Italian rescuers have resumed their search Saturday for at least 21 people still missing one week after their cruise ship ran aground.

Rescue teams used small explosions to blow new holes in the ship on Saturday morning as they sought new routes into the stricken Costa Concordia cruise liner, which lies wrecked off the Italian island of Giglio.

The rescue operation was suspended earlier Friday after stormy weather caused the Costa Concordia to shift on its rocky ledge off Italy's northwestern coast.

Officials say the partially-submerged 114,000-ton ship has stabilized enough for the search to resume on the upper part of the vessel.

The vessel, which is owned by U.S.-based Carnival Corporation, ran into a rocky reef last Friday, damaging its hull and flipping on its side.

So far 11 people have been reported dead in the accident. Carnival Corporation says it will conduct a comprehensive audit of all ten of its cruise lines to review safety standards and procedures following the Concordia accident.

The world's largest cruise line says it will consult with emergency response experts about the accident.