# Grayback-class submarine

> 1957 class of American submarines

**Wikidata**: [Q1544043](https://www.wikidata.org/wiki/Q1544043)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Grayback-class_submarine)  
**Source**: https://4ort.xyz/entity/grayback-class-submarine


## References

1. Freebase Data Dumps. 2013