The United States Navy could soon have three nuclear-powered aircraft carriers in the Middle East at the same time, as USS Theodore Roosevelt sails towards the region to reinforce the naval blockade of Iran.

The Theodore Roosevelt Carrier Strike Group arrived at Changi Naval Base in Singapore on 6 November for a port visit, Army Recognition reported. The group left Singapore on 8 November after a three-day visit and crossed the Strait of Malacca into the Indian Ocean, according to ship-tracking data and ship spotters.

Once it arrives, the Roosevelt would join USS George H.W. Bush, which reached the region on 23 April, and USS George Washington, which has been operating there since 19 August. A US official told Axios that the strike group would not enter US Central Command's area of responsibility before mid-November, and the transit is expected to take one to two weeks.

Relief, not necessarily reinforcement

How long three carriers would stay together is unclear. USNI News reported that the Roosevelt is expected to relieve the George Washington, so the three-carrier overlap may last only as long as the handover takes. Marine Insight reported that it is also unclear whether Washington will keep a three-carrier presence in the region for any length of time.

The incoming formation is a substantial one. It includes USS Theodore Roosevelt (CVN-71) with Carrier Air Wing 11 embarked, the Ticonderoga-class guided-missile cruiser USS Chosin (CG-65), and the Arleigh Burke-class destroyers USS Paul Hamilton (DDG-60) and USS Decatur (DDG-73). US Navy photographs show F-35C fighters parked among F/A-18E/F Super Hornets on the carrier's deck. The group left San Diego in late September for what was expected to be a Middle East deployment.

Blockade pressure continues

The carriers are supporting the US naval blockade of Iran, which has been in force since the United States and Israel launched strikes on the country on 28 February. On 8 November, Central Command chief Admiral Brad Cooper announced Task Force Iron Gate, saying it would further constrain Iran's ability to finance terrorism, rebuild weapons factories and replenish its military.

Reporting does not establish that keeping three carriers in the region is a separately announced blockade requirement. What is clear is that the Roosevelt's arrival will, for a time at least, give the United States its largest carrier presence in the region since the war began.