 Andrews determines that the ship will sink within two hours, and it lacks sufficient lifeboat capacity for everyone on board.A distress signal is sent out, and efforts begin to signal the "Californian", visible on the horizon 10 miles away, but its radio operator is off duty and does not hear the distress signal.Fortunately, the radio operator on the receives the distress call and alerts Captain Arthur Rostron, who orders the ship to head to the site.