Transcript for Woman's Terrifying Fall From Cruise Ship Caught on Tape
Back now at 7:43 with that video of a woman going overboard plugging from a cruise ship. She wasn't rescued for 90 minutes and now she's suing saying the company didn't do enough. Abc's reena ninan has her story. Reporter: This was how sarah kirby intended on celebrating her 30th birthday but after having several drinks she fell overboard fighting for her life. I just prayed to god after and over please don't let me die out here. Reporter: Surveillance video captured a cruise line terror. I remember leaning over the balcony to look at the side of the ship and next thing I knew i was in the water. Reporter: Falling seven decks plugging into the murky sea. While it was caught on infrared footage you might be surprised to learn this. They ma have a closed circuit television camera on the deck, it's not monitored and not connected to an alarm. Reporter: Congress called for it in 2010l work at sea. Watch as I j overboard off this boat. Three, two, one. By the time I hit the water an alarm is sounding. A laser detects my fall and p pinpoints my exact location. Why aren't cruise ships using this? The response has been it's not required. It's not mandated as of yet therefore they are not willing to spend the money at this point. Reporter: Our parent company disney tells "20/20" it has man over technology on all its ships. Even though carnival cruise lines rescued her she decided to sue. Her claims in the suit are completely unsupported and convicted by the evidence in the case. It's this moment that makes it hard for her to return to the seas. Reena ninan, abc news, new york.
This transcript has been automatically generated and may not be 100% accurate.