The fact that human factors contribute to accidents is generally accepted, but there is no consensus on the importance of this factor. Suggestions regarding the proportion of marine accidents caused by human errors vary from 50 to 90% of the total (Kletz, 1991). The main causes of accidents is shown in Figure 1 where first 60% of the total number of claims recorded that human error was the direct cause and further 30% human error is from indirect contributory cause.