German influence on Soviet peroxide torpedoes

How much did captured German submarine technology influence Soviet hydrogen-peroxide torpedoes?

It mattered greatly as a starting point, but many German ideas were soon superseded or abandoned.

Captured German work and scientists showed Soviet engineers that peroxide propulsion was possible and gave them a practical starting point. Some inherited ideas soon proved to be technological dead ends. Even those failures had value because the Soviet program did not need to rediscover them independently. Soviet engineers could discard those paths and develop better solutions of their own. German influence was substantial at the beginning without making the finished Soviet system a copied weapon.