Huge Diesel Engine Start Up 🔊 with English closed caption 

Mitsui E&S Machinery Tamano Works (Tamano City, Okayama Prefecture, Japan) manufactures main engines for container ships, tankers and other large marine vessels. This video contains the starting procedure and its sound of the 55,000 kW (75,000 PS) diesel engine for a mega container ship in shop test.
Video below shows the assembly process of the same type of engine. Please also watch here.
• 巨大舶用エンジンの造り方（タイムラプス/日本語）