• World War I naval ships by nation (20 C)

A

• World War I ships of Australia (2 C)
• World War I ships of Austria-Hungary (2 C, 1 P)

B

• World War I ships of Belgium (2 C)
• World War I ships of Brazil (1 C)
• World War I ships of Bulgaria (1 C)

C

• World War I ships of Canada (2 C, 2 P)
• World War I ships of Chile (1 C)
• World War I ships of China (1 C)

D

• World War I ships of Denmark (1 C)

F

• World War I ships of France (3 C, 1 P)

G

• World War I ships of Germany (3 C, 1 P)
• World War I ships of Greece (1 C, 1 P)

I

• World War I ships of the Isle of Man (1 C, 1 P)
• World War I ships of Italy (3 C)

J

• World War I ships of Japan (2 C, 1 P)

M

• World War I ships of Montenegro (1 C)

N

• World War I ships of the Netherlands (1 C, 2 P)
• World War I ships of New Zealand (1 C, 3 P)
• World War I ships of Norway (1 C)

P

• World War I ships of Portugal (1 C)

R

• World War I ships of Romania (2 C)

T

• World War I ships of Russia (4 C, 4 P)

U

• World War I ships of the United Kingdom (3 C, 14 P)
• World War I ships of the United States (3 C, 2 P)