Danube River Trip - 2005 - Roeder-Johnson
The wheelhouse collapses COMPLETELY down into the deck, for really low bridges.  Here, you see it about 50% collapsed, with the captain's head sticking out a hatch that exists for this purpose.

The wheelhouse collapses COMPLETELY down into the deck, for really low bridges. Here, you see it about 50% collapsed, with the captain's head sticking out a hatch that exists for this purpose.