The Chinese Navy, after conducting a test cycle, said that the Type 039A submarine "broke all Chinese records fleet the duration of being under water and the depth of immersion, yielding only to nuclear submarines. "According to the Navy, the new submarine can not float for two to three weeks, while submarines with traditional diesel engines can spend under water from 10 to 100 hours.
Recall that last year, China at the IDEX 2017 exhibition presented a model of a domestic submarine of the S-26 type with an air-independent propulsion system. The model was equipped with a Stirling engine, as well as a large tank for liquid oxygen. Submarines of the S-26 type are a modification of the diesel-electric submarines Type 039 (Yuan), which are in service with the Chinese Navy since the 1999 of the year. Earlier, the Navy announced plans to equip all diesel-electric Type 039 (Yuan) submarines with an air-independent propulsion system.
According to the developers, the S-26 submarine with an anaerobic installation has a length of 79,5 meters and a displacement of 2660 tons. The submarine is capable of sinking to a depth of 300 meters. Power reserve is 8000 miles at a speed in the 4 node, and the maximum speed of the submarine under water reaches 18 nodes.