The engines are two stroke diesels, and it must be assumed forced induction.
Here are some pictures and info, just click images Engine and Machinery
http://english.hhi.co.kr/Promotion/Gallery.asp
luisandregg wrote:What kind of machine is used to manufacture such propellers, man??manchild wrote:I've read about those new single-propeller tankers that can use their own engine only outside the ports since rotation of such huge propeller would create “tsunami” in port (diameter 9 m and weight between 90 and 100 t).
Here is the largest one I could find on the web http://www.hhiir.com/hiview.asp?ino=574&page=