Das Segelschulschiff der deutschen Bundesmarine GORCH FOCK im Nordatlantik südlich von Halifax. ©Bundeswehr/Schönbrodt Aufnahmedatum:21.06.2007.

The wheel wound the chains to pull the tiller left and right. In turn, it moved the rudder below.

Connected, presumably, to the rudder.

Four of the eight huge wheels used to wrestle this huge ship on course. Conditions in a winter Atlantic storm can only be guessed at.