The influence of hydrodynamic parameters and cathodic
polarization on the formation of calcareous deposits on a
steel plate in flowing seawater is investigated. Current
density variations on the plate are determined for a
combination of applied potentials and seawater
velocities. Equations are developed to relate the
cathodic current density distribution to variations in
hydrodynamic and diffusional boundary layer thickness
along the plate for laminar and turbulent flow regimes. A
comparison of experimental current densities on a bare
plate to that predicted by theory is examined. Effects of
flow on the formation and properties of calcareous
deposits are discussed in light of recent developments in
marine cathodic protection.