Late to the news, but I don't think this has been posted here before:
Recently, a 5MW medium-voltage diesel generator for a project undertaken by China State Shipbuilding Corporation 704 successfully passed the factory quality review and delivered the unit. As the first domestic marine diesel generator in this field, it marks the 704th Institute’s equipment New breakthroughs were made in research and development work.
The image below is from an academic article, which I believe talks specifically about this generator. It states that the output is 5MW at a rated speed of 1066 rpm. The dimensions are around 11000 mm × 2800 mm x 3900 mm. It weighs <92 tons, with the diesel engine weighing 49.5 tons, the generator set around 23 tons, and other auxiliary equipment about 4 tons.