A *train ferry* is a ship <https://en.wikipedia.org/wiki/Ship> (ferry <https://en.wikipedia.org/wiki/Ferry>) designed to carry railway vehicles <https://en.wikipedia.org/wiki/Railroad_car>. Typically, one level of the ship is fitted with railway tracks <https://en.wikipedia.org/wiki/Track_(rail_transport)>, and the vessel has a door at the front and/or rear to give access to the wharves. In the United States, train ferries are sometimes referred to as "car ferries", as distinguished from "auto ferries" used to transport automobiles. The wharf <https://en.wikipedia.org/wiki/Wharf> (sometimes called a "slip <https://en.wikipedia.org/wiki/Ferry_slip>") has a ramp, and a linkspan <https://en.wikipedia.org/wiki/Linkspan#Train_ferry> or "apron", balanced by weights, that connects the railway proper to the ship, allowing for the water level to rise and fall with the tides.
While railway vehicles can be and are shipped on the decks or in the holds of ordinary ships, purpose-built train ferries can be quickly loaded and unloaded by roll-on/roll-off <https://en.wikipedia.org/wiki/Roll-on/roll-off>, especially as several vehicles can be loaded or unloaded at once. A train ferry that is a barge <https://en.wikipedia.org/wiki/Barge> is called a car float <https://en.wikipedia.org/wiki/Car_float> or rail barge. Ferry train Provinci Guang Dong -- Pulau Hainan : Penumpangnya tetap ada di dalam kereta api. Kereta apinya ditarik motor dalam beberapa bagian ke raIL yang ada di kapal. Kereta api dan penumpangnya diangkut ferry, dihubungkan ke rai di darat. https://www.travelchinaguide.com/china-trains/yuehai-railway/
