Baby docs

[LaurenP]

What documents are required for a six month old baby.  We are going on a family trip and the youngest will the baby.

[mom says]

Depends where you're going and which line you're sailing on.

Edited June 7, 2021 by mom says

[Flatbush Flyer]

10 minutes ago, LaurenP said:

What documents are required for a six month old baby.  We are going on a family trip and the youngest will the baby.

The bigger question is whether a 6 month old is allowed (or advisable).

Some mass market lines will allow someone who is at least six months old onboard under certain circumstances. But even those lines will say no if there are multiple sea days and/or unusual ports - both of which mean unsafe delays in getting the type of medical aid necessary for potential patients who are that young.
And that should tell you something about why what you are contemplating is a really bad idea.

[kitkat343]

Most lines won't let a child under the age of a year sail if there are 3 consecutive days at sea. On Royal Carribean an official copy of the birth certificate would suffice for ID, but you'd need to check with your line or specify it here so we can research that for you.  If you do decide to take a 6 month old, please ensure you have travel insurance that would cover medical costs if there is an emergency.

[Kerry's Girls]

A baby usually needs at a minimum the same documents required of any other passenger, so at least the same as what you have to bring whether that's a certified birth certificate or passport.  Some lines will have further requirements if any parent named on the birth certificate aren't also cruising.