# Soviet submarine K-21

> 1939 K-class submarine

**Wikidata**: [Q4206096](https://www.wikidata.org/wiki/Q4206096)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Soviet_submarine_K-21)  
**Source**: https://4ort.xyz/entity/soviet-submarine-k-21


## References

1. The naval war in the Atlantic (1939-1945)