Usage patterns
フェリーに乗るto board a ferry
We boarded the ferry at the port.
フェリーで〈場所〉に渡るto cross to a place by ferry
We crossed to the island by ferry.
フェリーが出るthe ferry departs
The next ferry departs at 3 p.m.
フェリーを利用するto use/take the ferry (as a means of transport)
Many tourists take the ferry to get to the island.