You have to book a cruise ship for the exact date and time you want to travel, and it might not happen.
The cruise ship industry is growing, and people are travelling longer and longer distances each year.
But it is also getting harder to book because the industry is in the midst of an economic downturn.
The number of cruise ships in operation in the US fell by 1,700 last year, according to the US Bureau of Labor Statistics.
The US Navy and Coast Guard are currently working to bring more ships online to meet demand.
A US Coast Guard spokeswoman said it was too soon to comment on the cruise ship crash.
In addition to the cruise ships, the Coast Guard also is working to shore up a fleet of ships for the Royal Caribbean fleet, a project that was cancelled in 2015.
The Royal Caribbean is one of the biggest cruise ship operators in the world, with more than 200 ships on the high seas, according a Reuters report.
Royal Caribbean is still operating its vessels in the Caribbean, with the Royal Bahamas and St Lucia.
Some of the most popular cruise ships to visit include the Princess Cruises line, the Grand Duchy, the Princess of Wales and the Princess Margaret.