Naval ships and warships in 19th and 20th centuries
Naval ship classes in service (submarine • auxiliary) • Operational zones (Blue-water navy • Brown-water navy • Green-water navy) • Gun placement (Broadside • Central battery • Casemate • Turrets)
S • Single ship of class • C • Converted to ship type • L • Officially classed as light cruisers under Washington Naval Treaty until 1939 refits • I • Incomplete until the end of the war • X • Cancelled