All 267 passengers and crew were safely rescued hours after their ferry ran aground off South Korea's southwestern coast this week, the Coast Guard said Thursday, with investigators giving weight to errors in navigation as a potential cause of the accident.

The 26,546-ton Queen Jenuvia II carrying 246 passengers and 21 crew members was reported to have run aground at the uninhabited islet of Jok near Jangsan Island off the coast of Sinan County, 366 kilometers south of Seoul, at around 8:17 p.m. Wednesday, according to the Coast Guard. It was en route to the port city of Mokpo after departing from the southern island of Jeju.

Half of the vessel's hull was said to have moved onto Jok Islet. No serious injuries were reported, with 27 people reporting pain due to the shock that they experienced when the vessel ran aground.

All people aboard the ferry were safely moved to a nearby port aboard Coast Guard and other vessels.

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