South Korea on Tuesday marked the 10th anniversary of the country's worst maritime disaster, when hundreds of schoolchildren died after the overloaded Sewol ferry capsized and sank.

The disaster and botched rescue efforts dealt a crushing blow to then-President Park Geun-hye, who was eventually impeached in 2017, and the tragedy remains divisive and politically sensitive in South Korea even now.

A Coast Guard vessel took some of the victims' families to the site of the sinking early Tuesday for a special ceremony.