Navy comparison:
South Korea vs
United States
United States's 226 warships outnumber South Korea's 112 (2.0:1 advantage). Counting auxiliaries, reserve and non-commissioned hulls, the fleets number 151 and 465.
SEAS (Sea Equipment Aggregate Strength) Index face-off Full ranking →
SEAS Index / 100
United States leads on 6 of 10 categories
South Korea
United States
Bars: weighted contribution to the SEAS Index (hulls × category weight × size, era and propulsion factors, minor vessels capped at 30 % of the combatant points; the air-wing, sustainment, armament and availability multipliers apply on top) · figures: active hulls at each side's latest inventory year · Methodology
Key figures as of 2026
| South Korea | United States | Ratio | |
|---|---|---|---|
| Official name | Republic of Korea Navy | United States Navy | |
| Total ships | 151 | 465 | 🇺🇸 3.1× |
| Active ships | 150 | 230 | 🇺🇸 1.5× |
| On order / planned | 13 | 81 | 🇺🇸 6.2× |
| Submarines | 20 | 64 | 🇺🇸 3.2× |
| Principal surface combatants | 31 | 83 | 🇺🇸 2.7× |
| Aircraft carriers | 0 | 11 | 🇺🇸 |
| Amphibious ships | 9 | 37 | 🇺🇸 4.1× |
Show full breakdown · 5 more rowsHide the 5 extra rows
| Corvettes | 2 | 27 | 🇺🇸 14× |
| Patrol boats | 18 | 0 | 🇰🇷 |
| Mine warfare | 14 | 4 | 🇰🇷 3.5× |
| Coastal boats | 18 | 0 | 🇰🇷 |
| Auxiliaries | 38 | 4 | 🇰🇷 9.5× |
Backbone classes one per tier held
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Frequently Asked Questions
Which country has more naval ships, South Korea or United States?
United States has a larger navy with 226 warships in service compared to South Korea's 112.
Which navy has more submarines, South Korea or United States?
United States operates more submarines with 64 compared to South Korea's 20.
Which country has more aircraft carriers, South Korea or United States?
United States has 11 aircraft carrier(s) compared to South Korea's 0.
Which navy has more destroyers, South Korea or United States?
United States operates 77 destroyers compared to South Korea's 13.
Which navy has more frigates, South Korea or United States?
South Korea operates 18 frigates compared to United States's 0.
How do the South Korea and United States navies compare in size?
United States's navy is 2.0 times larger than South Korea's in terms of total ships (226 vs 112).