Six people were rescued unharmed Saturday afternoon when their boat ran up onto rocks at Fort Sumter, officials said.

The incident happened at about 4 p.m., said Bianca Sancic, spokeswoman for the North Charleston Fire Department.

The state Department of Natural Resources and Charleston police also responded.

Crews on jet skis from Sullivan’s Island attempted to pull the boat off the rocks but were unsuccessful.

Rescue crews were able to tie ropes to the boat and pull it into shore, allowing all six passengers to disembark unharmed, Sancic said.