COZUMEL, Mexico (AP) _ A cruise ship with about 800 passengers aboard remained aground off the Yucatan coast Thursday as the vessel's owners sent for additional tugs to attempt to free it.

The ship, the Panamanian-registered Amerikanis, ran aground Tuesday night when a strong wind drove it about 300 yards from where it had anchored at noon off Playa del Carmen, said Oswaldo Sabido Carvajal, a port authority official.

It came to rest about 200 yards from the ferry dock at Playa del Carmen, 30 miles south of the Caribbean resort of Cancun on the Yucatan peninsula.

Tugs tried unsuccessfully to to free it Wednesday and Thursday, he said.

Tourists were leaving the ship by launches for daily sightseeing on the island of Cozumel, at Mayan ruins in the area and in the resort of Cancun and returning at night, Sabido Carvajal added.

The Miami Herald reported in its Friday editions that the 576-foot ship, operated by the Fantasy Cruise Line, left Miami on Monday with about 800 tourists and a crew of 390.