# SIAI S.21

> flying boat

**Wikidata**: [Q957233](https://www.wikidata.org/wiki/Q957233)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/SIAI_S.21)  
**Source**: https://4ort.xyz/entity/siai-s-21


## References

1. Freebase Data Dumps. 2013