise reduction of 20 dB to 140 dB in comparison to the 160 dB of the original Soviet Project 633 submarines acquired by China.^[source]Romeo-class submarine · Chinese Type 033 Romeo class and its variants; only the objects and conditions stated in this passage	—

Source measurement

ES5A : Upgraded Type 033, with improvements mainly involving the replacement of equipment of Soviet origin with domestic Chinese systems, which includes: QZHA―10 (Type 779) attack periscope and QDYA―10 (Type 778) general purpose periscope. Addition of H/SQG-2 ranging sonar, Type 063 communication systems, and countermeasure systems. Domestic Chinese Type 801 sonar replaced the original Soviet MARS-24 sonar. The only difference between the Type 801 sonar and the MARS-24 sonar is that there are 24 transducer elements for the Type 801 as opposed to 12 in the original MARS 24, so the Chinese sonar had better accuracy. Domestic Chinese H/SQZ-D reconnaissance sonar (with Type 105 transducers) replaced the original Soviet system, the performance of the SQZ-D is almost identical to the original Soviet sonar it was developed from, except for the sector of scan, which is increased by 15 degrees. Additional noise reduction measures were also adopted. This is the type China originally sold to Egypt in the 1980s.^[source]Romeo-class submarine · Chinese Type 033 Romeo class and its variants; only the objects and conditions stated in this passage

Type 033G : Development of the ES5A, with the incorporation of the capability to launch acoustic homing torpedoes ; analog computers installed to achieve automation of, and speeding up of, torpedo fire control calculations that were previously manually calculated. All Chinese Romeos were converted to this standard. The NATO reporting name for this type is rumored to be the Wuhan class .^[source]Romeo-class submarine · Chinese Type 033 Romeo class and its variants; only the objects and conditions stated in this passage

Type 033G1 : A single Type 033G was modified to carry 6 YJ-1 (CSS-N-4) anti-ship missiles, this variant is called Type 033G1, with the rumored NATO reporting name of Wuhan A . The missile had to be fired while the boat was surfaced, with a total exposure time on the surface of less than 7 minutes. The most significant improvement, however, is the reduction of noise level by 12 dB.^[source]Romeo-class submarine · Chinese Type 033 Romeo class and its variants; only the objects and conditions stated in this passage

ES5B : Development of the Type 033G, primarily intended for export. This is an upgrade package for Romeo submarine users. The primary improvement of this class is the ability to launch wire guided torpedoes and anti-ship missiles (AShM) while submerged. The program originally began in the mid-1980s, and Egypt was reported to be the only customer when China won a contract to upgrade its Romeo-class submarine fleet, including both Soviet built and Chinese built units. This is the last type of Chinese Romeo class submarine; with noise reduction of 20 dB to 140 dB in comparison to the 160 dB of the original Soviet Project 633 submarines acquired by China.^[source]Romeo-class submarine · Chinese Type 033 Romeo class and its variants; only the objects and conditions stated in this passage

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