Is that what people call a chain ferry?
no it's steel cable ferry.
In the early 1900s a cable ferry designed by Canadian engineer William Pitt, was installed on the Kennebecasis River near Saint John, New Brunswick in Canada.[1] There are now eight cable ferries along the St John River system in southern New Brunswick.
http://en.wikipedia.org/wiki/Evandale_Ferry (http://en.wikipedia.org/wiki/Evandale_Ferry)
http://www.gnb.ca/0113/ferries/ferries-e.asp (http://www.gnb.ca/0113/ferries/ferries-e.asp)
http://en.wikipedia.org/wiki/Cable_ferry#History (http://en.wikipedia.org/wiki/Cable_ferry#History)