You booked a zip-line, a snorkeling trip, a catamaran cruise, or a bus tour at the next port, and you got hurt. When you raise it, the cruise line's first response is often the same: the tour was run by an independent operator, so it is not our responsibility. The real answer is usually more complicated, and more favorable to you, than that.
The cruise line usually sold you the tour
If you booked the excursion through the ship, on the cruise line's app, or at the shore-excursion desk on board, the line promoted it, took your money, and earned a share of it. Courts look at that relationship. A company that markets a tour as part of its cruise experience cannot always walk away by calling the operator a stranger.
"Independent operator" does not end the question
Depending on the facts, a cruise line can still face responsibility. It may be liable for negligently selecting an operator with a poor safety record, for representing an unsafe tour as safe, or under an apparent-agency theory where it led you to believe the excursion was its own. Which of these applies turns on the specific facts, the marketing, and the contract.
The ticket tries to limit this too
Cruise contracts usually include language calling excursion operators independent contractors and disclaiming responsibility for them. That language matters, but it is not the last word. Courts do not always enforce these disclaimers the way the cruise line hopes, especially when the line's own conduct points the other way.
Self-booked tours are different
If you arranged a tour entirely on your own, with no involvement from the cruise line, the analysis changes and the law of the country where it happened may come into play. These cases are still worth reviewing, but the path looks different from a tour sold through the ship.
What helps your case
Keep the excursion receipt or ticket, especially anything showing you booked through the cruise line. Save the operator's name, photos of the equipment or location, and the contact details of anyone who witnessed it. As always, get medical care and keep the records.
This article is general information, not legal advice. Responsibility depends on the specific facts. Contact a lawyer about your situation.