A stevedore loads and unloads ships. In other places they are just called dockers.
Such a person is known as a stevedore.
stevedore
That would be a stevedore, I believe. Or a Longshoreman.
a port is the place where a ship unloads and loads goods.
a ship sinker
A person who sells ship supplies is called a chandler
A Captin Of The Ship
lookout
The Pilot.
A person who hides on a ship to avoid paying a fare is called a stow away.
To reach a person on a ship you can send them a telegram. Or, by using a "ship-to-shore" telephone call -just contact your local operator, and ask! Be CERTAIN to ask HOW MUCH the call will be, so as to avoid embarrassment later.
A passenger? a vehicle user?