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Navy comparison: Flag of Australia Australia vs Flag of United States United States

United States's 553-ship navy outnumbers Australia's 62 vessels (8.9:1 advantage). Of these, 44 and 233 are in active service respectively.

SEAS (Sea Equipment Aggregate Strength) Index face-off Full ranking →
Naval ensign of Australia AustraliaWorld #14 23.1
SEAS Index / 100

United States leads on 7 of 9 categories

Naval ensign of United States United StatesWorld #1 100.0
  • 0 Aircraft carriersweight ×200 · size, era 11
  • 0 Cruisersweight ×80 · size, era 7
  • 3 Destroyersweight ×50 · size, era 77
  • 6 Submarinesweight ×45 · size, era 64
  • 7 Frigatesweight ×30 · size, era 1
  • 0 Corvettesweight ×15 · size, era 27
  • 3 Amphibiousweight ×12 · size, era 39
  • 2 Mine warfareweight ×5 · size, era 4
  • 20 Patrol boatsweight ×2 · size, era 0
  • 2 Support shipsnot scored 2
  • 1 Other shipsnot scored 1
Australia 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
Australia United States Ratio
Official name Royal Australian Navy United States Navy
Total ships 62 553 🇺🇸 8.9×
Active ships 44 233 🇺🇸 5.3×
On order / planned 15 66 🇺🇸 4.4×
Submarines 6 64 🇺🇸 11×
Principal surface combatants 10 85 🇺🇸 8.5×
Aircraft carriers 0 11 🇺🇸
Amphibious ships 3 39 🇺🇸 13×
Show full breakdown · 4 more rowsHide the 4 extra rows
Corvettes 0 27 🇺🇸
Patrol boats 20 0 🇦🇺
Mine warfare 2 4 🇺🇸 2.0×
Auxiliaries 3 3 —
Backbone classes one per tier held
🇦🇺 AustraliaCollins-class ×6Hobart-class ×3Anzac-class ×7
🇺🇸 United StatesNimitz-class ×10Virginia-class ×26Arleigh Burke-class ×75
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Frequently Asked Questions

Which country has more naval ships, Australia or United States?
United States has a larger navy with 553 ships compared to Australia's 62 ships.
Which navy has more submarines, Australia or United States?
United States operates more submarines with 85 compared to Australia's 6.
Which country has more aircraft carriers, Australia or United States?
United States has 16 aircraft carrier(s) compared to Australia's 0.
Which navy has more destroyers, Australia or United States?
United States operates 102 destroyers compared to Australia's 3.
Which navy has more frigates, Australia or United States?
Australia operates 13 frigates compared to United States's 3.
How do the Australia and United States navies compare in size?
United States's navy is 8.9 times larger than Australia's in terms of total ships (553 vs 62).