Before revision: upright=3.5|center|Schematic view of the chain system on a Bavarian chain boat: Boom (green), rudder (pink), guide rollers (blue), chain drive ( red ) Control and navigation upright=1.5|Front view of a chain boat with its boom In chain boat navigation the chain was simply laid "loose" on the riverbed for long distances of up to several hundred kilometres.
After revision: upright=3.5|center|Schematic view of the chain system on a Bavarian chain boat: Boom (green), rudder (pink), guide rollers (blue), chain drive ( orange ) Control and navigation upright=1.5|Front view of a chain boat with its boom In chain boat navigation the chain was simply laid "loose" on the riverbed for long distances of up to several hundred kilometres.