The Batavier Line was a packet service 
between Rotterdam and London 
from 1830 until the 1960s.

In WWI a spy worked on board.

Here is a paper on some of the history.

The wife of the Batavier Line's owner

founded a museum. 

A painting by C. Verdonck (~1930)

The designer of the above poster

A font was designed based on this Batavier Line poster

The designer of the above poster.

Here is the list of ships.

A story about the Batavier IV
A story about the Batavier V

A long article on the Batavier III (in Dutch, with pictures)

And many more pictures

There is a book (in Dutch) on the Batavier Line

A drawing of the Batavier III

A list of flags

Here is a list of wrecked ships

And finally, get your own Batavier Line commemorative products