Analisa Perbandingan Teknis dan Ekonomis 3 (Tiga) Jenis Anode Tumbal Dalam Pencegahan Korosi Pada Lambung Kapal
Corrosion is the most common problem, including in ship industry, because the sea is an area that has very
high corrosivity, therefore to avoid damage and losses due to corrosion, corrosion protection is needed on the plate.
One of the corrosion protection methods used is cathodic protection using the SACP (Sacrificial Anode Cathodic
Protection) method. This research discusses the selection of 3 types of good anodes to be recommended to the company
based on technical aspects, namely the rate of corrosion by conducting electrochemical testing and economic aspects,
namely the need and cost and calculating the remaining life value of the plates. From the research results, the lowest
corrosion rate was obtained from aluminum anode which was 0.085 mm / year, while for the highest corrosion rate
value was obtained from magnesium anode which was 1.92 mm / year. The total requirement for zinc anode is 25
pieces at a cost of Rp. 7,000,000, for the type of aluminum with a total of 8 pieces at a cost of Rp. 2,240,000 and for
magnesium requires 35 pieces at a cost of Rp. 7,000,000. For the highest remaining life is obtained from aluminum
anode, namely 2.4 years, while the low remaining life aling value is obtained from zinc anode, namely 0.15 years.