Modification
Although the production of the newly built Yu-1 torpedoes has stopped long time ago, production continues in the form of upgrading the existing Yu-1 torpedoes in Chinese inventory, which numbered near 10,000. Yu-1 torpedoes have been modified in various stages, including incorporating ASW capability, so that the torpedo could no longer only be used for ASuW, but instead, can be used for both ASuW and ASW warfare. Another important modification was to incorporate Yu-1 torpedo as part of the CAPTOR mine type mine system. Upgrades with newer electronics had also been done. Incorporating active acoustic homing guidance was another upgrade.
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