The 9,900-dwt Mu Du Bong (built 1983) had intended to load fertiliser on Tuesday, but got stuck on Monday.
It had arrived from Cuba.
There were no reports of injuries, and the crew was still on board.
Mexican authorities are trying to refloat a grounded North Korean cargoship stranded off Tuxpan.
The 9,900-dwt Mu Du Bong (built 1983) had intended to load fertiliser on Tuesday, but got stuck on Monday.
It had arrived from Cuba.
There were no reports of injuries, and the crew was still on board.