It is a question many people ask when they are planning their vacation.
The answer is, it depends. The laws and regulations vary from country to country and also depend on the port of departure and the destinations of the cruise.
In general, if you are a U.S. citizen, you will need a passport if your cruise ship departs from one port and returns to another in another country or in a different U. port. This applies even if the ship never touches land in that other country. If you are traveling on an itinerary that includes multiple ports of call within the same country, then a passport may not be necessary, but it is still recommended to have one just in case there are any unexpected circumstances during your voyage.
If you are taking an international cruise from a foreign port (e.g., from Mexico or Jamaica), then you will need to bring your passport with you for immigration purposes at each port of call as well as for re-entry into your home country.
For those traveling with minors, those under the age of 16 do not require passports when traveling domestically by sea or air within the United States; however, they do need passports when traveling internationally by air or sea (including cruises). For those under 18 years old, additional documentation such as birth certificates may be required.
It is important to note, that even though you may not require a passport for boarding the cruise ship, some countries you visit on your cruise may require that all passengers have valid passports upon arrival at their port.
To make sure that you have all the necessary documents and information needed for boarding and disembarking your cruise ship, it is best to contact both your travel agent and your destination’s consulate prior to departure.
In conclusion, it depends on where your cruise departs from and where it is going as well as if any minors will be travelling with you; however, having a valid passport is always recommended for international cruises just in case unexpected circumstances arise during your voyage.