# U-23

> 1936 Type IIB submarine

**Wikidata**: [Q689670](https://www.wikidata.org/wiki/Q689670)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/German_submarine_U-23_(1936))  
**Source**: https://4ort.xyz/entity/u-23


## References

1. [Source](https://uboat.net/boats/u23.htm)
2. Czech National Authority Database
3. Virtual International Authority File
4. Freebase Data Dumps. 2013
5. [Source](http://www.ubootarchiv.de/ubootwiki/index.php/Adalbert_Schnee)
6. [Source](http://www.ubootarchiv.de/ubootwiki/index.php/Herbert_Kuppisch)
7. [Source](http://www.ubootarchiv.de/ubootwiki/index.php/Hans-Diedrich_Freiherr_von_Tiesenhausen)
8. [Source](http://www.ubootarchiv.de/ubootwiki/index.php/Rudolf_Arendt)