Navy comparison: 
Japan vs 
United States
Fleet Profile
| Japan | United States | |
|---|---|---|
| Official name | Japan Maritime Self-Defense Force | United States Navy |
| Total ships | 158 (2026) | 553 (2026) |
| Active ships | 158 | 234 |
| Naval ensign |  |
 |
Ship Categories Radar Comparison
Ships by Category
🇯🇵 Japanas of 2026
🇺🇸 United Statesas of 2026
Overview
United States's 553-ship navy outnumbers Japan's 158 vessels (3.5x advantage). Of these, 158 and 234 are in active service respectively.
The fleet breakdown includes 23 vs 85 submarines, 2 vs 16 aircraft carriers, 42 vs 102 destroyers, 10 vs 3 frigates, 0 vs 33 corvettes, 3 vs 52 amphibious ships, 6 vs 0 patrol boats, 18 vs 4 mine warfare ships (Japan vs United States).
Japan's navy is officially the Japan Maritime Self-Defense Force, while United States's is the United States Navy.
Frequently Asked Questions
Which country has more naval ships, Japan or United States?
United States has a larger navy with 553 ships compared to Japan's 158 ships.
Which navy has more submarines, Japan or United States?
United States operates more submarines with 85 compared to Japan's 23.
Which country has more aircraft carriers, Japan or United States?
United States has 16 aircraft carrier(s) compared to Japan's 2.
Which navy has more destroyers, Japan or United States?
United States operates 102 destroyers compared to Japan's 42.
Which navy has more frigates, Japan or United States?
Japan operates 10 frigates compared to United States's 3.
How do the Japan and United States navies compare in size?
United States's navy is 3.5 times larger than Japan's in terms of total ships (553 vs 158).