We found information about the following specific ships:

Japanese gunboat Chōkai

Description: 1887 Maya-class gunboat

Japanese cruiser Chōkai

Description: 1931 Takao-class cruiser

Aliases: Chōkai and Choukai

JS Chōkai

Description: 1996 Kongō-class destroyer

Aliases: Chōkai (DDG-176)

We also found the following citations which are not yet associated with specific ships: