# BL 13.5 inch Mk I – IV gun

> British naval artillery

**Wikidata**: [Q4835887](https://www.wikidata.org/wiki/Q4835887)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/BL_13.5-inch_Mk_I_–_IV_naval_gun)  
**Source**: https://4ort.xyz/entity/bl-13-5-inch-mk-i-iv-gun