TY JOUR TI On problem of using copper electrodes to maintain protection against corrosion of steel hulls of ships and vessels KW protection of steel hulls of ships and vessels KW corrosion KW monitoring the operation of protection systems KW reference electrodes KW vessel hull potential JO Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies AU Yastrebov, D.. PY 2021 IS PB Astrakhan State Technical University