A sailor
People who travel by ship are called Passengers.
A person who sells ship supplies is called a chandler
The first ship was called Ancon, a ship that had been used to deliver concrete during the construction
i think they're called shipwrights
The Figurehead
TV travel personalities like A. Bourdain or A. Zimmern. Cruise ship is the best. I travel a lot
The Doctor and Rory travel in a ship called the TARDIS (Time and Relative Dimension(s) In Space)
stowaway
At the moment it is not possible for a person from Earth to travel to Venus.
Such a person is known as a stevedore.
A figurehead
A person who hides on a ship to avoid paying a fare is called a stow away.