The command enclosure of the three generations of 039A/B/C conventional submarines, the A type is decent, the B type is more rounded, and the design of the C type directly is the magic piece command enclosure is actually the level of hydrodynamics

The command enclosure of the three generations of 039A/B/C conventional submarines, the A type is decent, the B type is more rounded, and the C type is directly a magic piece

The design of the command enclosure is actually a typical representative of the level of fluid mechanics, and the good or bad design of the enclosure greatly affects the submarine's underwater resistance maneuvering, noise, electronic equipment and so on. The design of the 039A's command enclosure still belongs to the decent kind, but the upper ends of the B-type enclosure have been arced, and the connection between the enclosure and the hull has also been filled with corners, which looks more streamlined. The C type became a major change again, and the entire enclosure was hexagonal, speculating that it had a certain stealth ability when sailing on the surface.

Note that 039A may be based on 039 overhaul, 039/039G is the same generation, and 039A/B/C is another generation of submarines, although the code name is 039. The former has a displacement of 2250 tons, the latter is 3600 tons, and the combat system and weapon system and power system of the latter are better than the former, because the changes are relatively large, so NATO once named the new 039A/B/C series 041.