Neither aircraft or ship, but maybe nonetheless both parts.
The Kiel Canal (in German: Nord-Ostsee-Kanal or NOK),
known as the Kaiser-Wilhelm-Kanal until 1948,
is a 98-kilometre (61 miles) long canal in the german state of Schleswig-Holstein
(the red line shows where in Europe)
The canal links the North Sea at Brunsbüttel to the Baltic Sea at Kiel-Holtenau
of essential importance to the shipping industry where time is money
and saves a lot of time from having to sail north around Denmark.
The canal cuts through the northern german landscape
several bridges crossing along the way including a major highway
and then crosses this old railway bridge the canal in the city of Rendsburg
under the bridge there’s a tiny floating ferry for the local traffic, a real attraction.
(video: Multivan2001, the RoadRunnerTV)