The owners of a sailboat and barge that collided in Biscayne Bay on Monday, killing two young girls and critically injuring two other girls, are working with commercial salvage to draft a plan to have both vessels removed, according to the U.S. Coast Guard.

Two children were killed and two more are in critical condition after a barge struck and sunk their boat, sending them overboard during a sailing camp in Miami on Monday, authorities said.

Preliminary information indicates a “barge struck a sailing vessel carrying six people” near Habicus Island, Florida officials said.