Analisa Perbandingan Teknis dan Ekonomis 3 (Tiga) Jenis Anode Tumbal  Dalam Pencegahan Korosi Pada Lambung Kapal

Keywords: Corrosion, Cathodic Protection, SACP, Corrosion Rate, Remaining Life

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.