Chinese Docking Mechanism
The Chinese Docking Mechanism is a spacecraft docking mechanism based on the Androgynous Peripheral Attach System (APAS). There have been contradicting reports by the Chinese on its compatibility with APAS. It is used by Shenzhou spacecraft, beginning with Shenzhou 8, to dock to Chinese space stations. It has a circular transfer passage that has a diameter of . The androgynous variant has a mass of 310 kg and the non-androgynous variant has a mass of 200 kg.