USS Benfold lost power on 24 July, leaving sailors without galley, toilets or air conditioning until it was towed on 28 July.
The incident adds to concerns over deployed crew strain, alongside reports of poor morale aboard the USS Lincoln.
Trump ordered scaled-back US-South Korea exercises as the George Washington strike group heads to relieve the Lincoln in the Middle East.
US Navy destroyer adrift in South China Sea for four days after losing power

