Produced by the Japan Marine Technology Foundation. This explains the outline of a steam turbine ship plant. Narration is available in Japanese and English, and a 22-page PDF text is also included. I held a Class 2 (Engineering) license, and when I took the Class 1 (Engineering) exam, I studied steam turbines for the first time. I couldn't understand it at all with just the text in self-study reference books and problem sets, and I failed to grasp the first part of the engineering section. However, after encountering this DVD, my understanding increased significantly, and it was also useful for the oral examination, allowing me to successfully obtain my license.