Navy comparison: Japan vs United States
United States's 474-ship navy outnumbers Japan's 154 vessels (3.1x advantage). Of these, 154 and 243 are in active service respectively. The fleet breakdown includes 25 vs 71 submarines, 0 vs 11 aircraft carriers, 46 vs 78 destroyers, 4 vs 1 frigates, 0 vs 33 corvettes, 16 vs 58 amphibious ships, 6 vs 0 patrol boats, 22 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.
Japan Maritime Self-Defense Force 🇯🇵
| Official Name | Japan Maritime Self-Defense Force |
| Total ships | 154 as of 2025 |
| Active ships | 154 as of 2025 |
| Naval Ensign |
|
United States Navy 🇺🇸
| Official Name | United States Navy |
| Total ships | 474 as of 2025 |
| Active ships | 243 as of 2025 |
| Naval Ensign |
|
Japanese ships by category
| Ship category | Total | |
|---|---|---|
| Submarines | 25 | |
| Aircraft carriers | 0 | |
| Destroyers | 46 | |
| Cruisers | 0 | |
| Frigates | 4 | |
| Corvettes | 0 | |
| Coastal boats | 0 | |
| Patrol boats | 6 | |
| Amphibious ships | 16 | |
| Mine Warfare ships | 22 | |
| Cargo ships | 0 | |
| Support ships | 10 | |
| Other ships | 25 | |
United States ships by category
| Ship category | Total | |
|---|---|---|
| Submarines | 71 | |
| Aircraft carriers | 11 | |
| Destroyers | 78 | |
| Cruisers | 18 | |
| Frigates | 1 | |
| Corvettes | 33 | |
| Coastal boats | 0 | |
| Patrol boats | 0 | |
| Amphibious ships | 58 | |
| Mine Warfare ships | 4 | |
| Cargo ships | 83 | |
| Support ships | 81 | |
| Other ships | 36 | |
Ship Categories Radar Comparison
Frequently Asked Questions
Which country has more naval ships, Japan or United States?
United States has a larger navy with 474 ships compared to Japan's 154 ships.
Which navy has more submarines, Japan or United States?
United States operates more submarines with 71 compared to Japan's 25.
Which country has more aircraft carriers, Japan or United States?
United States has 11 aircraft carrier(s) compared to Japan's 0.
Which navy has more destroyers, Japan or United States?
United States operates 78 destroyers compared to Japan's 46.
Which navy has more frigates, Japan or United States?
Japan operates 4 frigates compared to United States's 1.
How do the Japan and United States navies compare in size?
United States's navy is 3.1 times larger than Japan's in terms of total ships (474 vs 154).