本文研究了海水中钢浮筏的阴极保护。浮筏由船板钢制造,表面涂9道油漆。所用牺牲阳极为棒状悬挂式、远距离铝基牺牲阳极。试验得出该浮筏的平均保护电流密度为14mA/m~2。在本研究中,作者采用了一种测定定长导线电压降的方法测定阳极的电流输出。所测得的阳极电流输出值与由Dwight修正式计算的结果大体相当。 This paper studies the cathodic protection of steel floating rafts in seawater. Floating raft made of steel plate, the surface coated with 9 paint. Sacrificial anode used for the rod hanging, long distance aluminum-based sacrificial anode. The experimental results show that the average protection current density of the floating raft is 14mA / m ~ 2. In this study, the authors used a method of determining the voltage drop across a fixed length wire to measure the current output of the anode. The measured anode current output is roughly equivalent to the result calculated by Dwight’s correction.