_**1. IJN Kawachi – Japanese Battleship**_
- Type: Battleship (Dreadnought)
- Nation: Empire of Japan
- Class: Kawachi-class (lead ship)
- Launched: October 15, 1910
- Commissioned: March 1, 1912
- Sister Ship: IJN Settsu
> 1. Historical Notes:
- IJN Kawachi was Japan’s first dreadnought-type battleship, built following lessons from the Russo-Japanese War.
- Unlike previous semi-dreadnoughts, it carried an all-big-gun armament layout (though with two different 12-inch gun types).
- It never saw combat during World War I.
- On July 12, 1918, Kawachi suffered an internal explosion while docked at Tokuyama Bay and sank, killing over 600 crew members.
- The likely cause was unstable cordite ammunition stored onboard.