It said the 126m (43ft) long ship was “anchored in a safe location” off the Isle of Wight.
Ship tracking websites show the vessel in the English Channel about four nautical miles from the coast of the Isle of Wight.
The Caesarea Trader – previously named Commodore Goodwill – was reflagged under the UK flag last year and transports freight between the Channel Islands and Portsmouth.
It is has a cargo capacity of 1,250 cubic metres, the equivalent of about 80 trailers.
DFDS said it was “making necessary steps to maintain continuity of freight links to Jersey”.
The ferry served the Channel Islands for nearly 30 years before it was bought by the Danish-based company in 2025.
It was renamed Caesarea Trader in homage to Jersey’s Latin name, Caesarea.