What I want to know is where exactly my characters are likely to have boarded the vessel. I would have assumed passengers boarded somewhere out towards Docklands, but there is a postcard image of the Eagle (in service 1898-1928) going under Tower Bridge, which suggests there was a Westminster pier. Can anyone with more knowledge confirm? Also, would some of such cross-Channel services have been combined cargo/passenger crossings? My characters are poor and almost without luggage, and would be taking the cheapest possible option.