Author(s)

Pel Yuan Hang

Abstract

This paper presents an approach to design the impressed corrosion cathodic protection (ICCP) system integrating complicated ship hull and internal structures of waterjet using boundary element technology. Design optimiza- tion of anode numbers and locations is determined based on the detailed boundary element analysis and penalty method. Considering the changes of boundary conditions, the corrosion protection is evaluated while ship is travelling at different speeds and paint status. 1 Introduction Waterjet is often chosen for ships operating in waters with restricted depths as it presents a solution with minimum draught and protected propulsor. The basic components of a waterjet unit are illustrated in figure 1. They are the inlet, the pump unit consisting of shaft, impellers, water box and

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