| Deploying nation |  United States |
|---|---|
| Host nation or area |  Australia |
| Region | Indo-Pacific |
| Military branch | 🚢 Naval forces |
| Record type | Troop or force movement |
| Operation or mission | |
| Unit or formation | Not publicly confirmed |
| Personnel | 1 submarine Official announcement |
| Equipment | Not stated |
| Status | Confirmed active |
| Start or report date | Oct 27, 2026 |
| Withdrawal or end date | — |
| Last verified | Oct 27, 2026 |
| Confidence | High: official or multiple independent sources |
Background
Virginia-class attack submarine USS Colorado (SSN 788)Per the U.S. Navy (navy.mil), Colorado arrived at HMAS Stirling on Oct. 27 for a scheduled month-long maintenance period, the fourth U.S. submarine maintenance period in Western Australia under AUKUS. Per the Department of War (war.gov), Colorado will be the first submarine assigned to Submarine Rotational Force-West, beginning in late 2027. Route: Pacific → HMAS Stirling, Western Australia. Status: Arrived for maintenance (official U.S. Navy release).
Deployment timeline
- Record added from The Boston Report Military Deployments Tracker. Source report dated 2026-10-27.
Sources
Related deployments
- Liaoning (16): Philippine Sea (east of Luzon / east of Taiwan), as of early November Confirmed active
- USS Dwight D. Eisenhower (CVN-69): Atlantic Ocean, after leaving Norfolk, Va., Nov. 4 Confirmed active
- Tiger Triumph 2026 military exercise Confirmed active
- USS Boxer (LHD-4): Indian Ocean Confirmed active
- USS Nimitz (CVN-68): Western Atlantic, after leaving Norfolk, Va., Oct. 27 Confirmed active
- USS Theodore Roosevelt (CVN-71): South China Sea (after Keen Sword 27) Confirmed active
- USS George Washington (CVN-73): Arabian Sea Confirmed active
- USS George H.W. Bush (CVN-77): Arabian Sea Confirmed active
Public information only. Locations are given at country or sea-area level. Figures are shown as the source reported them; estimates and claims are labeled. Spot an error? Request a correction.