Gotland-class submarine vs Romeo-class submarine

Whiskey-class submarine^[source]

Blekinge class^[source]

Foxtrot-class submarine Type 035 submarine^[source]

1992–1996^[source]

1996–present^[source]

3^[source]

3^[source]

133^[source]

3^[source]

Submarine^[source]

2 × Diesel-electric MTU engines 2 × Kockums v4-275R Stirling AIP units^[source]

CSU 90-2 integrated sonar sensor suite^[source]

sonar and radar^[source]

4 × 533 mm (21.0 in) torpedo tubes 2 × 400 mm (15.7 in) torpedo tubes 48 × Externally mounted naval mines^[source]

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]

Sweden^[source]

Soviet Union^[source]

109^[source]

2^[source]

MRP 11-14^[source]

Algeria^[source]

Bulgaria^[source]

China^[source]

Russia^[source]

Syria^[source]

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

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

• Reported operator · Egypt
• Reported operator · North Korea