Check the voyage information listed under each voyage to find out whether you require a passport. If it is noted that a Passport is required and the voyage starts & finishes in the UK, it does not guarantee that you will visit a foreign port but the option to might be available.

It is your responsibility to check whether you need a visa for any of the countries you may visit including the Channel Islands. Please note that the rules may be different for traveling by sea compared with by air.