It depends on how big the ferry is.
Ferry
About 5000 cars can fit into an average car park. If you have lickle cars, you can fit more in, you,Tard!
you can fit a total of 8 cars in the garage
The large cross-Channel ferries can hold 1,059 cars or 180 semi-trucks.
ferry
10
11,846
Ferry
13
No, cars cannot go on the Staten Island Ferry. The ferry is designed to transport passengers and bicycles only. However, there are other ferry services, such as the Staten Island–Bayonne ferry, that allow vehicles. For car transportation to and from Staten Island, drivers typically use the Verrazzano-Narrows Bridge.
I asked a member of staff, and he told me 118 cars can fit on each trip.
A ferry is a ship that carries people and sometimes cars.