Abstract
The need to improve underwater vehicles in the coming decades has arisen from their increase in numbers and the movement away from the fields of marine research to marine tourism. This study explores the causes of submarine incidents from 1900 to 2009, using the SPSS 17.0 program to distinguish and decompose patterns. The results show that the root causes of such setbacks are flooding and sinking, fire, and explosion. In fact, even the most advanced atomic submarines were plagued by the problem of defects and human error. Given the camouflage innovations created by submarines, governments should consider establishing international agreements with different countries, similar to flight identification zones but for submarines, to offset the imaginable potential impact. In addition, the preparation and training of all diving vehicle managers should be strengthened because human error is one of the main drivers of submarine setbacks. Therefore, avoiding such mistakes is the basis for successful endeavors. The survey results presented during this inspection can increase the safety of underwater traffic.