# SM U-57

> German Submarine

**Wikidata**: [Q1769943](https://www.wikidata.org/wiki/Q1769943)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/SM_U-57)  
**Source**: https://4ort.xyz/entity/sm-u-57


## References

1. Freebase Data Dumps. 2013