New aircraft carrier en route to Middle East after issues reported aboard USS Abraham Lincoln

Konstantin Toropin, Associated Press Konstantin Toropin, Associated Press

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WASHINGTON (AP) — The Pacific-based aircraft carrier USS George Washington has begun heading toward the Middle East as reports have emerged of mental health and supply issues aboard the long-deployed USS Abraham Lincoln.

The Lincoln has been supporting the U.S. war against Iran, and its deployment has included a record-setting uninterrupted time at sea of more than 240 days. Several Democratic lawmakers are pressing for accountability from the Pentagon over conditions aboard the carrier, which Defense Secretary Pete Hegseth on Thursday said were "completely misrepresented."

WATCH: Trump says USS Lincoln's deployment was 'not nearly long enough'

Extended deployments of carriers during the Iran conflict have raised concerns about the impact on service members who are away from home for long periods as well as the increasing strain on the ship and its equipment. While renewed hostilities between the U.S. and Iran have calmed in recent weeks, the Navy has reimposed a blockade on Iranian ports in the crucial Strait of Hormuz, and the Trump administration has offered no clarity on how it intends to wind down the war.

Hegseth told reporters that the U.S. can maintain the blockade "indefinitely."

The USS George Washington left port in Da Nang, Vietnam, last week, a Navy statement said. The carrier, along with a cruiser and a destroyer, have since been spotted crossing the Singapore Strait.

A Navy official, who spoke on the condition of anonymity to detail sensitive ship details, confirmed that the Washington was in the Strait of Malacca, which links the Pacific and Indian oceans and puts the carrier on a course to head into the Indian Ocean. The Wall Street Journal reported earlier that the Washington would replace the Lincoln as one of the two aircraft carriers now stationed in the Middle East.

The move would leave the waters of the Pacific without a U.S. carrier presence for an unknown period of time. The Trump administration sees China, the dominant power in the region, as "a settled force" that only needs to be deterred from dominating the U.S. or its allies and not the top global adversary that it was under the Biden administration.

The Lincoln originally deployed Nov. 21 from San Diego, and it arrived in the Middle East in January, ahead of the launch of the Iran war on Feb. 28.